Efecto de la Intervención Docente en la Percepción de Competencia y Motivación de Futuros Maestros de Primaria en Educación Física Utilizando la Evaluación Formativa y Compartida

The purpose of this study was to examine the perceived effect of a physical education teaching intervention by applying formative and shared assessment. The experiment was applied to 340 volunteers (239 women), divided into control (n = 206) and intervention (n = 134) groups. A test and a retest (after the trial) were conducted to assess perceived competence in assessment and motivation in physical education. The intervention was found to have a significant effect on motivation (p < 0.001), but not on perceived competence (p > 0.05). After the teaching period, an increase in the motivation of the intervention group and a decrease in the motivation of the control group were noted. We c…

Use of heart rate variability in monitoring stress and recovery in judo athletes

The main objective of this study was to examine the effect of different judo training loads on heart rate variability (HRV) measurements, to determine if they can be used as valid indicators in monitoring stress and recovery in judo athletes. Fourteen male national-standard judo athletes were randomly divided into 2 groups, and each group followed a different type of training, namely, a high training load (HTL) and a moderate training load program (MTL). Data collection included HRV measurements, a Recovery Stress Questionnaire for athletes (RESTQ-SPORT), and strength measurements, 4 weeks before and after the training program. The HTL group had lower square root of the mean squared differe…

The influence of regular physical activity on lung function in paraplegic people

Cross-sectional study. The main goal of this study was to examine the influence of regular physical activity (PA) on lung volumes and flows. The study was conducted in the Vall d’Hebron Hospital, Barcelona (Spain), and La Fe Hospital, Valencia (Spain). Spirometric tests were performed to 67 paraplegics, and differences were established between the active group (AG) (n=37) that performed >60 min per week of moderate-to-vigorous PA (MVPA) and 30 non-AG (NAG). Further, we established the relationship between the spirometric and PA variables and between being active and reaching the lower limit of normal (LLN) of the spirometric variables. AG had greater values than the NAG: FVC (P 0.05). The p…

Adolescents' postural control learning according to the frequency of knowledge of process

Feedback is one of the most influential factors for motor skills learning. Physical Education teachers commonly use verbal cues to provide knowledge of process (KP) when teaching motor skills, but the ideal presentation frequency for KP in adolescents is unclear. The aim of this study was to compare the effectiveness of the frequency of KP (i.e., 100%, 67%, 0%) on dynamic balance. Thirty adolescents, age 14–15 years, participated in the study. Performance on a stabilometer platform was used to assess dynamic balance. Participants received feedback after each trial (100%), in two out of three trials (67%), or no feedback during 12 30-s trials of practice. Adolescents who received feedback (6…

Differences in intermittent postural control between normal-weight and obese children.

Abstract Aim The main objective of this study was to determine differences in postural control between obese and non-obese children. Methods The study design was cross-sectional, prospective, between-subjects. Postural control variables were obtained from a group of obese children and a normal-weight control group under two different postural conditions: bipedal standing position with eyes open and bipedal standing with eyes closed. Variables were obtained for each balance condition using time domain and sway-density plot analysis of the center of pressure signals acquired by means of a force plate. Results Pairwise comparisons revealed significant differences between obese and normal-weigh…

Do Active Commuters Feel More Competent and Vital? A Self-Organizing Maps Analysis in University Students

University students represent a population that faces high risks regarding physical inactivity. Research suggests that a regular engagement in physical activity (PA) may be more likely established when it leads to the experience of subjective vitality. Subjective vitality, in turn, is more likely achieved through physical activities that individuals feel competent in, and that take place in natural outdoor environments. An activity that may fulfill these conditions is active commuting to and from university (ACU). To examine whether and in which form ACU can combine this promising pattern of aspects, a person-oriented analysis was conducted. The sample contained 484 university students (59.…

Evaluating the structure and use of hiking trails in recreational areas using a mixed GPS tracking and graph theory approach

Abstract Recreational trails encourage numerous outdoor leisure activities in a variety of urban, rural, and natural environments. Understanding the way trails function is crucial for the designers and managers of recreational sites to balance the needs of visitors and site capacities. This paper presents a new approach to evaluate the structure and use of hiking trails by combining GPS tracking and analytical methods based on graph theory. The study is based upon empirical data (N = 482 GPS tracks) collected in the Lobau, which is part of the Danube Floodplains National Park in Austria. The physical structure of trails (structural network; undirected graph) and their usage (functional netw…

Longitudinal changes in physical activity, sedentary behavior and body mass index in adolescence: Migrations towards different weight cluster

This study examined longitudinal changes in physical activity, sedentary behavior and body mass index in adolescents, specifically their migrations towards a different weight cluster. A cohort of 755 adolescents participated in a three-year study. A clustering Self-Organized Maps Analysis was performed to visualize changes in subjects' characteristics between the first and second assessment, and how adolescents were grouped. Also a classification tree was used to identify the behavioral characteristics of the groups that changed their weight cluster. Results indicated that boys were more active and less sedentary than girls. Boys were especially keen to technological-based activities while …

Screen media usage, sleep time and academic performance in adolescents: clustering a self-organizing maps analysis.

