EMG of trunk muscles in isometric and isokinetic MVC
EMG of trunk muscles in isometric and isokinetic MVC
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等长和等速 MVC 中躯干肌肉的肌电图
DOI：
10.1109/iembs.1989.96070
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发表时间：
1989
期刊：
影响因子：
--
通讯作者：
M. Redfern
中科院分区：
文献类型：
--
作者：
S. Kumar;D. Chaffin;M. Redfern
研究了10名正常男性在等速和多速等速（20 cm S/sup -1/、60 cm S/sup -1/和100 cm S/sup -1/）臂举和背举过程中，竖脊肌电活动与手部力量的关系。在活动周期的十分之一的时间间隔内，肌电信号的大小在等速背举中有显著差异（p<0.001），但在臂举和等速背举中没有显著差异。对于背举，肌电间隔点的差异在6%到16%之间，而手部力量间隔点的差异在26%到48%之间。力峰后肌电图与手力成反比，<<ETX>>
The relationship between the electromyographic activity of erector spinae at L/sub 3/ level and hand force during isometric and multispeed isokinetic (20 cm S/sup -1/, 60 cm S/sup -1/, and 100 cm S/sup -1/) arm lift and back lift was investigated among ten normal male subjects. The magnitude of the EMG (electromyogram) signals at the intervals of one-tenth of the activity cycle were significantly different during isokinetic back lifts (p<0.001) but not significantly different for either the arm lifts or isometric back lift. For the back lift the interval point differences were between 6% and 16% for EMG and between 26% and 48% for hand forces. The relationship between the EMG and the hand force during the post-peak-force period was inverse.<<ETX>>