Evaluation model of muscular fatigue for force exertion task

doi:10.16265/j.cnki.issn1003-3033.2018.10.014

Abstract

Abstract: A force (F) based evaluation model for subjective muscular fatigue was developed to explore workers' development of muscular fatigue during force exertion tasks. Firstly, pull strength and RPE for arm and waist over time period were obtained by simulated pulling tasks. Then, FD was normalized to describe the variation among participants. Secondly, the relationship between normalized FD (NFD) and RPE was analyzed by correlation analysis. Lastly, RPE regression equations (RPE-NFD regression equation) using the NFD as independent variable for arm and waist, respectively, were constructed via regression analysis. Also, the change of RPE along with time was analyzed. Results showed that RPE of arm and waist were both positive linear with NFD and that RPE regression equations were reasonable to describe the RPE-NFD relationships during force exertion tasks. Also, the constructed evaluation model of muscular fatigue for force exertion task was capable of showing the development of muscular fatigue. According to this model, RPE over time could be obtained for force exertion tasks .

Key words: muscular fatigue, force exertion task, ratings of perceived exertion(RPE), force decrease(FD), evaluation model

CLC Number:

X912.9

HU Hong, YI Cannan, LI Kaiway, TANG Fan, ZUO Huali, CHEN Chengfeng. Evaluation model of muscular fatigue for force exertion task[J]. China Safety Science Journal, 2018, 28(10): 79-85.

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