a School of Medicine and Public Health , University of Newcastle, University Drive , Callaghan , Australia.
b The Gatherer Partnership , Aylesbury , UK.
Res Sports Med. 2018 Jul-Sep;26(3):276-288. doi: 10.1080/15438627.2018.1447475. Epub 2018 Mar 5.
The objective of this study was to investigate knee muscle strength characteristics in players from a high-level youth football Academy. In total, 110 players (aged 8-15 years) underwent muscle strength assessments carried out by a research physiotherapist using a computer-linked hand-held dynamometer. Results indicated that isometric hamstrings and quadriceps strength increased with age, whereas the isometric hamstring to quadriceps (H/Q) ratio decreased with age. A number of youth football players (n = 20; 18%; 95% CI: 11-27%) demonstrated isometric H/Q ratios of less than 0.60, as well as muscle strength asymmetries between limbs for the hamstrings (n = 40, 36%; 95% CI: 27-46%) and quadriceps (n = 51, 46%; 95% CI 37-56%), potentially increasing injury risk. This study provides new evidence that the isometric H/Q ratio reduces with advancing age during adolescence which may have important implications for junior athlete development and long-term injury prevention in football.
本研究旨在探讨高水平青年足球学院球员的膝关节肌肉力量特征。共有 110 名球员（8-15 岁）接受了研究理疗师使用电脑连接的手持式测力计进行的肌肉力量评估。结果表明，等长腘绳肌和股四头肌力量随年龄增长而增加，而等长腘绳肌与股四头肌（H/Q）比值随年龄下降。一些青年足球运动员（n=20；18%；95%置信区间：11-27%）的等长 H/Q 比值小于 0.60，并且腘绳肌（n=40，36%；95%置信区间：27-46%）和股四头肌（n=51，46%；95%置信区间 37-56%）的四肢肌肉力量存在不对称，可能会增加受伤风险。本研究提供了新的证据，表明等长 H/Q 比值在青少年时期随年龄增长而降低，这可能对青少年运动员的发展和足球运动的长期预防受伤具有重要意义。
