| Summary: | 碩士 === 朝陽科技大學 === 工業工程與管理系碩士班 === 99 === Industrial workers may need to use gloves and maintain sustained gripping exertions for manual operations. Sustained gripping has been found implicated as a risk factor for fatigue by incremental muscle activity (contraction). Wearing gloves is also known to impair hand performances such as strength, sensitivity, dexterity, etc. Reduced hand performances and fatigue may lead to forceful exertions and awkward hand/wrist postures that have been recognized as risk factors associated with the development of musculoskeletal disorders (MSDs) in the upper extremities.
This study evaluates the effects of glove material (butyl, hypalon, and neoprene in two thicknesses) and level of gripping exertion (25%, 50%, and 100% of the maximum voluntary grip exertion) on maximum endurance time (MET) and forearm muscle activities of four forearm muscles when performing gripping task. Twelve male subjects free of musculoskeletal disorders in the upper extremities were recruited. Grip strength were measured for each subject using a Jamar hand dynamometer with transducer. The BIOPAC MP150 EMG System which includes amplifier & A/D converter and data acquisition software installed in a laptop will be used to collect and process the surface EMG signals.
The results show that the 0.015” butyl glove yielded highest MVC grip strength while the 0.03” hypalon glove yielded the lowest MVC grip strength. For the 25% sustained gripping exertion, the endurance time of the 0.015” butyl glove is the longest while the endurance time of the 0.03” neoprene glove is the shortest. This paper proposed to use the glove box gloves staff, operations need to wear gloves hand job, Butyl (0.015inch) glove is the most suitable gloves.
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