Effects of hip and head position on ankle range of motion, ankle passive torque, and passive gastrocnemius tension
Effects of hip and head position on ankle range of motion, ankle passive torque, and passive gastrocnemius tension
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DOI：
10.1111/sms.12406
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发表时间：
2016-01-01
影响因子：
4.1
通讯作者：
Nordez, A.
中科院分区：
文献类型：
--
作者：
Andrade, R. J.;Lacourpaille, L.;Nordez, A.
踝关节的活动范围（ROM）明显受到髋关节位置的影响。然而，这一结果仍然无法解释。因此，本研究的目的是测试踝关节被动扭矩和腓肠肌张力是否受髋关节和头部位置的影响。扭矩和肌肉剪切弹性模量（通过弹性成像测量，以估计肌肉张力）收集在9名参与者在被动踝关节背屈在四个条件下进行（通过结合髋关节屈曲90或150度，头部屈曲或中立）。踝关节最大背屈角在屈髋150 ° ~ 90 °范围内显著减小（P0.05）。最大被动扭矩和剪切弹性模量随髋关节屈曲90度而升高（P0.05），在给定的共同踝关节角度下，扭矩和剪切弹性模量均高于各条件。由于髋角操纵而导致的最大踝角变化与被动扭矩和腓肠肌张力的变化无关。进一步的研究应致力于更好地了解周围神经和筋膜在踝关节ROM限制中的功能作用。
Ankle joint range of motion (ROM) is notably influenced by the position of the hip joint. However, this result remains unexplained. Thus, the aim of this study was to test if the ankle passive torque and gastrocnemius muscle tension are affected by the hip and the head positions. The torque and the muscle shear elastic modulus (measured by elastography to estimate muscle tension) were collected in nine participants during passive ankle dorsiflexions performed in four conditions (by combining hip flexion at 90 or 150 degrees, and head flexed or neutral). Ankle maximum dorsiflexion angle significantly decreased by flexing the hip from 150 to 90 degrees (P0.05). Maximal passive torque and shear elastic modulus were higher with the hip flexed at 90 degrees (P0.05) were found for both torque and shear elastic modulus at a given common ankle angle among conditions. Shifts in maximal ankle angle due to hip angle manipulation are not related neither to changes in passive torque nor tension of the gastrocnemius. Further studies should be addressed to better understand the functional role of peripheral nerves and fasciae in the ankle ROM limits.