Search results for "Sports"
showing 10 items of 4839 documents
Familial resemblance and diversity in bone mass and strength in the population are established during the first year of postnatal life
2010
Familial resemblance and diversity in bone structure and strength in adulthood are determined in part during growth. Whether these characteristics are established during gestation or shortly after birth is not known. Total-body, lumbar spine, and femoral neck size and mass and indices of tibial bending strength and distal radial compressive strength were measured using bone densitometry and quantitative computed tomography in 236 girls at 18.5 years of age. Among them, 219, 141, and 105 girls had crown-heel length (CHL) and weight recorded at birth and at 6 and 12 months of age, and then height and weight were recorded at 3, 5, 10, 13, and 15 years of age in 181, 176, 127, 111, and 228 girl…
Concentric and/or Eccentric Training-Induced Alterations in Shoulder Flexor and Extensor Strength
1997
To examine the effect of specific concentric and eccentric training on muscular strength following an initial standardized period of excessive training, shoulder extensors and flexors were tested. The shoulder is a joint particularly susceptible to injury and requires a specific strength training program. For a period of 12 weeks, subjects performed training, including concentric and eccentric actions. Thereafter, they were divided into three groups that performed specific 12-week programs, including either concentric (C-E/C), eccentric (C-E/E), or a combination of both concentric and eccentric exercises (C-E/C-E). Following the initial period of training, significant increases (p0.05) in p…
Rotational flywheel training in youth female team sport athletes: could inter-repetition movement variability be beneficial?
2020
Background: The aim of this study was to analyse the effects of an inter-repetition variable rotational flywheel training program (Variable) over standard rotational flywheel training (Standard). Methods: Twenty-four youth female team-sports players were randomly assigned to both training groups (Variable, n = 12; Standard, n = 12), which consisted of 1 set of 3 rotational flywheel exercises x 10-12 repetitions, biweekly for a period of 6-weeks. The participants included in Variable group were instructed to perform the movement randomly in one of the three directions (0o, 45o right, and 45o left). Measurements included reactive strength, jumping, change of direction, and sprinting tests; pa…
A lower-limb training program to improve balance in healthy elderly women using the T-Bow® Device
2009
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…
Glucose 6-P dehydrogenase delays the onset of frailty by protecting against muscle damage.
2021
Background: Frailty is a major age-associated syndrome leading to disability. Oxidative damage plays a significant role in the promotion of frailty. The cellular antioxidant system relies on reduced nicotinamide adenine dinucleotide phosphate (NADPH) that is highly dependent on glucose 6-P dehydrogenase (G6PD). The G6PD-overexpressing mouse (G6PD-Tg) is protected against metabolic stresses. Our aim was to examine whether this protection delays frailty. Methods: Old wild-type (WT) and G6PD-Tg mice were evaluated longitudinally in terms of frailty. Indirect calorimetry, transcriptomic profile, and different skeletal muscle quality markers and muscle regenerative capacity were also investigate…
The effects of rapid weight loss on skeletal muscle in judo athletes
2020
Abstract Objective To observe the effect of rapid weight loss (RWL) methods over 3 days on muscle damage in judokas. Methods Eighteen judokas participated in this crossover study, meaning that judo athletes were subjected to exercise-only phase (4 days) and RWL phase (3 days). Subjects were tested for myoglobin, creatine kinase, aldolase, hemoglobin, and hematocrit values on seven consecutive days. These biomarkers served as indicators of acute muscle damage. Results During the exercise-only phase, no significant changes were observed. Myoglobin (Mb) (p < 0.001), creatine kinase (CK) (p < 0.001) and aldolase (ALD) (p < 0.001) significantly increased only during the RWL phase, as we…
Feasibility of the Allergy Questionnaire for Athletes (AQUA © ) in pediatric age
2018
A burden of respiratory and allergic symptoms up to almost 60% has been observed in young and adult athletes, influencing physical performances1 . The Allergy Questionnaire for Athletes (AQUA©) is a validated screening tool for the prediction of the atopic status in adult athletes2 ; it was recently tested in Belgian young elite athletes (12-14 years old)3 , but its actual feasibility and suitability for children and adolescent was not evaluated. Indeed, there is evidence that children are prone to employ "satisficing" response strategies, answering every question positively/negatively, or simply not answering4 . Therefore, the present cross-sectional survey was carried out to assess feasib…
PLAYING-RELATED MUSCULOSKELETAL DISORDERS IN WOODWIND, BRASS AND PERCUSSION PLAYERS: A REVIEW
2010
Performing Arts Medicine is a broad field that includes the study of medical conditions and injuries incurred by dancers, instrument musicians and vocalists. Musicians' playing-related health problems have focused more and more the interest of scientists, researchers, physicians, physiotherapists and, in generally, of health care professionals during the last decades. The most relevant Performing Arts Medicine's literature of approximately the past twenty years has been summarized. Special attention has been given to studies concerning playing-related musculoskeletal conditions of musicians. Overuse syndrome is the most reported diagnosis among instrumental musicians suffering from playing-…
RETRACTED ARTICLE: Single joint exercises do not provide benefits in performance and anthropometric changes in recreational bodybuilders
2019
The purpose of the present study was to compare the changes in anthropometric measures and muscle performance in users and non-users of androgenic anabolic steroids (AAS) performing resistance trai...
A comparison of elastic tubing and isotonic resistance exercises.
2010
The aim of this study was to assess eff ects of a short-term resistance program on strength in fi t young women using weight machines / free weights or elastic tubing. 42 physically fi t women (21.79 ± 0.7 years) were randomly assigned to the following groups: (i) the Thera-Band ® Exercise Station Group (TBG); (ii) the weight machines / free weights group (MFWG); or (iii) the control group (CG). Each experimental group performed the same periodised training program that lasted for 8 weeks, with 2 – 4 sessions per week and 3 – 4 sets of 8 – 15 submaximal reps. A load cell (Isocontrol; ATEmicro, Madrid, Spain) was used to test the evolution of the Maximum Isometric Voluntary Contraction (MIVC…