Effects of 20 days bed rest on muscle morphology.
Effects of 20 days bed rest on muscle morphology.
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20 天卧床休息对肌肉形态的影响。
DOI：
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发表时间：
1997
期刊：
影响因子：
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通讯作者：
T. Fukunaga
中科院分区：
文献类型：
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作者：
T. Abe;Yasuo Kawakami;Y. Suzuki;A. Gunji;T. Fukunaga
在卧床休息（BR）前、中、后20天，使用超声评估腱膜的肌肉厚度和肌束角。受试者为健康成人（4名女性和4名男性）。分别在BR前后和恢复10周后进行测量。分别在躯干、上肢和下肢的9个部位进行肌肉测量。对于M。肱三头肌股外侧肌和股外侧肌。测量腓肠肌内侧肌、肌束与腱膜的角度以及肌肉厚度。四头肌的肌肉厚度和横截面积之间存在高度的统计学显著相关性，表明肌肉厚度可用于评估肌肉大小。卧床休息后下肢肌肉厚度减少2.1- 4.4%。在肱三头肌和股外侧肌，肌肉厚度和肌束角没有明显的变化。得出的结论是，肌肉形态恶化的肌肉结构的变化，卧床休息，但反应是小的和肌肉特异性。也有人认为，卧床休息不仅影响肌肉质量，但肌肉张力以及。
Using ultrasound, muscle thickness and fascicle angles from aponeurosis were evaluated before, during and after 20 days bed rest (BR). Subjects were healthy adults (4 women and 4 men). Measurements were carried out before and after BR and after 10 weeks of recovery, respectively. Muscle measurements were taken at nine sites in trunk and upper and lower extremities, respectively. For the m. triceps brachii, m. vastus lateralis, and m. gastrocnemius medialis, fascicle angles from the aponeurosis as well as muscle thickness were measured. There was a high statistical significant correlation between muscle thickness and cross-sectional area for quadriceps muscles, suggesting applicability of muscle thickness for evaluation of muscle size. Muscle thickness decreased in muscles of the lower extremity by 2.1-4.4 % after bed rest. In triceps brachii and vastus lateralis muscles, there were no prominent changes in muscle thickness and fascicle angles. It was concluded that muscle morphology deteriorates with changes in muscle architecture by bed rest but the response is small and muscle-specific. It was also suggested that bed rest affects not only muscle mass but muscle tone as well.