Abstract

The purpose of this study was to determine the association between corticomotor excitability (CME) of gluteus maximus (GM) and hip biomechanics during a single-leg drop-jump task. Thirty-two healthy individuals participated. The slope of the input-output curve (IOC) obtained from transcranial magnetic stimulation was used to assess CME of GM. The average hip extensor moment and peak hip flexion angle during the stance phase of the drop jump task was calculated. The slope of the IOC of GM was found to be a predictor of the average hip extensor moment (r² = 0.18, p = 0.016) and peak hip flexion angle (r² = 0.20, p = 0.01). Our results demonstrate that greater functional use of the hip was associated with enhanced descending neural drive of GM.

摘要

这项研究的目的是确定臀大肌（GM）的皮质运动兴奋性（CME）与单腿跳下跳动作中髋部生物力学之间的关联。32名健康人参加了比赛。从经颅磁刺激获得的输入输出曲线（IOC）的斜率用于评估GM的CME。计算了下降跳动作的站立阶段的平均髋伸肌力矩和峰值髋屈曲角度。发现GM的IOC斜率可预测平均髋伸肌力矩（r ² = 0.18，p  = 0.016）和峰值髋屈曲角（r ² = 0.20，p = 0.01）。我们的研究结果表明，更大程度地利用髋关节功能与增强的GM下降神经驱动力相关。