Screen media usage, sleep time and socio-demographic features are related to adolescents' academic performance, but interrelations are little explored. This paper describes these interrelations and behavioral profiles clustered in low and high academic performance. A nationally representative sample of 3,095 Spanish adolescents, aged 12 to 18, was surveyed on 15 variables linked to the purpose of the study. A Self-Organizing Maps analysis established non-linear interrelationships among these variables and identified behavior patterns in subsequent cluster analyses. Topological interrelationships established from the 15 emerging maps indicated that boys used more passive videogames and compu…

A lower-limb training program to improve balance in healthy elderly women using the T-Bow® Device

Ageing impairs balance, which increases the risk of falls. Fall-related injuries are a serious health problem associated with dependency and disability in the elderly and results in high costs to public health systems. This study aims to determine the effects of a training program to develop balance using a new device called the T-Bow (R). A total of 28 women > 65 years were randomly assigned to an experimental group (EG) (n = 18; 69.50 [0.99] years), or a control group (CG) (n = 10; 70.70 [2.18] years). A program for lower limbs was applied for 8 weeks using 5 exercises on the T-Bow (R): squat, lateral and frontal swings, lunges, and plantarflexions. The intensity of the exercises was cont…

Visual tasks and stance width influence the spatial magnitude and temporal dynamics of standing body sway in 6- to 12-year old children.

Relationship between body composition and vertical ground reaction forces in obese children when walking.

Abstract Background Obesity is now a serious worldwide challenge, especially in children. This condition can cause a number of different health problems, including musculoskeletal disorders, some of which are due to mechanical stress caused by excess body weight. The aim of this study was to determine the association between body composition and the vertical ground reaction force produced during walking in obese children. Methods Sixteen children participated in the study, six females and ten males [11.5 (1.2) years old, 69.8 (15.5) kg, 1.56 (0.09) m, and 28.36 (3.74) kg/m 2 of body mass index (BMI)]. Total weight, lean mass and fat mass were measured by dual-energy X-ray absorptiometry and…

Competing Effects Between Screen Media Time and Physical Activity in Adolescent Girls: Clustering a Self-Organizing Maps Analysis.

Background:Previous research shows contradictory findings on potential competing effects between sedentary screen media usage (SMU) and physical activity (PA). This study examined these effects on adolescent girls via self-organizing maps analysis focusing on 3 target profiles.Methods:A sample of 1,516 girls aged 12 to 18 years self-reported daily time engagement in PA (moderate and vigorous intensity) and in screen media activities (TV/video/DVD, computer, and videogames), separately and combined.Results:Topological interrelationships from the 13 emerging maps indicated a moderate competing effect between physically active and sedentary SMU patterns. Higher SES and overweight status were l…

Working Memory Task Influence in Postural Stability and Cognitive Function in Adolescents.

This paper describes a study on postural stability and cognitive function according to the difficulty increment of a working memory task (WMT) and age group in adolescents. One hundred and twenty-three participants (13–16 years) performed single and dual tasks in a bipedal standing position while barefoot. Four trials were conducted, consisting of single and dual tasks in three progressively difficult WMT conditions (i.e., 3-, 5-, and 7-digit sequences). Friedman’s analysis of variance and Kruskal–Wallis tests were conducted to test the effect of the WMT and age group, respectively. Both the WMT and age were found to affect performance (p < .01). As the cognitive requirements increased, the…

Impact of Visual Biofeedback of Trunk Sway Smoothness on Motor Learning during Unipedal Stance.

The assessment of trunk sway smoothness using an accelerometer sensor embedded in a smartphone could be a biomarker for tracking motor learning. This study aimed to determine the reliability of trunk sway smoothness and the effect of visual biofeedback of sway smoothness on motor learning in healthy people during unipedal stance training using an iPhone 5 measurement system. In the first experiment, trunk sway smoothness in the reliability group (n = 11) was assessed on two days, separated by one week. In the second, the biofeedback group (n = 12) and no-biofeedback group (n = 12) were compared during 7 days of unipedal stance test training and one more day of retention (without biofeedback…

Effect of Concurrent Visual Feedback Frequency on Postural Control Learning in Adolescents.

The purpose was to find better augmented visual feedback frequency (100% or 67%) for learning a balance task in adolescents. Thirty subjects were divided randomly into a control group, and 100% and 67% feedback groups. The three groups performed pretest (3 trials), practice (12 trials), posttest (3 trials) and retention (3 trials, 24 hours later). The reduced feedback group showed lower RMS in the posttest than in the pretest (p = 0.04). The control and reduced feedback groups showed significant lower median frequency in the posttest than in the pretest (p < 0.05). Both feedback groups showed lower values in retention than in the pretest (p < 0.05). Even when the effect of feedback frequenc…

Different neighborhood walkability indexes for active commuting to school are necessary for urban and rural children and adolescents

This work was supported by the Spanish Ministry of Economy, Industry and Competitiveness and the European Regional Development Fund [grant no. DEP2016-75598-R, MINECO/FEDER, UE]. Additionally, this study takes place thanks to the funding from the University of Granada Plan Propio de Investigacion 2016 -Excellence actions: Unit of Excellence on Exercise and Health (UCEES) -and the Junta de Andalucia, Consejeria de Conocimiento, Investigacion y Universidades, European Regional Development Fund [grant no. SOMM17/6107/UGR]. The funding body had no role in the study design or collection, analysis, or interpretation of the data or in writing the manuscript.

