Objective The Wheelchair Tennis (WCT) discipline shows multiple changes of direction and intermittent manual propulsion as acceleration, deceleration, resting and turning which identify the discipline model. The aim of this study was to evaluate the variation of Intermittent Maximal Voluntary Contraction (IMVC) without racquets (WoR) and with racquets (WR) in relation to specific weight training protocol in a group of wheelchair tennis athletes. Methods Twelve WCT athletes with different levels of disability participated in this study. The athletes were divided into two groups of 6 athletes: the experimental group (EG, age 42±12 years, weight 63±16 kg, height 170±18 cm, period of training 5±3 years), in addition to tennis training on the court (twice a week), followed a weight training programme for four weeks (twice a week); the control group (CG, age 44±8 years, weight 79±17 kg, height 175±7 cm, period of training 10±4 years) did not change their tennis training habits. In order to avoid the learning effect of weight exercises both groups trained with them for one mouth. After that period were evaluated at the beginning (T0) and after (T1) one month of weight training to verify the effects of weight training with a specific isometric test, which consisted of 10 maximal concentric repetitions lasting 3 seconds with a 3-second pause between each one. The IMVC was measured using the TESYS system (Total Evaluation System, Globus, Treviso, Italy) which was connected to a isometric load cell (ESYCC300, Globus, Treviso, Italy). Results The homogeneity strength propulsion at the beginning of the study shows no significant variation (Mann-Whitney test). Data analysis (T0 vs T1, Wilcoxon test) showed a significant increase in IMVC in EG in WoR (p<0.05, +8%) and WR (p<0.05, +7%). No significant changes were observed in CG. Conclusion Four weeks of weight training increases the IMVC in WoR and WR conditions. The results highlight that training with weights can significantly contribute to improve physical efficiency.
DISABILITY AND SPORTS: INTERMITTENT MAXIMAL VOLUNTARY CONTRACTION IN WHEELCHAIR TENNIS ATHLETES.
GOLLIN, MASSIMILIANO
2015-01-01
Abstract
Objective The Wheelchair Tennis (WCT) discipline shows multiple changes of direction and intermittent manual propulsion as acceleration, deceleration, resting and turning which identify the discipline model. The aim of this study was to evaluate the variation of Intermittent Maximal Voluntary Contraction (IMVC) without racquets (WoR) and with racquets (WR) in relation to specific weight training protocol in a group of wheelchair tennis athletes. Methods Twelve WCT athletes with different levels of disability participated in this study. The athletes were divided into two groups of 6 athletes: the experimental group (EG, age 42±12 years, weight 63±16 kg, height 170±18 cm, period of training 5±3 years), in addition to tennis training on the court (twice a week), followed a weight training programme for four weeks (twice a week); the control group (CG, age 44±8 years, weight 79±17 kg, height 175±7 cm, period of training 10±4 years) did not change their tennis training habits. In order to avoid the learning effect of weight exercises both groups trained with them for one mouth. After that period were evaluated at the beginning (T0) and after (T1) one month of weight training to verify the effects of weight training with a specific isometric test, which consisted of 10 maximal concentric repetitions lasting 3 seconds with a 3-second pause between each one. The IMVC was measured using the TESYS system (Total Evaluation System, Globus, Treviso, Italy) which was connected to a isometric load cell (ESYCC300, Globus, Treviso, Italy). Results The homogeneity strength propulsion at the beginning of the study shows no significant variation (Mann-Whitney test). Data analysis (T0 vs T1, Wilcoxon test) showed a significant increase in IMVC in EG in WoR (p<0.05, +8%) and WR (p<0.05, +7%). No significant changes were observed in CG. Conclusion Four weeks of weight training increases the IMVC in WoR and WR conditions. The results highlight that training with weights can significantly contribute to improve physical efficiency.
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