Effect of prolonged bed rest on the anterior hip muscles
Effect of prolonged bed rest on the anterior hip muscles
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DOI：
10.1016/j.gaitpost.2009.08.002
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发表时间：
2009-11-01
期刊：
影响因子：
2.4
通讯作者：
Richardson, Carolyn
中科院分区：
文献类型：
--
作者：
Mendis, M. Dilani;Hides, Julie A.;Richardson, Carolyn
众所周知，长时间卧床休息和不活动会导致肌肉萎缩，此前的研究表明，参与关节稳定的肌肉更容易受到影响。髋关节前肌对髋关节的功能和稳定性很重要，但长期不运动对其功能的影响知之甚少。本研究探讨了长时间卧床休息对髋前肌大小及其恢复模式的影响。探讨了抗振运动对肌肉萎缩的防治作用。12名男性参与者，随机分为对照组和运动组，接受了8周的卧床休息和6个月的随访。在卧床休息和恢复阶段，定期用磁共振成像测量髂肌、腰肌、髂腰肌、缝阔肌和股直肌的肌肉横截面积（CSA）的变化。卧床休息时，髂腰肌和缝匠肌的csa在髋关节处下降（p < 0.05），而髂、腰肌和股直肌的csa不变（p < 0.05）。两组之间的所有肌肉没有发现显著差异（均p > 0.1），表明对策在本样本中无效。这些发现表明，长时间卧床休息可能导致髋关节特定肌肉萎缩，从而影响其稳定性和功能。(C) 2009 Elsevier B.V.版权所有
Prolonged bed rest and inactivity is known to cause muscular atrophy with previous research indicating that muscles involved in joint stabilisation are more susceptible. The anterior hip muscles are important for hip joint function and stability but little is known about the effects of prolonged inactivity on their function. This study investigated the effect of prolonged bed rest on the size of the anterior hip muscles and their pattern of recovery. The effect of resistive vibration exercise (RVE) as a countermeasure to muscle atrophy was also investigated. 12 male participants, randomly assigned to either a control or an exercise group, underwent 8 weeks of bed rest with 6 months follow-up. Changes in muscle cross-sectional area (CSA) of the iliacus, psoas, iliopsoas, sartorius and rectus femoris muscles were measured by magnetic resonance imaging at regular intervals during bed rest and recovery phases. CSAs of iliopsoas and sartorius decreased at the hip joint (p < 0.05) during bed rest but iliacus, psoas, and rectus femoris CSAs were unchanged (p > 0.05). No significant difference was found between the two groups for all muscles (all p > 0.1), suggesting inefficacy of the countermeasure in this sample. These findings suggest that prolonged bed rest can result in the atrophy of specific muscles across the hip joint which may affect its stability and function. (C) 2009 Elsevier B.V. All rights reserved.