SIZE AND STRENGTH OF THE QUADRICEPS MUSCLES OF OLD AND YOUNG-WOMEN
SIZE AND STRENGTH OF THE QUADRICEPS MUSCLES OF OLD AND YOUNG-WOMEN
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DOI：
10.1111/j.1365-2362.1984.tb01182.x
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发表时间：
1984-01-01
影响因子：
5.5
通讯作者：
CROWE, M
中科院分区：
文献类型：
--
作者：
YOUNG, A;STOKES, M;CROWE, M
肌力测定和复合超声成像可以客观地评价肌肉无力和消瘦。测量了健康女性70多岁(n=25)和20多岁(n=25)股四头肌的自主等长肌力，并与相同肌肉的股中横截面积进行了比较。当连续几天测量力量时，两组女性表现出相似的变异性(变异系数：8%)。老年女性比年轻女性虚弱35%(P<；0.001)，股四头肌横截面积减少33%(P<；0.001)。股四头肌力量与横截面积呈正相关(r=0.001.6 6，P<；0.0 1，老年组；r=0.5 3，P<；0.0 1，青年组)，且两组女性股四头肌力量与横截面积的主轴非常相似。因此，健康女性在3岁和8岁时股四头肌的内在力量没有差别。本报告还为客观评价女性患者股四头肌无力和/或消瘦提供了规范的数据。所涉及的技术很简单，测功器很容易制造，复合超声成像广泛适用。
Muscle weakness and wasting may be evaluated objectively by dynamometry and compound ultrasound imaging. The voluntary isometric strength of the quadriceps muscles of healthy women in their 70s (n = 25) and in their 20s (n = 25) was measured, and it was compared with the mid-thigh cross-sectional area of the same muscles. The 2 groups of women showed similar variability when strength was measured on consecutive days (coefficients of variation: 8%). The older women were 35% weaker than the young women (P < 0.001), and their quadriceps cross-sectional area was 33% less (P < 0.001). Quadriceps strength and cross-sectional area were correlated (r = 0.66, P < 0.001, elderly; r = 0.53, P < 0.01, young), and the principal axis of the relationship was closely similar for the 2 groups of women. There is therefore no difference in the intrinsic strength of the quadriceps muscles of healthy women in their 3rd and 8th decades. This report also provides normative data for the objective evaluation of quadriceps weakness and/or wasting in female patients. The techniques involved are straighforward, the dynamometer is easily made, and compound ultrasound imaging is widely available.