Tepperman P S, Mazliah J, Naumann S, Delmore T
Am J Phys Med. 1986 Apr;65(2):69-74.
A prospective study of 20 normal subjects was undertaken to determine the effect of three ankle positions (active dorsiflexion, active plantar flexion, natural or rest position) on comfort and facilitation of quadriceps contraction in isometric strengthening in a supine position with the hip and knee fully extended. Surface EMG activity was found to be greatest for the vastus lateralis followed by the vastus medialis and least for the rectus femoris. Equal facilitation was apparent with either active ankle dorsiflexion or plantar flexion. Both were superior to the natural (rest) position. In situations where isometric quadriceps exercises are required, the authors recommend either active ankle dorsiflexion or plantar flexion to facilitate quadriceps strengthening. The choice between the two positions should be based on patient comfort.
对20名正常受试者进行了一项前瞻性研究，以确定三种踝关节位置（主动背屈、主动跖屈、自然或休息位置）对仰卧位、髋膝关节完全伸展时等长强化训练中股四头肌收缩舒适度和促进作用的影响。结果发现，外侧股四头肌的表面肌电图活动最大，其次是内侧股四头肌，而股直肌的活动最小。主动踝关节背屈或跖屈时的促进作用相当明显。两者均优于自然（休息）位置。在需要进行股四头肌等长运动的情况下，作者建议采用主动踝关节背屈或跖屈来促进股四头肌强化。两种位置之间的选择应基于患者的舒适度。
