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ORIGINAL ARTICLE  EXERCISE PHYSIOLOGY AND BIOMECHANICS 

The Journal of Sports Medicine and Physical Fitness 2020 November;60(11):1444-52

DOI: 10.23736/S0022-4707.20.10962-9

Copyright © 2020 EDIZIONI MINERVA MEDICA

lingua: Inglese

Rotational flywheel training in youth female team sport athletes: could inter-repetition movement variability be beneficial?

Jorge AREDE 1, 2 , Oliver GONZALO-SKOK 3, Chris BISHOP 4, Wolfgang I. SCHÖLLHORN 5, Nuno LEITE 1

1 Research Center in Sports Sciences, Health Sciences and Human Development (CIDESD), University of Trás-os-Montes and Alto Douro, Vila Real, Portugal; 2 School of Education, Polytechnic Institute of Viseu, Viseu, Portugal; 3 Faculty of Health Sciences, University of San Jorge, Zaragoza, Spain; 4 Middlesex University, London, UK; 5 Institute of Sports Science, Johannes Gutenberg University Mainz, Mainz, Germany



BACKGROUND: The aim of this study was to analyze 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 ×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 (0°, 45° right, and 45° left). Measurements included reactive strength, jumping, change of direction, and sprinting tests; patellar tendon condition was also assessed.
RESULTS: Substantial improvements were found in vertical jump with left leg (16.9%), lateral jump with right leg (13.6%), and patellar condition in left leg (4.1%) for standard group, but also in reactive strength index in right leg landing (33.9%), vertical jump with right (10.1%) and left leg (12.0%) for variable group. A significant interaction effect (group × time) was observed on patellar condition in right leg (F=10.02, P<0.01, η2=0.37), favoring variable group.
CONCLUSIONS: Rotational flywheel training programs were beneficial for youth-female team-sports athletes, although the movement variability may play a key role to develop different and specific physical adaptations.


KEY WORDS: Resistance training; Wounds and injuries; Resistance training

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