Shah Sunnan, Collins Kieran, Macgregor Lewis J
Faculty of Health Sciences and Sport, University of Stirling, Stirling FK9 4LA, UK.
Gaelic Sports Research Centre, Institute of Technology Tallaght, D24 FKT9 Dublin, Ireland.
Sports (Basel). 2022 Aug 19;10(8):125. doi: 10.3390/sports10080125.
Background: Hamstring strains are the most common moderate-major severity injuries in football. The majority of hamstring injuries occur during sprinting, with low eccentric hamstring strength being associated with an elevated risk. Objective: To examine the relationship between sprinting and eccentric hamstring strength by monitoring total weekly sprint distance and weekly efforts > 90% and >95% of maximum velocity. Methods: Fifty-eight professional male footballers were observed over one-and-a-half seasons. Players’ running was monitored during training and matches using GPS, and eccentric hamstring strength was measured weekly. Results: Weekly sprint distance (ρ = −0.13, p < 0.01) and weekly efforts >90% of maximum velocity (ρ = −0.08, p = 0.01) both displayed significant inverse relationships with the percentage change in eccentric hamstring strength; weekly efforts >95% of maximum velocity showed no relationship with hamstring strength (ρ = −0.02, p = 0.45). Only weekly efforts >90% of maximum velocity significantly influenced the mean percentage change in eccentric hamstring force, F(3,58) = 3.71, p = 0.01, with significant differences occurring when comparing 7−8 sprint efforts with 0−2 efforts (0.11%, p = 0.03) and 5−6 efforts (0.12%, p = 0.03). Conclusions: Eccentric hamstring strength levels significantly decrease when 7−8 weekly sprint efforts are completed at >90% of maximum velocity. Monitoring weekly sprint loading at velocities > 90% of maximum velocity may be valuable to help to reduce the risk of hamstring injuries in professional football.
腘绳肌拉伤是足球运动中最常见的中度至重度损伤。大多数腘绳肌损伤发生在短跑过程中，腘绳肌离心力量低与风险升高相关。目的：通过监测每周的总短跑距离以及速度大于最大速度90%和95%的每周冲刺次数，研究短跑与腘绳肌离心力量之间的关系。方法：在一个半赛季中观察了58名职业男性足球运动员。使用GPS在训练和比赛期间监测球员的跑步情况，并每周测量腘绳肌离心力量。结果：每周短跑距离（ρ = -0.13，p < 0.01）和速度大于最大速度90%的每周冲刺次数（ρ = -0.08，p = 0.01）均与腘绳肌离心力量的百分比变化呈显著负相关；速度大于最大速度95%的每周冲刺次数与腘绳肌力量无相关性（ρ = -0.02，p = 0.45）。只有速度大于最大速度90%的每周冲刺次数对腘绳肌离心力的平均百分比变化有显著影响，F(3,58) = 3.71，p = 0.01，当比较7 - 8次冲刺与0 - 2次冲刺（0.11%，p = 0.03）和5 - 6次冲刺（0.12%，p = 0.03）时存在显著差异。结论：当每周以大于最大速度90%的速度完成7 - 8次短跑冲刺时，腘绳肌离心力量水平会显著下降。监测速度大于最大速度90%时的每周短跑负荷可能有助于降低职业足球中腘绳肌损伤的风险。