Relationship between body composition and postural control in prepubertal overweight/obese children: A cross-sectional study

Abstract Background Excess body weight during childhood causes reduced motor functionality and problems in postural control, a negative influence which has been reported in the literature. Nevertheless, no information regarding the effect of body composition on the postural control of overweight and obese children is available. The objective of this study was therefore to establish these relationships. Methods A cross-sectional design was used to establish relationships between body composition and postural control variables obtained in bipedal eyes-open and eyes-closed conditions in twenty-two children. Centre of pressure signals were analysed in the temporal and frequency domains. Pearson…

Resilience Patterns

Resilience, or the capacity to be able to develop oneself successfully despite adverse circumstances, has become a concept of interest in recent years. There is a clear relationship between resilience, psychological well-being, and coping strategies. This study looked at 890 subjects with a mean age of 46.77 ( SD = 20.86) years, ranging from 18 and 95 years old. The participants were 40.6% men and 59.4% women. Using this sample, three clusters were developed by MATLAB R2010a and the Self-Organizing Maps toolbox. Two of these had high resilience, and the other one had low resilience; the psychological well-being variables and coping strategies were taken into account. Thereafter, multivaria…

Effects of dual task difficulty in motor and cognitive performance: Differences between adults and adolescents

In the present study our aim was to compare dual-task performance in thirteen adolescents and fifteen young adults while concurrently performing a cognitive and a motor task. The postural control variables were obtained under three different conditions: i) bipedal stance, ii) tandem stance and iii) unipedal stance. The cognitive task consisted of a backward digit span test in which the participants were asked to memorize a sequence of numbers and then repeat the number in reverse order at three different difficulty levels (i.e. with 3, 4 and 5 digits). The difficulty of the cognitive task was seen to have different effects on adolescents and young adults. Adolescents seem to prioritize post…

Gender differences in bicycle sharing system usage in the city of Valencia

Abstract Bicycle sharing systems (BSS) in cities are an environmentally friendly alternative to fossil-fuel-based transport. Among the different factors that influence its use, the scientific literature points out that there are gender differences in the frequency of trips made. The present study analysed the movements of men and women who use the BSS in the city of Valencia during weekdays. Our database contained a total of 5,300,328 trips by users over a period of 4 years. Ridership networks were constructed through user's trips (arcs) between the bicycle exchange stations (nodes). Different parameters of centrality and density of the generated networks were calculated, and the Voronoi sp…

Effects of A Dual-Task Intervention in Postural Control and Cognitive Performance in Adolescents.

The aim was to assess dual- versus single-task training for motor performance and cognitive performance in adolescents. Two experiments were performed. In the first, 30 adolescents were randomized to three groups to determine the effect of dual-task difficulty on postural control: α-scaling and root mean square (RMS). In the second, 20 adolescents were randomized to two groups to determine the effect of dual-task practice to improve working memory. RMS in the post-test was lower than the pre-test in both dual-task groups, while α-scaling was lower in post-test than pre-test only in the high-difficulty dual-task group. A practice effect was observed on the percentage of correct answers only …

Metodología para la estimación del gasto energético en lesionados medulares mediante el empleo de acelerómetros

Los objetivos de la tesis fueron diseñar modelos lineales generales y redes neuronales artificiales para estimar el gasto energético de personas con paraplejia. Para ello se realizó un estuio descriptivo transversal en el que 20 personas con paraplejia realizaron una rutina de 10 actividades. Cada actividad tuvo una duración de 10 minutos y durante la realización de la misma se adquirieron datos de frecuencia cardiaca, consumo de oxínego y aceleraciones. Concretamente se colocaron 4 acelerómetros triaxiales, uno en cada muñeca, otro en el pecho y el último en la cintura. Una vez procesadas las señales y extraídas las características de interés se diseñaron los modelos matemáticos de estimac…

Rate of concurrent augmented auditory feedback in postural control learning in adolescents

Introduction: The main objective of this study was to determine the rate of auditory concurrent feedback that best enhanced the learning of a continuous postural task in adolescents. Material and methods: A sample of thirty adolescents (13 to 14-years old) was used, who were assigned to three groups: i) control group (CG); ii) 100% auditory feedback group and iii) 67% auditory feedback group. The subjects performed a pre-test, practice, post-test and a retention (24 hours after the practice). In the postural control task subjects were instructed to remain on a seesaw (unstable in anteroposterior position) and keeping it as level as possible. Results: The results demonstrated that concurrent…

Identifying profiles of children at risk of being less physically active: an exploratory study using a self-organised map approach for motor competence

This study aims to develop profiles in children according to physical fitness, actual and perceived motor competence, and to examine the level of engagement in physical activity and weight status according to these profiles. In the study, 156 typically developing Spanish children (47.4% girls) of primary school age (5-11 years-old) participated voluntarily. Children's perceived and actual motor competence, physical fitness, physical activity participation and weight status were assessed. A Self-Organising Map and K-means cluster analysis were used to classify and visualise the values. Four profiles were found: profile 2 was aligned - high capacity, high perception, profile 1 was partially a…

The Relevance of Dual Tasking for Improving Trunk Muscle Endurance After Back Surgery

Abstract Objective To determine the effect of dual tasking on trunk muscle endurance in patients after lumbar diskectomy. Design Cross-sectional study. Setting Rehabilitation hospital setting. Participants Individuals (N=14) undergoing primary lumbar diskectomy. Intervention Using a randomized design on 2 separate days, muscle endurance was evaluated during prone bridging and Biering-Sorensen tests. Each test was randomly performed under 2 cognitive conditions: single task without cognitive condition and self-regulated dual task (ie, mathematical task). Main Outcome Measures The primary outcomes were time to failure and pain assessed by the visual analog scale from 0 to 100 mm. The secondar…

Deadlift muscle force and activation under stable and unstable conditions.

