NDLI: Effects of combined electromyostimulation and gymnastics training in prepubertal girls.

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Effects of combined electromyostimulation and gymnastics training in prepubertal girls.

Content Provider	World Health Organization (WHO)-Global Index Medicus
Author	Deley, Gaëlle Cometti, Carole Fatnassi, Anaïs Paizis, Christos Babault, Nicolas
Description	Country affiliation: France Author Affiliation: Deley G ( Performance Expertise Center Gilles Cometti, Faculty of Sports Sciences, University of Burgundy, Dijon, France. gaelle.deley@u-bourgogne.fr)
Abstract	This study investigated the effects of a 6-week combined electromyostimulation (EMS) and gymnastic training program on muscle strength and vertical jump performance of prepubertal gymnasts. Sixteen young women gymnasts (age 12.4 ± 1.2 yrs) participated in this study, with 8 in the EMS group and the remaining 8 as controls. EMS was conducted on knee extensor muscles for 20 minutes 3 times a week during the first 3 weeks and once a week during the last 3 weeks. Gymnasts from both groups underwent similar gymnastics training 5-6 times a week. Isokinetic torque of the knee extensors was determined at different eccentric and concentric angular velocities ranging from -60 to +240° per second. Jumping ability was evaluated using squat jump (SJ), counter movement jump (CMJ), reactivity test, and 3 gymnastic-specific jumps. After the first 3 weeks of EMS, maximal voluntary torque was increased (+40.0 ± 10.0%, +35.3 ± 11.8%, and +50.6 ± 7.7% for -60, +60, and +240°sâ»¹, respectively; p < 0.05), as well as SJ, reactivity test and specific jump performances (+20.9 ± 8.3%, +20.4 ± 26.2% and +14.9 ± 17.2% respectively; p < 0.05). Six weeks of EMS were necessary to improve the CMJ (+10.1 ± 10.0%, p < 0.05). Improvements in jump ability were still maintained 1 month after the end of the EMS training program. To conclude, these results first demonstrate that in prepubertal gymnasts, a 6-week EMS program, combined with the daily gymnastic training, induced significant increases both in knee extensor muscle strength and nonspecific and some specific jump performances.
File Format	HTM / HTML
ISSN	10648011
Issue Number	2
Volume Number	25
e-ISSN	15334287
Journal	Journal of Strength and Conditioning Research
Language	English
Publisher	Lippincott Williams & Wilkins
Publisher Date	2011-02-01
Publisher Place	United States
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Discipline Sport Sciences Electric Stimulation Methods Gymnastics Physiology Muscle Strength Physical Education And Training Adolescent Athletes Statistics & Numerical Data Athletic Performance Child Cohort Studies Female Humans Kinetics Muscle Contraction Muscle, Skeletal Reference Values Reproducibility Of Results Time Factors Comparative Study Journal Article
Content Type	Text
Resource Type	Article
Subject	Orthopedics and Sports Medicine Physical Therapy, Sports Therapy and Rehabilitation Sports Science

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