Quadriceps muscle strength and dynamic stability in elderly persons.
Quadriceps muscle strength and dynamic stability in elderly persons.
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DOI：
10.1016/s0966-6362(99)00018-1
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发表时间：
1999-09
期刊：
影响因子：
2.4
通讯作者：
D. Scarborough;David E. Krebs;David E. Krebs;Bette Ann Harris
中科院分区：
文献类型：
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作者：
D. Scarborough;David E. Krebs;David E. Krebs;Bette Ann Harris
在与股四头肌肌力相关的两种功能活动中，有几项动态稳定性的测量。居住在波士顿地区的34名残疾老年人(年龄60-88岁)同意接受最大等长股四头肌肌力测试、椅子抬起和步态分析。升椅时股四头肌力量与上体最大垂直线动量r=0.005.5 3，P<0.0 5，前后线动量r=0.38，P<0.0 5，完成升椅时间r=−0.48，P<0.0 5，n=2 9。步长和步速与股四头肌肌力呈正相关(r=0.56P<；0.001和r=0.51P<；0.002，n=34)。步态时全身前后线动量的最大幅度与股四头肌力量呈正相关(r=0.47，P=0.004，n=31)。在功能受限的老年人中，在椅子抬起和以首选速度行走时的动态稳定性与股四头肌肌力直接相关。在我们的样本中，老年人执行了三种从椅子上抬起的运动策略之一，而股四头肌的力量在椅子抬起策略组之间没有统计学上的差异。然而，拥有最大股四头肌力量值的人更稳定，无论他们执行哪种椅子上升策略。我们的数据表明，除非患者有足够的力量控制这些诱导力，否则临床医生不应建议患者使用代偿性动量诱导运动策略。
Several measures of dynamic stability during two functional activities correlated to quadriceps femoris muscle strength. A total of 34 disabled elders (aged 60–88) living in the Boston area consented to maximum isometric quadriceps muscle strength testing, chair rise and gait analysis. During chair rise, quadriceps strength significantly correlated with maximum upper body vertical linear momentum, r=0.53, P<0.005, anterior posterior linear momentum, r=0.38, P<0.05, and the time to complete the chair rise, r=−0.48, P<0.05, n=29. Stride length and gait velocity correlated (r=0.56, P<0.001 and r=0.51, P<0.002, n=34) with quadriceps muscle strength. The maximum range of whole body anteroposterior (A/P) linear momentum during gait also correlated with quadriceps strength (r=0.47, P=0.004, n=31). Dynamic stability during chair rise and gait, at preferred speed, correlates directly with quadriceps femoris muscle strength in functionally limited elderly individuals. In our sample, elders performed one of three movement strategies to arise from a chair, and quadriceps strength did not statistically differ between the chair rise strategy groups. However, persons with the greatest quadriceps strength values were more stable regardless of which chair rise strategy they performed. Our data indicate that clinicians should not suggest that patients use compensatory momentum inducing locomotor strategies unless the patient has sufficient strength to control these induced forces.