Faculty of Sport, University of Ljubljana, Ljubljana, Slovenia -
Faculty of Sport, University of Ljubljana, Ljubljana, Slovenia.
J Sports Med Phys Fitness. 2022 Jun;62(6):822-829. doi: 10.23736/S0022-4707.21.12370-9. Epub 2021 May 10.
Ankle sprain is the most common acute time-loss injury in volleyball and occurs mainly during landing from a jump. Therefore, we have evaluated the role of quadriceps strength and countermovement jump height on ankle sprain occurrence, as these intrinsic modifiable risk factors were not yet evaluated. We have also hypothesized that presence of quadriceps strength asymmetry could be a possible risk factor for ankle sprains in male volleyball players.
This was a prospective cohort study. Male volleyball players (N.=99) from Slovenian national league participated in the study. Before the start of the season, all participants completed a preseason questionnaire and underwent evaluation of vertical jump performance and bilateral isokinetic strength of the quadriceps (Q) and hamstrings (H). During the subsequent season the players reported acute time loss injuries because of ankle sprain through a weekly questionnaire.
We have registered 19 ankle sprains during the season. Overall ankle sprain incidence was 0.41±0.24 per 1000 h. Previous ankle sprain (Odds Ratio: 0.86; 95% CI: 0.25-2.89, P=0.802) and jump height (1.05; 95% CI: 0.94-1.19, P=0.393) were not significant risk factors, while Q strength asymmetry was a significant predictor of an ankle sprain (Odds Ratio: 0.956; 95% CI: 0.919-0.995, P=0.026). Compared with the uninjured players, the injured players had higher right concentric Q strength, higher Q strength asymmetry, and lower concentric right H-Q strength ratio (all P<0.03).
Our results suggest that excessive concentric strength of the right Q, which leads to low H-Q strength ratio, and high bilateral Q strength asymmetry in favor of the right side, could be associated with increased risk of ankle sprains in male volleyball.
踝关节扭伤是排球中最常见的急性运动损伤，主要发生在从跳跃中落地时。因此，我们评估了股四头肌力量和反跳高度对踝关节扭伤发生的作用，因为这些内在的可改变的危险因素尚未得到评估。我们还假设股四头肌力量不对称的存在可能是男性排球运动员踝关节扭伤的一个可能的危险因素。
这是一项前瞻性队列研究。来自斯洛文尼亚国家联赛的男性排球运动员（N.=99）参加了这项研究。在赛季开始前，所有参与者都完成了一份季前调查问卷，并接受了垂直跳跃表现和双侧股四头肌（Q）和腘绳肌（H）等速力量的评估。在随后的赛季中，球员们通过每周的问卷报告因踝关节扭伤而导致的急性时间损失损伤。
我们在赛季中记录了 19 例踝关节扭伤。总的踝关节扭伤发生率为 0.41±0.24/1000 小时。既往踝关节扭伤（优势比：0.86；95%可信区间：0.25-2.89，P=0.802）和跳跃高度（1.05；95%可信区间：0.94-1.19，P=0.393）不是显著的危险因素，而 Q 力量不对称是踝关节扭伤的显著预测因素（优势比：0.956；95%可信区间：0.919-0.995，P=0.026）。与未受伤的球员相比，受伤的球员右侧股四头肌的等速向心力量更高，Q 力量不对称更高，右侧股四头肌和腘绳肌的等速向心力量比更低（所有 P<0.03）。
我们的研究结果表明，右侧股四头肌的过度等速向心力量导致 H-Q 力量比降低，以及右侧股四头肌力量的双侧不对称增加，可能与男性排球运动员踝关节扭伤的风险增加有关。