The objective of this study was to compare the production of force and paraspinal muscle activity between deadlifts carried out in a standard way and with different instability devices (Bosu and T-Bow). Deadlifts involve the performance of muscle activities with dynamic and isometric characteristics. Thirty-one subjects participated voluntarily in the study. Initially, they performed an isometric test for 5 seconds in each condition. After that, they performed a set of 5 repetitions with 70% of the maximum isometric force obtained in each one of the previously evaluated conditions. During the isometric tests, records of electromyographic activity and force production were obtained, whereas …

Motivation to Physical Exercise in Manual Wheelchair Users With Paraplegia

Background: Motivation could be considered as a critical factor for being and staying physically active in the spinal cord–injured population. Objectives: Our goals were (1) to describe motivation to exercise in people with paraplegia, comparing those who engage in regular physical exercise with those who do not and (2) to establish whether such motivation is related to the type of physical exercise practiced. Methods: This study was quantitative, cross-sectional descriptive research. One-hundred and six participants with chronic paraplegia completed the Spanish version of the Exercise Motivations Inventory (EMI-2). Participants were divided into the non-exerciser group (NEG) and the exerc…

Influencia del tipo de feedback utilizado en el aprendizaje de una tarea motriz de equilibrio (Influence of the type of feedback on balance motor tasks learning)

El feedback que aportan los docentes de Educación Física puede favorecer el aprendizaje de los estudiantes en tareas motrices. La importancia de conocer la influencia del tipo de feedback a utilizar parece clave para programar con éxito las tareas a realizar. Sin embargo, actualmente la literatura existente no es capaz de advertir qué tipo de feedback es el más efectivo para el aprendizaje de una tarea motriz en adolescentes. El objetivo del presente estudio fue analizar la influencia de tres tipos de feedback terminal-verbal: i) sobre el resultado, ii) sobre el procedimiento o iii) sobre ambos (procedimiento-resultado) en el aprendizaje de una tarea motriz. La muestra estuvo compuesta por …

The Impact of COVID-19 on Sport in Twitter: A Quantitative and Qualitative Content Analysis

The spread of the SARS-CoV-2 virus has transformed many aspects of people’s daily life, including sports. Social networks have been flooded on these issues. The present study aims to analyze the tweets produced relating to sports and COVID-19. From the end of January to the beginning of May 2020, over 4,000,000 tweets on this subject were downloaded through the Twitter search API. Once the duplicates, replicas, and retweets were removed, 119,253 original tweets were analyzed. A quantitative–qualitative content analysis was used to study the selected tweets. Posts dynamics regarding sport and exercise evolved according to the COVID-19 pandemic and subsequent lockdown, shifting from consideri…

The influence of wearing ski-boots with different rigidity characteristics on postural control

External supports that reduce ankle joint mobility such as ski-boots can impair postural control of healthy participants. Although this disruptive effect has been attributed to the rigidity of the external supports, the results remained controversial and no study has been conducted in order to evaluate the influence of ski-boots rigidity. Hence, the question about the influence of ankle support rigidity on postural control remains open. This study was therefore undertaken in order to investigate the effect of ski-boots rigidity on postural control. Ten healthy active participants were recruited. The wearing of soft and rigid ski-boots was compared to barefoot while standing on a seesaw gene…

Profiling movement behaviours in pre-school children: A self-organised map approach.

Application of machine learning techniques has the potential to yield unseen insights into movement and permits visualisation of complex behaviours and tangible profiles. The aim of this study was to identify profiles of relative motor competence (MC) and movement behaviours in pre-school children using novel analytics. One-hundred and twenty-five children (4.3 ± 0.5y, 1.04 ± 0.05 m, 17.8 ± 3.2 kg, BMI: 16.2 ± 1.9 kg

Test-Retest Reliability of Task Performance for Golf Swings of Medium- to High-Handicap Players

Background: Golf swing performance in medium- to high-handicap players must be reliably measured to use this variable in both research studies and in applied settings. Nevertheless, there are no studies published on this topic and test–retest evidence is only available for low-handicap players. The aim of this study was to determine the number of attempts necessary to obtain a reliable measurement protocol for swing performance variables in medium- to high-handicap players. Methods: Ten amateur players (55.67 (13.64) years, 78.4 (11.4) kg, 1.75 (7.95) m) took part in a test–retest study in two experimental sessions one week apart. In each one, fifteen swings with a six iron and a driver wer…

Postural Control Mechanisms in Healthy Adults in Sitting and Standing Positions

This study explored differences in the center of pressure in healthy people in a sitting and standing position and with eyes open and closed. With this purpose, 32 healthy participants (16 men, 16 women; M age = 25.2 yr., SD = 10.0, range = 18–55) were measured with an extensiometric force plate. Using a two–way repeated-measures multivariate analysis of variance (MANOVA), the root mean square, velocity, range, and sway, in both visual conditions, had higher values in the standing task than in the sitting task. In the frequency domain, the low-frequency band had higher values during the standing task. For control mechanism variables, mean distance and time were greater when standing while …

Relationship between the practice of physical activity and quality of movement in adolescents: a screening tool using self-organizing maps.

