Search results for "sport science"
showing 10 items of 1573 documents
The use of accelerometry to evaluate the BMX cycling starting hill. Effect of the Q-Ring™ on the acceleration profile
2020
Accelerometers are becoming popular in sport performance, as they are easy to wear, affordable, and usable in the field. Eccentric chainrings have been commercialised to improve pedalling performance, but little is known about their possible effects in the first pedal strokes (PS) of maximal sprint starts. To analyse the effects of the Q-Ring chainring (Q) on pedalling mechanics and performance in the BMX starting hill, 12 Spanish-National-Team BMX athletes performed 3 maximal sprints comparing Q vs No-Q. Time was measured in the first three meters. Acceleration output was registered with a triaxial 6 g accelerometer (200 Hz) in the first four PS. Discrete time, acceleration and statistical…
2020
A soldier’s occupational physical task requirements are diverse and varied. However, the type of physical training that most effectively improves soldiers’ occupational task requirements has not been studied previously. The purpose of this study was to determine the important strength characteristics for soldiers during a repeated simulated military task course, and the type of training that may be effective to improve these abilities during a specialized military training period. Forty-two (n = 42) soldiers participated in the study. They were divided into three training groups; a soldier task-specific training group (TSG, n = 17), a strength training group (STG, n = 15), and a control gro…
2020
Limited data are available regarding strength and endurance training adaptations to occupational physical performance during deployment. This study assessed acute training-induced changes in neuromuscular (electromyography; EMG) and metabolic (blood lactate, BLa) responses during a high-intensity military simulation test (MST), performed in the beginning (PRE) and at the end (POST) of a six-month crisis-management operation. MST time shortened (145 ± 21 vs. 129 ± 16 s, −10 ± 7%, p < 0.001) during the operation. Normalized muscle activity increased from PRE to POST in the hamstring muscles by 87 ± 146% (116 ± 52 vs. 195 ± 139%EMGMVC, p < 0.001) and in the quadriceps by 54 ± 81% (26 ± 8…
2020
Decreases in aerobic fitness during military operations have been observed in several studies. Thus, differences in training adaptations during a 6-month crisis-management operation were compared by using the change in endurance performance as the outcome measure. Sixty-six male soldiers volunteered for the study, consisting of pre–post assessments of blood biomarkers, body composition, physical performance, and the military simulation test (MST) performance. Physical training volume was self-reported. After the follow-up, the data were divided based on individual changes in endurance performance. Endurance performance was improved in the high-responder group (HiR, n = 25) and maintained or…
2018
Physical fitness is crucial to warfighters' performance in the battlefield. Previous studies have shown negative changes in their hormonal and neuromuscular responses induced by military field training (MFT). The purpose of this study was to investigate the changes in hormonal and immunological values and body composition during a prolonged MFT and to find out how warfighters' physical condition influences these changes. Conscripts (n = 49, age 20 ± 1 years, height 179 ± 9 cm, body mass 73.8 ± 7.8 kg, fat 12.6 ± 3.7% and BMI 23 kg/m²) were measured before, during, after MFT, and after a 4-day recovery period. Serum insulin-like growth factor-1 (IGF-1), tumor necrosis factor alpha (TNF-α), i…
Presentación de las tareas, satisfacción de las necesidades psicológicas básicas y bienestar en atletas universitarios
2017
Basado en la teoria de las necesidades psicologicas basicas, se puso a prueba un modelo en el cual la presentacion de las tareas realizada por el entrenador predice la satisfaccion de las necesidades psicologicas basicas y el bienestar psicologico en los atletas universitarios. La muestra estuvo compuesta por un total de 468 deportistas (302 hombres y 166 mujeres), con edades comprendidas entre los 17 y los 28 a˜nos (M = 19.2; DT = 1.89), que cumplimentaron los instrumentos que evaluaban las variables del estudio. Los resultados del analisis de ecuaciones estructurales informaron que la presentacion de las tareas actuo como predictor positivo de la satisfaccion de las 3 necesidades psicolog…
Debate of Ideas and Understanding With Regard to Tactical Learning in Team Sports
2021
Purpose: The researchers discuss the debate of ideas (DoI) and student understanding conducted on questioning and student answers or discussions in game-based approaches and on DoI as used in the tactical-decision learning model.Literature Review: Literature regarding types of questions and expected student answers and questioning for learning in game-based approaches is reviewed. In addition, a brief overview of the context in which DoI was originally developed is presented.Findings and Discussion: Studies that used DoI are discussed with regard to the management of game play and observation, DoI content and the dynamics of student discussions, and impact on game play statistics and on stu…
Introducing postqualitative inquiry in sport and exercise psychology
2021
In recent years, qualitative research has gained popularity and legitimacy in sport and exercise psychology. However, this scientific discipline has not yet paid attention to postqualitative inquiry (PQI), despite the possibilities it offers for producing different knowledge and producing knowledge differently. The present article is the first attempt to rectify this lack of attention by offering a brief and partial sketch of PQI in the context of sport and exercise psychology. To start with, three of the basic propositions that enable PQI are described. These are: adopt a posthumanist view of ontology and the subject; engage with poststructuralism (necessarily) and new materialism (possibl…
Geschlecht als Differenzierungskategorie (in Führungspositionen) des Sports
2017
Am 26. Februar 2016 verabschiedeten die 207 stimmberechtigten Delegierten des auserordentlichen FIFA1-Kongress ihr neues Reformpaket. Neben einer Vielzahl von Veranderungen wurde hierbei auch erstmals die Einfuhrung einer Frauenquote beschlossen. Danach soll zukunftig „jede der sechs Konfoderationen (…) mindestens eine Frau in den FIFA-Rat entsenden. Als Ziel wird eine Frauenquote von 30 Prozent genannt.“ (zdfsport.de: 2016).
New Approaches to Identity in Sport
2020
Welcome to this Special Issue of Journal of Sport Psychology in Action, which offers new theoretical, methodological and applied considerations on what we (the editors) regard as the important topi...