Centre for Health Exercise and Sports Medicine, Department of Physiotherapy, The University of Melbourne, Victoria, AUSTRALIA.
Med Sci Sports Exerc. 2018 May;50(5):1015-1020. doi: 10.1249/MSS.0000000000001525.
This study aimed to investigate whether knee and hip running moments differ across stages of female pubertal development.
This was a cross-sectional study comparing the barefoot running moments of 91 prepubertal (n = 31, Tanner stage I), early/midpubertal (n = 30, Tanner stages II and III), and late/postpubertal (n = 30, Tanner stages IV and V) girls. External peak moments for knee abduction (KAbM), knee adduction (KAM), knee flexion (KFM), and knee internal rotation (KIRM) were analyzed. Secondary measures of hip adduction moment at the time of peak KAbM and hip flexion moment at the time of peak KFM were also derived. Between-group differences were analyzed using a series of one-way ANOVAs and ANCOVAs.
At the knee, the late/postpubertal girls displayed a higher peak KFM and KAM compared with the prepubertal group (P < 0.05), and the early/midpubertal group exhibited a higher peak KFM than the prepubertal group (P = 0.034). No between-group differences were found for peak KAbM or KIRM (P > 0.05). At the hip, both the late/postpubertal (P = 0.03) and early/midpubertal girls (P = 0.039) ran with a lower hip adduction moment at the time of peak KAbM than the prepubertal girls. The hip flexion moment at the time of peak KFM in late/postpubertal girls was also significantly lower than both the early/mid- and prepubertal girls (P < 0.001).
Girls at the latter stages of puberty exhibit higher peak external knee flexion and adduction moments, but not abduction or internal rotation moments. This may be partly attributed to a lower hip flexion but higher hip abduction moment at the time of peak knee moments. Future research should examine whether these differences in knee kinetics between pubertal stages have implications for knee injuries such as patellofemoral pain syndrome.
本研究旨在探讨女性青春期发育不同阶段膝关节和髋关节跑步时的力学表现是否存在差异。
这是一项横断面研究，比较了 91 名青春期前女孩（n=31，Tanner 分期 I）、早期/中期青春期女孩（n=30，Tanner 分期 II 和 III）和晚期/后期青春期女孩（n=30，Tanner 分期 IV 和 V）的赤脚跑步时的膝关节外展（KAbM）、膝关节内收（KAM）、膝关节屈曲（KFM）和膝关节内旋（KIRM）的峰值时刻。还推导了膝关节外展峰值时刻的髋关节内收力矩和膝关节屈曲峰值时刻的髋关节屈曲力矩的次要测量值。使用一系列单因素方差分析和协方差分析比较组间差异。
在膝关节方面，晚期/后期青春期女孩的 KFM 和 KAM 峰值高于青春期前组（P<0.05），早期/中期青春期女孩的 KFM 峰值高于青春期前组（P=0.034）。KAbM 或 KIRM 的峰值在各组之间没有差异（P>0.05）。在髋关节方面，晚期/后期青春期女孩（P=0.03）和早期/中期青春期女孩（P=0.039）在膝关节外展峰值时刻的髋关节内收力矩均低于青春期前女孩。晚期/后期青春期女孩的 KFM 峰值时刻的髋关节屈曲力矩也显著低于早期/中期和青春期前女孩（P<0.001）。
青春期后期的女孩表现出更高的膝关节外展和内收峰值时刻，但膝关节外展和内旋时刻没有差异。这可能部分归因于在膝关节峰值时刻，髋关节的屈曲力矩降低，但外展力矩增加。未来的研究应探讨青春期阶段膝关节动力学的这些差异是否对髌股疼痛综合征等膝关节损伤有影响。