The aim of this study was to determine whether the most physically active adolescents have better lower limb control.31 high school students (12 males and 19 females) participated in this study. The Anterior Knee Pain Scale was used to find any cases of knee pain. Only subjects with high scores were selected, to exclude those with knee pain or lower limb injuries. Single Leg Squat and Tuck Jump Assessment were used to evaluate movements with two cameras in a two-dimensional assessment. The IPAQ Questionnaire was used to score the physical activity and to classify it into MET total, MET moderate activity, MET vigorous activity and MET walking. These scores were related to knee angle at landi…

Accelerometer assessment of physical activity in individuals with paraplegia who do and do not participate in physical exercise

OBJECTIVE: Our main goal was to measure physical activity (PA) in people with paraplegia. Secondarily, we aimed to establish the relationship between being engaged in physical exercise (PE) and reaching the recommended moderate-to-vigorous physical activity (MVPA) level. We further analyzed the effect of being engaged in PE on the PA levels. DESIGN: Descriptive cross-sectional. SETTING: Spanish associations for individuals with spinal cord injury. PARTICIPANTS: Ninety-six manual wheelchair users with chronic paraplegia. INTERVENTIONS: Participants wore a wrist accelerometer for one week. OUTCOME MEASURES: Levels of PA and sedentary behavior. In addition, participants were classified into tw…

Relation between physical activity and academic performance in 3rd-year secondary education students

The main aim of this study was to analyze the relationship between the amount of physical activity and academic performance in 3rd-year secondary education students. The sample was taken from three secondary schools in the area of Barcelona. 284 students (158 girls, 126 boys) with an average age of 14.7 yr. participated. The International Physical Activity Questionnaire was used by students to self-report their amount of physical activity. Students’ academic records were obtained for comparisons. Results showed that there was a linear relationship between academic performance and physical activity; nevertheless, there was a trend to stronger correlation when modeling the relationship betwee…

Multifactorial combinations predicting active vs inactive stages of change for physical activity in adolescents considering built environment and psychosocial factors: A classification tree approach.

Myoelectric Activation and Kinetics of Different Plyometric Push-Up Exercises

The kinetic and myoelectric differences between 3 types of plyometric push-ups were investigated. Twenty-seven healthy, physically active men served as subjects and completed both familiarization and testing sessions. During these sessions, subjects performed 2 series of 3 plyometric push-up variations in a counterbalanced order according to the following techniques: Countermovement push-ups (CPUs) were push-ups performed with the maximum speed of movement; jump push-ups (JPUs) were similar to clapping push-ups; and fall push-ups (FPUs) required kneeling subjects to drop and then attempt to return to their initial position. Vertical ground reaction forces were determined by using a force pl…

Validation of the use of Actigraph GT3X accelerometers to estimate energy expenditure in full time manual wheelchair users with spinal cord injury.

Study design: Cross-sectional validation study. Objectives: The goals of this study were to validate the use of accelerometers by means of multiple linear models (MLMs) to estimate the O2 consumption (VO2) in paraplegic persons and to determine the best placement for accelerometers on the human body. Setting: Non-hospitalized paraplegics’ community. Methods: Twenty participants (age=40.03 years, weight=75.8 kg and height=1.76 m) completed sedentary, propulsion and housework activities for 10 min each. A portable gas analyzer was used to record VO2. Additionally, four accelerometers (placed on the non-dominant chest, non-dominant waist and both wrists) were used to collect second-by-second a…

Postural Control Profiles of Typically Developing Children From 6 to 12 Years old: An Approach Using Self-Organizing Maps

The purposes of the present study were a) to establish postural control profiles for individuals 6–12 years of age, b) to analyze the participants’ characteristics (age, sex, weight, height, and physical activity) in those profiles, and c) to analyze the influence of visual information in the profiles found. Two hundred and eight typically developing children aged 6–12 years performed two trials in bipedal standing position with eyes open and closed. Feature extraction involved time, frequency, and sway-density plot variables using signals from the center of pressure. A Self-Organizing Map was used to classify and visualize the values of the participants in all the postural control variable…

Obesity Affects Postural Control in Middle Childhood and Adolescence but not in Early Childhood

Introduction:Overweight/obese children have postural control differences compared with normal-weight children. Nevertheless, there are not studies that analyze the effect of obesity during the entire period comprised between childhood and adolescence. The objective of this study was to determine the differences in postural control between normal-weight and overweight/obese participants during early and middle childhood and adolescence.Methods:359 children were divided into six groups according to age and weight status. Each participant carried out one 30-s trial with eyes open (EO) and one 30-s trial with eyes closed (EC). Center of pressure signals were acquired using a Wii Balance Board. …

Children’s Single-Leg Landing Movement Capability Analysis According to the Type of Sport Practiced

(1) Background: Understanding children&rsquo

Fatigue does not conjointly alter postural and cognitive performance when standing in a shooting position under dual-task conditions

ABSTRACTThis study investigated the effects of fatigue on balance control and cognitive performance in a standing shooting position. Nineteen soldiers were asked to stand while holding a rifle (single task – ST). They also had to perform this postural task while simultaneously completing a cognitive task (dual task – DT). Both the ST and DT were performed in pre- and post-fatigue conditions. In pre-fatigue, participants achieved better balance control in the DT than in the ST, thus suggesting that the increased cognitive activity associated with the DT improves balance control by shifting the attentional focus away from a highly automatised activity. In post-fatigue, balance control was deg…

Technique and safety aspects of resistance exercises: a systematic review of the literature.

