Bouguezzi Raja, Negra Yassine, Sammoud Senda, Chaabene Helmi
Research Laboratory (LR23JS01) "Sport Performance, Health & Society", Manouba 2010, Tunisia.
Higher Institute of Sport and Physical Education of Ksar Saïd, University of "La Manouba", Manouba 2037, Tunisia.
J Funct Morphol Kinesiol. 2025 Jul 9;10(3):260. doi: 10.3390/jfmk10030260.
: This randomized controlled trial investigated the effects of an 8-week, volume-equated eccentric training program comprising Nordic hamstring and reverse Nordic exercises performed either once or twice per week on measures of physical fitness in pubertal male soccer players. A total of 34 participants were randomly assigned into a 1-day ( = 16; age = 14.58 ± 0.28 years) or 2-day ( = 18; age = 14.84 ± 0.22 years) per week training group. Physical fitness was assessed using 5 m and 10 m sprints, the 505 change in direction (CiD) speed test, Y-shaped agility test, countermovement jump (CMJ), and standing long jump (SLJ). : Significant group-by-time interactions were observed for the 505 CiD test, agility, and CMJ performance (effect sizes [ES] = 0.80 to 1.13). However, no significant interactions were found for the 5 and 10 m sprints or for SLJ ( > 0.05). Compared to the 1-day group, the 2-day training group showed greater improvements in CiD speed (∆7.36%; < 0.001; ES = 0.92), agility (∆7.91%; < 0.001; ES = 1.68), and CMJ (∆7.44%; < 0.01; ES = 0.35), while no differences were observed in 5 and 10 m linear sprints or SLJ performance. According to individual response analysis, improvements across the physical fitness parameters beyond the smallest worthwhile change (SWC) were observed in 22-83% of players in the 1-day group and 77-100% in the 2-day group. : In summary, the findings suggest that when training volume is matched, distributing the eccentric training regimen over two days per week may lead to greater improvements in CiD speed, agility, and CMJ performance compared to a single-day approach.
这项随机对照试验研究了一项为期8周、训练量相等的离心训练计划的效果，该计划包括北欧腿弯举和反向北欧练习，每周进行一次或两次，对青春期男性足球运动员的身体素质指标进行测量。共有34名参与者被随机分配到每周1天（n = 16；年龄 = 14.58 ± 0.28岁）或每周2天（n = 18；年龄 = 14.84 ± 0.22岁）的训练组。使用5米和10米短跑、505变向（CiD）速度测试、Y形敏捷性测试、反向纵跳（CMJ）和立定跳远（SLJ）来评估身体素质。在505 CiD测试、敏捷性和CMJ表现方面观察到显著的组×时间交互作用（效应大小[ES] = 0.80至1.13）。然而，在5米和10米短跑或SLJ方面未发现显著的交互作用（P > 0.05）。与1天训练组相比，2天训练组在CiD速度（∆7.36%；P < 0.001；ES = 0.92）、敏捷性（∆7.91%；P < 0.001；ES = 1.68）和CMJ（∆7.44%；P < 0.01；ES = 0.35）方面有更大的改善，而在5米和10米直线短跑或SLJ表现方面未观察到差异。根据个体反应分析，1天训练组中22 - 83%的运动员以及2天训练组中77 - 100%的运动员在身体素质参数上的改善超过了最小有价值变化（SWC）。总之，研究结果表明，当训练量相匹配时，与单日训练方法相比，将离心训练方案分布在每周两天可能会在CiD速度、敏捷性和CMJ表现方面带来更大的改善。
