Effects of 8-Week In-Season Contrast Strength Training Program on Measures of Athletic Performance and Lower-Limb Asymmetry in Male Youth Volleyball Players

Abdeltif Mesfar, Raouf Hammami, Walid Selmi, Sabri Gaied-Chortane, Michael Duncan, Thomas G. Bowman, Hadi Nobari and Roland van den Tillaar
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Abdeltif Mesfar: Higher Institute of Sport and Physical Education of Ksar Said, Manouba University, Tunis 2010, Tunisia
Raouf Hammami: Higher Institute of Sport and Physical Education of Ksar Said, Manouba University, Tunis 2010, Tunisia
Walid Selmi: Higher Institute of Sport and Physical Education of Ksar Said, Manouba University, Tunis 2010, Tunisia
Sabri Gaied-Chortane: Higher Institute of Sport and Physical Education of Ksar Said, Manouba University, Tunis 2010, Tunisia
Michael Duncan: Centre for Sport, Exercise and Life Sciences, Coventry University, Coventry CV1 5FB, UK
Thomas G. Bowman: Department of Athletic Training, College of Health Sciences, University of Lynchburg, Lynchburg, VA 24501, USA
Hadi Nobari: Faculty of Sport Sciences, University of Extremadura, 10003 Cáceres, Spain
Roland van den Tillaar: Department of Sports Science, Nord University, 7600 Levanger, Norway

IJERPH, 2022, vol. 19, issue 11, 1-11

Abstract: Strength training using high and lower load such as contrast training (CST) seems to be beneficial as it addresses larger adaptive reserves in youth athletes. Therefore, the aim of this study was to investigate the effects of CST on dynamic balance (composite score during dynamic balance test (CS-YBT)), one repetition maximum lower-limb back squat (1RM), jumping performance (single-leg hop (SLH) or countermovement jump height (CMJ)), lower-limb asymmetry (predicted from the single-leg jump performance between two legs [ILA]) in elite youth male volleyball players. Thirty-one male youth volleyball players aged 14 years were randomly assigned to a CST group ( n = 16) or a control group ( n = 15). The tests were performed before and after 8 weeks of training. Significant group × time interactions was observed for CS-YBT [ p < 0.001, η p 2 = 0.70], 1RM [ p < 0.001, η p 2 = 0.95], SLH with right and left leg [ p < 0.001, η p 2 = 0.69 and 0.51], CMJ [ p < 0.001, η p 2 = 0.47]), whilst it was not notable in ILA [ p < 0.294]. Post hoc tests showed that CST group demonstrated greater improvement in all of the dependent variables from medium to large effect size (for all p < 0.001). As a result, 8 weeks of CST twice a week can be an effective and efficient training along with volleyball training to improve skill-related fitness measures, except for lower-limb asymmetry in young volleyball players.

Keywords: resistance training; power exercise; team sport; conditioning capabilities; lower extremity; dynamic balance (search for similar items in EconPapers)
JEL-codes: I I1 I3 Q Q5 (search for similar items in EconPapers)
Date: 2022
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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