A systematic review of the scientific literature was conducted to identify the optimal ranges of motion for preventing injury in the main joints of the body during resistance exercise performance. These ranges of motion are independent of the type in which the resistance exercises could be applied (ie, adults, elderly, athletes, recreational exercisers), and the regions examined include the shoulder, spine, and knee, which are injured most often. It can be concluded that during the performance of any resistance exercise, it is possible to put anatomical structures at risk with certain body positions; therefore, it is necessary to understand these movements so injury can be avoided.

Reliability of a new analysis to compute time to stabilization following a single leg drop jump landing in children.

Although a number of different methods have been proposed to assess the time to stabilization (TTS), none is reliable in every axis and no tests of this type have been carried out on children. The purpose of this study was thus to develop a new computational method to obtain TTS using a time-scale (frequency) approach [i.e. continuous wavelet transformation (WAV)] in children. Thirty normally-developed children (mean age 10.16 years, SD = 1.52) participated in the study. Every participant performed 30 single-leg drop jump landings with the dominant lower limb (barefoot) on a force plate from three different heights (15cm, 20cm and 25cm). Five signals were used to compute the TTS: i) Raw, ii…

Ski Boots Do Not Impair Standing Balance by Restricting Ankle-Joint Mobility.

Objective: This study was undertaken in order to provide new insight into sensorimotor control of posture when wearing high-shaft (HS) boots as ski boots. Background: Previous studies into the effects of HS boots on postural control have produced controversial results. Some studies reported postural control impairments with ski boots in bipedal postural tasks due to ankle movement restrictions without quantifying the actual restrictive effect of these boots and specifying the adaptations of the postural control system. Method: Eighteen young healthy subjects took part in the experiment. Bilateral postural control was assessed on stable and unstable surfaces, while standing barefoot or weari…

Validation of Using Smartphone Built-In Accelerometers to Estimate the Active Energy Expenditures of Full-Time Manual Wheelchair Users with Spinal Cord Injury

[EN] This study aimed to investigate the validity of using built-in smartphone accelerometers to estimate the active energy expenditures of full-time manual wheelchair users with spinal cord injury (SCI). Twenty participants with complete SCI completed 10 5-min daily activities that involved the upper limbs, during which their oxygen consumption and upper limb activity were registered using a portable gas analyzer and a smartphone (placed on the non-dominant arm), respectively. Time series of 1-min averaged oxygen consumption and 55 accelerometer variables (13 variables for each of the four axes and three additional variables for the correlations between axes) were used to estimate three mu…

Built Environment, Psychosocial Factors and Active Commuting to School in Adolescents: Clustering a Self-Organizing Map Analysis

Although the built environment and certain psychosocial factors are related to adolescents&rsquo

Assessment of haemophilic arthropathy through balance analysis: a promising tool

[EN] The purpose of this study was to develop a tool able to distinguish between subjects who have haemophilic arthropathy in lower limbs and those who do not by analyzing the centre of pressure displacement. The second objective was to assess the possible different responses of haemophiliacs and healthy subjects by creating a classifier that could distinguish between both groups. Fiftyfour haemophilic patients (28 with and 26 without arthropathy) and 23 healthy subjects took part voluntarily in the study. A force plate was used to measure postural stability. A total of 276 centre of pressure displacement parameters were calculated under different conditions: unipedal/bipedal balance with e…

An author keyword analysis for mapping Sport Sciences

[EN] Scientific production has increased exponentially in recent years. It is necessary to find methodological strategies for understanding holistic or macro views of the major research trends developed in specific fields. Data mining is a useful technique to address this task. In particular, our study presents a global analysis of the information generated during last decades in the Sport Sciences Category (SSC) included in the Web of Science database. An analysis of the frequency of appearance and the dynamics of the Author Keywords (AKs) has been made for the last thirty years. Likewise, the network of co-occurrences established between words and the survival time of new words that have …

Introduccion II - Análisis de varianza factorial medidas repetidas (ANOVA)

Segundo vídeo de una serie de cinco, donde se muestra la ejecución del análisis de varianza con el programa estadístico SPSS para comprobar diferencia de medias entre k condiciones, en el área de las ciencias de la salud;

Introducción II. ANOVA de un factor de medidas repetidas (Parte 3/6)

Tercer vídeo de la serie de seis que describen el análisis de varianza para estudios con un único factor en el que comprueban las diferencias de medias de diferentes condiciones o momentos de tiempo, utilizando el programa SPSS, en el área de las ciencias de la salud.

Análisis de varianza de un factor (ANOVA) Parte 2/5

Segundo vídeo de la serie de cinco que describe el método del análisis de varianza con el programa estadístico SPSS para comprobar diferencia de medias entre k grupos, en el área de las ciencias de la salud.Producción:SFPIE (www.uv.es/sfpie)-VLC Campus

Introducción I. ANOVA de un factor de medidas repetidas (Parte 2/6)

Segundo vídeo de la serie de seis que describen el análisis de varianza para estudios con un único factor en el que comprueban las diferencias de medias de diferentes condiciones o momentos de tiempo, utilizando el programa SPSS, en el área de las ciencias de la salud.

