title: Isometric arm strength and subjective rating of upper limb fatigue in two-handed carrying tasks.
abstract: Sustained carrying could result in muscular fatigue of the upper limb. Ten male and ten female subjects were recruited for measurements of isometric arm strength before and during carrying a load for a period of 4 minutes. Two levels of load of carrying were tested for each of the male and female subjects. Exponential function based predictive equations for the isometric arm strength were established. The mean absolute deviations of these models in predicting the isometric arm strength were in the range of 3.24 to 17.34 N. Regression analyses between the subjective ratings of upper limb fatigue and force change index (FCI) for the carrying were also performed. The results indicated that the subjective rating of muscular fatigue may be estimated by multiplying the FCI with a constant. The FCI may, therefore, be adopted as an index to assess muscular fatigue for two-handed carrying tasks.
authors: Department of Industrial Management, Chung Hua University, Hsin-Chu, Taiwan.
authors: Kai Way
authors: KW
authors: Li
authors: Ph.D Program of Technology Management, Chung Hua University, Hsin-Chu, Taiwan.
authors: Wen-Sheng
authors: WS
authors: Chiu
mesh_terms: D000328:Adult; D000465:Algorithms; D005260:Female; D006801:Humans; D007537:Isometric Contraction; D008297:Male; D008954:Models, Biological; D018763:Muscle Fatigue; D053580:Muscle Strength; D034941:Upper Extremity; D055815:Young Adult