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首页> 外文期刊>Physiotherapy theory and practice >Isometric knee extension force measured using a handheld dynamometer with and without belt-stabilization
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Isometric knee extension force measured using a handheld dynamometer with and without belt-stabilization

机译：使用带和不带稳定装置的手持测功机测量的等距膝盖伸展力

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Although evidence suggests that tester strength limits the magnitude of isometric force that can be measured using a handheld dynamometer (HHD), previous studies have not investigated the actual limits of force magnitude that can be measured by trained testers when a belt is or is not used to stabilize the dynamometer. Therefore, the primary aims of this study were to determine: 1) the magnitude of knee extension forces that could be measured with a HHD with and without belt-stabilization and 2) the relationship between tester characteristics and knee extension strength measured with and without belt-stabilization. The characteristics of 20 trained testers (10 men, 10 women) were determined. Thereafter, they measured isometric knee extension strength using the MicroFET HHD with and without belt-stabilization. Paired t-tests were used to compare maximal knee extension forces under two conditions. Pearson productmoment correlations were calculated to determine the relationship between tester characteristics and knee extension forces measured under the two conditions. Knee extension forces (Newtons) measured using the HHD without belt-stabilization (470.6±179.8) were significantly lower (t-7.968, p<0.001) than those measured with belt-stabilization (866.9±131.7). Pearson correlations between tester characteristics and knee extension forces measured with no belt-stabilization were all statistically significant (p≤0.002); however, the correlations were not statistically significant under the belt-stabilization condition. The forces that can be measured with a HHD are higher than those suggested by previous researchers. By rectifying limitations imposed by tester strength, use of a belt allows very high knee extension forces to be measured.
机译：尽管有证据表明测试仪的强度会限制可以使用手持式测功机（HHD）测得的等距力的大小，但先前的研究并未调查受过培训的测试员在使用皮带或不使用皮带时可以测量到的实际力的极限值。稳定测功机。因此，本研究的主要目的是确定：1​​）在有和没有皮带稳定的情况下，HHD可以测量的膝盖伸展力的大小; 2）在有和没有皮带的情况下，测试仪特性与膝盖伸展力量之间的关系-稳定化。确定了20位训练有素的测试人员（10位男性，10位女性）的特征。此后，他们使用带和不带稳定装置的MicroFET HHD测量了等距膝盖伸展强度。配对的t检验用于比较两种情况下的最大膝盖伸展力。计算皮尔逊乘积矩相关性，以确定在这两种条件下测得的测试仪特性与膝盖伸展力之间的关系。使用没有稳定带的HHD测得的膝关节伸展力（牛顿）（470.6±179.8）明显低于使用稳定带的HHD测得的膝关节伸展力（t-7.968，p <0.001）（866.9±131.7）。在没有皮带稳定的情况下，测试者的身体状况与膝盖伸展力之间的皮尔森相关性具有统计学意义（p≤0.002）;但是，在皮带稳定条件下，相关性在统计学上不显着。用HHD可以测量的力高于以前的研究人员建议的力。通过纠正由测试人员的力量造成的限制，使用皮带可以测量非常高的膝盖伸展力。

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