Ejecución - Análisis de varianza factorial diseño mixto (ANOVA) (2/5)

Segundo vídeo de una serie de cinco, donde se muestra la ejecución del análisis de varianza con el programa estadístico SPSS para comprobar diferencia de medias entre k condiciones, teniendo factores intra y entre sujetos, en el área de las ciencias de la salud;

Resultados - Análisis de varianza factorial medidas repetidas (ANOVA)

cuarto vídeo de una serie de cinco, donde se muestra la ejecución del análisis de varianza con el programa estadístico SPSS para comprobar diferencia de medias entre k condiciones, en el área de las ciencias de la salud;

Análisis de varianza de un factor (ANOVA) Parte 1/5

Primer vídeo de la serie de cinco que describe el método del análisis de varianza con el programa estadístico SPSS para comprobar diferencia de medias entre k grupos, en el área de las ciencias de la salud.Producción:SFPIE (www.uv.es/sfpie)-VLC Campus

Introducción I - Anova Factorial Entre Sujetos

Segundo vídeo de una serie de seis, donde se muestra la ejecución del análisis de varianza con el programa estadístico SPSS para comprobar diferencia de medias entre k grupos, en el área de las ciencias de la salud;

Escritura de los Resultados. ANOVA de un factor de medidas repetidas (Parte 6/6)

Sexto y último vídeo de la serie de seis que describen el análisis de varianza para estudios con un único factor en el que comprueban las diferencias de medias de diferentes condiciones o momentos de tiempo, utilizando el programa SPSS, en el área de las ciencias de la salud.

Análisis de varianza de un factor (ANOVA) Parte 4/5

Cuarto vídeo de la serie de cinco que describe el método del análisis de varianza con el programa estadístico SPSS para comprobar diferencia de medias entre k grupos, en el área de las ciencias de la salud.Producción:SFPIE (www.uv.es/sfpie)-VLC Campus

Resultados - Anova Factorial Entre Sujetos

Quinto vídeo de una serie de seis, donde se muestra la ejecución del análisis de varianza con el programa estadístico SPSS para comprobar diferencia de medias entre k grupos, en el área de las ciencias de la salud;

Introducción - Análisis de varianza factorial diseño mixto (ANOVA) (1/5)

Primer vídeo de una serie de cinco, donde se muestra la ejecución del análisis de varianza con el programa estadístico SPSS para comprobar diferencia de medias entre k condiciones, teniendo factores intra y entre sujetos, en el área de las ciencias de la salud;

Resultados. ANOVA de un factor de medidas repetidas (Parte 5/6)

Quinto vídeo de la serie de seis que describen el análisis de varianza para estudios con un único factor en el que comprueban las diferencias de medias de diferentes condiciones o momentos de tiempo, utilizando el programa SPSS, en el área de las ciencias de la salud.

Escritura de resultados - Anova Factorial Entre Sujetos

Sexto vídeo de una serie de seis, donde se muestra la ejecución del análisis de varianza con el programa estadístico SPSS para comprobar diferencia de medias entre k grupos, en el área de las ciencias de la salud;

Ejecucion de la prueba - Análisis de varianza factorial medidas repetidas (ANOVA)

Tercer vídeo de una serie de cinco, donde se muestra la ejecución del análisis de varianza con el programa estadístico SPSS para comprobar diferencia de medias entre k condiciones, en el área de las ciencias de la salud;

Análisis de varianza de un factor (ANOVA) Parte 3/5

Tercer vídeo de la serie de cinco que describe el método del análisis de varianza con el programa estadístico SPSS para comprobar diferencia de medias entre k grupos, en el área de las ciencias de la salud.Producción:SFPIE (www.uv.es/sfpie)-VLC Campus

Ejecución - Análisis de Varianza Mutivariado MANOVA parte 2/3

Primer vídeo de la serie de seis que describen el análisis de varianza para estudios con un único factor en el que comprueban las diferencias de medias de diferentes condiciones o momentos de tiempo, utilizando el programa SPSS, en el área de las ciencias de la salud.

Resultados - Análisis de Varianza Mutivariado MANOVA parte 3/3

el MANOVA es una técnica que podemos aplicar cuando tenemos uno o varios factores que dividen nuestros datos en tres o más grupos y además tenemos dos o más variables dependientes.

Resultados I - Análisis de varianza factorial diseño mixto (ANOVA) (3/5)

Tercer vídeo de una serie de cinco, donde se muestra la ejecución del análisis de varianza con el programa estadístico SPSS para comprobar diferencia de medias entre k condiciones, teniendo factores intra y entre sujetos, en el área de las ciencias de la salud;

Introducción - Análisis de Varianza Mutivariado MANOVA parte 1/3

el MANOVA es una técnica que podemos aplicar cuando tenemos uno o varios factores que dividen nuestros datos en tres o más grupos y además tenemos dos o más variables dependientes.

