Ripley Nicholas Joel, Fahey Jack, Jones Paul, Batsford Jake, Sindall Paul, Bramah Christopher, Comfort Paul
Directorate of Psychology and Sport, University of Salford, Salford, Greater Manchester, United Kingdom.
Manchester Institute of Health and Performance, Nuffield Health, Epsom, Surry, United Kingdom.
PLoS One. 2025 May 29;20(5):e0324436. doi: 10.1371/journal.pone.0324436. eCollection 2025.
The purpose of the present study was to investigate if differences exist in neuromuscular qualities between different leagues in English male soccer. Twenty soccer players (age: 23.3 ± 5.2 years, stature: 180.3 ± 7.0 cm, mass: 82.5 ± 7.7 kg) from English football league two (EFL2). 34 soccer players (age: 25.8 ± 4.3 years, stature: 180.9 ± 5.6 cm, mass: 81.4 ± 8.6 kg) from National league (NL) and 23 soccer players (age: 27.5 ± 4.3 years, stature: 182.1 ± 5.5 cm, mass: 84.1 ± 8.0 kg) from National league North (NLN). Each player completed three to five repetitions of the countermovement jump (CMJ), countermovement rebound jump (CMJRJ) and isometric mid-thigh pull (IMTP). Trivial to small differences were observed in CMJ jump height, CMJ momentum, relative average braking and propulsion force, time to take-off and modified reactive strength index (RSI) (p > 0.265, d = 0.05-0.55). However, moderate to large (p ≤ 0.009, d = 0.94-1.25) differences were observed in countermovement depth. Trivial to moderate differences were observed in absolute and relative peak net force and force at 100 and 250 ms (p ≥ 0.092, d = 0.13-0.63). Trivial to moderate differences were observed in CMJRJ rebound jump height and rebound jump momentum (p ≥ 0.440, d = 0.17-0.41). NLN players had longer rebound contact time and lower rebound RSI, rebound average relative braking and propulsion forces to a large magnitude (p ≤ 0.001, d = 1.18-1.85), with small differences between ELF2 and NL (p > 0.536, d = 0.11-0.39). Lower reactive qualities of NLN players could explain observed leagues, considering their relationship with match scoring situations. All players would be considered weak (<30 N/kg) and practitioners should prioritise lower limb strength across all leagues.
本研究的目的是调查英格兰男子足球不同联赛之间神经肌肉素质是否存在差异。20名来自英格兰足球乙级联赛（EFL2）的足球运动员（年龄：23.3±5.2岁，身高：180.3±7.0厘米，体重：82.5±7.7千克）。34名来自全国联赛（NL）的足球运动员（年龄：25.8±4.3岁，身高：180.9±5.6厘米，体重：81.4±8.6千克）和23名来自全国北部联赛（NLN）的足球运动员（年龄：27.5±4.3岁，身高：182.1±5.5厘米，体重：84.1±8.0千克）。每名运动员完成了3至5次的纵跳（CMJ）、纵跳反弹跳（CMJRJ）和等长大腿中部拉力（IMTP）。在CMJ的跳跃高度、CMJ动量、相对平均制动力和推进力、起跳时间和改良反应力量指数（RSI）方面观察到微小至小的差异（p>0.265，d=0.05 - 0.55）。然而，在纵跳深度方面观察到中等至大的差异（p≤0.009，d=0.94 - 1.25）。在绝对和相对峰值净力以及100和250毫秒时的力方面观察到微小至中等的差异（p≥0.092，d=0.13 - 0.63）。在CMJRJ的反弹跳跃高度和反弹跳动量方面观察到微小至中等的差异（p≥0.440，d=0.17 - 0.41）。NLN球员的反弹接触时间更长，反弹RSI、反弹平均相对制动力和推进力更低，幅度较大（p≤0.001，d=1.18 - 1.85），EFL2和NL之间差异较小（p>0.536，d=0.11 - 0.39）。考虑到NLN球员与比赛得分情况的关系，其较低的反应素质可以解释所观察到的联赛差异。所有球员都被认为力量较弱（<30N/kg），从业者应在所有联赛中优先考虑下肢力量。
