Department of Rehabilitation Medicine, Akita University Hospital, Akita, Japan.
Department of Physical Therapy, Akita University Graduate School of Health Sciences, Akita, Japan.
Phys Ther Sport. 2023 May;61:129-134. doi: 10.1016/j.ptsp.2023.03.009. Epub 2023 Mar 29.
To reveal the relationship between the knee valgus moment (KVM) and the hip abductor and adductor activity during single-leg landing.
A cross-sectional study.
Laboratory-based, between April 2020 and May 2021.
Thirty female collegiate athletes.
KVM, hip adduction angle, hip internal rotation angle, knee valgus angle (KVA), gluteus medius muscle activity, adductor longus muscle activity, adductor longus to gluteus medius activity ratio (ADD/GMED), and vertical component of the ground reaction force (vGRF).
Stepwise multiple regression analysis was performed. KVM was significantly positively associated with KVA (β = 0.613, p < 0.001), vGRF (β = 0.367, p = 0.010), and ADD/GMED (β = 0.289, p = 0.038).
Increased KVA, vGRF, and ADD/GMED were the independent factors that contributed to increased KVM during single-leg landing, and only ADD/GMED was found among the muscle activity values. The relative muscle activity of the gluteus medius and adductor longus, rather than those of the gluteus medius or adductor longus alone, may be useful in preventing anterior cruciate ligament injury during single-leg landing.
揭示单腿落地时膝关节外翻力矩（KVM）与髋外展肌和内收肌活动之间的关系。
横断面研究。
实验室，2020 年 4 月至 2021 年 5 月。
30 名女性大学生运动员。
KVM、髋内收角、髋内旋角、膝关节外翻角（KVA）、臀中肌肌电活动、内收长肌肌电活动、内收长肌与臀中肌活动比（ADD/GMED）和地面反力的垂直分量（vGRF）。
进行逐步多元回归分析。KVM 与 KVA（β=0.613，p<0.001）、vGRF（β=0.367，p=0.010）和 ADD/GMED（β=0.289，p=0.038）呈显著正相关。
KVA、vGRF 和 ADD/GMED 的增加是单腿落地时 KVM 增加的独立因素，而在肌肉活动值中仅发现 ADD/GMED。臀中肌和内收长肌的相对肌肉活动，而不是臀中肌或内收长肌的单独肌肉活动，可能有助于预防单腿落地时前交叉韧带损伤。