Introducción I - Regresión lineal simple y múltiple (parte 1 de 5)

Primer video de una serie de cinco, donde se muestra cómo la regresión lineal es utilizada para obtener un modelo de estimación de una variable objetivo a través de una o varias variables predictoras;

Ejecucion de la prueba - Anova Factorial Entre Sujetos

Cuarto vídeo de una serie de seis, donde se muestra la ejecución del análisis de varianza con el programa estadístico SPSS para comprobar diferencia de medias entre k grupos, en el área de las ciencias de la salud;

Resultados II - Análisis de varianza factorial diseño mixto (ANOVA) (4/5)

Cuarto vídeo de una serie de cinco, donde se muestra la ejecución del análisis de varianza con el programa estadístico SPSS para comprobar diferencia de medias entre k condiciones, teniendo factores intra y entre sujetos, en el área de las ciencias de la salud;

Presentación. ANOVA de un factor de medidas repetidas (Parte 1/6)

Primer vídeo de la serie de seis que describen el análisis de varianza para estudios con un único factor en el que comprueban las diferencias de medias de diferentes condiciones o momentos de tiempo, utilizando el programa SPSS, en el área de las ciencias de la salud.

Escritura de los resultados - Regresión lineal simple y múltiple (parte 5 de 5)

Último vídeo de una serie de cinco, donde se muestra cómo la regresión lineal es utilizada para obtener un modelo de estimación de una variable objetivo a través de una o varias variables predictoras;

Ejecución I - Regresión lineal simple y múltiple (parte 3 de 5)

Tercer vídeo de una serie de cinco, donde se muestra cómo la regresión lineal es utilizada para obtener un modelo de estimación de una variable objetivo a través de una o varias variables predictoras;

Ejecución prueba. ANOVA de un factor de medidas repetidas (Parte 4/6)

Cuarto vídeo de la serie de seis que describen el análisis de varianza para estudios con un único factor en el que comprueban las diferencias de medias de diferentes condiciones o momentos de tiempo, utilizando el programa SPSS, en el área de las ciencias de la salud.

Pruebas T de Student

Ejecución de las pruebas T de Student con el programa estadístico SPSS en el área de las Ciencias de la Salud.Producción:SFPIE (www.uv.es/sfpie)-VLC Campus

Ejecución II - Regresión lineal simple y múltiple (parte 4 de 5)

Cuarto vídeo de una serie de cinco, donde se muestra cómo la regresión lineal es utilizada para obtener un modelo de estimación de una variable objetivo a través de una o varias variables predictoras;

Presentación - Anova Factorial Entre Sujetos

Primer vídeo de una serie de seis, donde se muestra la ejecución del análisis de varianza con el programa estadístico SPSS para comprobar diferencia de medias entre k grupos, en el área de las ciencias de la salud;

Introducción II - Correlación lineal simple

Segundo vídeo de una serie de cuatro, donde se muestra el uso de la herramienta estadística para determinar si existe relación entre variables cuantitativas;

Análisis de varianza de un factor (ANOVA) Parte 5/5

Quinto vídeo de la serie de cinco que describe el método del análisis de varianza con el programa estadístico SPSS para comprobar diferencia de medias entre k grupos, en el área de las ciencias de la salud.Producción:SFPIE (www.uv.es/sfpie)-VLC Campus

Introducción I - Análisis de varianza factorial medidas repetidas (ANOVA)

Primer vídeo de una serie de cinco, donde se muestra la ejecución del análisis de varianza con el programa estadístico SPSS para comprobar diferencia de medias entre k condiciones, en el área de las ciencias de la salud;

Introducción II - Regresión lineal simple y múltiple (parte 2 de 5)

Segundo Video de una serie de cinco donde se muestra cómo la regresión lineal es utilizada para obtener un modelo de estimación de una variable objetivo a través de una o varias variables predictoras;

Introducción de datos

Se presentan los procedimientos para la introducción de datos en el programa SPSS v19.0

Ejecución de la prueba - Correlación lineal simple

Tercer vídeo de una serie de cuatro, donde se muestra el uso de la herramienta estadística para determinar si existe relación entre variables cuantitativas;

Escritura Resultados - Análisis de varianza factorial diseño mixto (ANOVA) (5/5)

Último vídeo de una serie de cinco, donde se muestra la ejecución del análisis de varianza con el programa estadístico SPSS para comprobar diferencia de medias entre k condiciones, teniendo factores intra y entre sujetos, en el área de las ciencias de la salud;

Escritura Resultados - Análisis de varianza factorial medidas repetidas (ANOVA)

Último vídeo de una serie de cinco, donde se muestra la ejecución del análisis de varianza con el programa estadístico SPSS para comprobar diferencia de medias entre k condiciones, en el área de las ciencias de la salud;

Escritura Resultados - Correlación lineal simple

Último vídeo de una serie de cuatro, donde se muestra el uso de la herramienta estadística para determinar si existe relación entre variables cuantitativas;

Transformar variables en el programa SPSS v19.0

Se presentan los procedimientos para transformar variables en el programa SPSS v19.0

Importar y exportar datos

Se presentan los procedimientos para importar y exportar datos en el programa SPSS v19.0

Introducción I - Correlación lineal simple

Primer vídeo de una serie de cuatro, donde se muestra el uso de la herramienta estadística para determinar si existe relación entre variables cuantitativas;

Introducción II - Anova Factorial Entre Sujetos

Tercer vídeo de una serie de seis, donde se muestra la ejecución del análisis de varianza con el programa estadístico SPSS para comprobar diferencia de medias entre k grupos, en el área de las ciencias de la salud;