國人男性雙人物料提舉能力之研究

The Study of Bi-Manual Lifting Tasks in Chinese Males

吳水丕(Swei-Pi Wu) ； 林祺軒(Chi-Hsuan Lin)

《技術學刊》 20卷2期 (2005/06) Pp. 175-183

https://doi.org/10.29507/JT.200506.0008

摘要

The purpose of this study was to explore and assess manual material handling problems involving bi-manual lifting tasks. Eleven young male Chinese subjects were recruited to participate in the bi-manual lifting task. The psychophysical approach was used to investigate the effect of different standing heights (2cm, 4cm, 6cm, 8cm, 10cm, 12cm and 14cm) and the different lifting frequencies (1 lift/min and 4 lifts/min) on maximum acceptable weight of lifting (MAWL), heart rate (HR), and rating of perceived exertion (RPE) for a 1 hour work period. The results showed that the MAWL was not significantly affected by different standing heights. The mean HR values were significantly influenced by the different standing heights (p＜0.05). However, the subjects' MAWL and HR values were significantly influenced by lifting frequency (P＜0.01). Some of the RPE values of the body segments were rated significantly different. Finally, based on the aforementioned results, the study developed prediction models for bi-manual lifting weight and lifting performance. The second model, using the sum of the individual lifting weight (C3) and the sum of the individual one time maximum weight(MT) is best (R^2=0.58, R^2(subscript adj)=0.55, PRESS=1495.62).

關鍵字

人工物料搬運 ； 雙人提舉作業 ； 心物法 ； 身高差異

並列摘要

The purpose of this study was to explore and assess manual material handling problems involving bi-manual lifting tasks. Eleven young male Chinese subjects were recruited to participate in the bi-manual lifting task. The psychophysical approach was used to investigate the effect of different standing heights (2cm, 4cm, 6cm, 8cm, 10cm, 12cm and 14cm) and the different lifting frequencies (1 lift/min and 4 lifts/min) on maximum acceptable weight of lifting (MAWL), heart rate (HR), and rating of perceived exertion (RPE) for a 1 hour work period. The results showed that the MAWL was not significantly affected by different standing heights. The mean HR values were significantly influenced by the different standing heights (p＜0.05). However, the subjects' MAWL and HR values were significantly influenced by lifting frequency (P＜0.01). Some of the RPE values of the body segments were rated significantly different. Finally, based on the aforementioned results, the study developed prediction models for bi-manual lifting weight and lifting performance. The second model, using the sum of the individual lifting weight (C3) and the sum of the individual one time maximum weight(MT) is best (R^2=0.58, R^2(subscript adj)=0.55, PRESS=1495.62).

並列關鍵字

manual material handling ； bi-manual lifting task ； psychophysical approach ； different standing height

參考文獻

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Dempsey, P.G.,Hashemi, L.(1999).Analysis of workers` compensation claims associated with manual materials handling.Ergonomic.42,183-195.

National Institute for Occupational Safety and Health(1981).Work practices guide for manual lifting.Washington, DC:Superintendent of Documents.

Waters T.R.,Putz-Anderson V.,Garg, A.,Fine, L.J.(1993).Revised NIOSH equation for the design and evaluation of manual lifting tasks.Ergonomics.36,769-776.

Karwowski, M.,Mital, A.(1986).Isometric and isokinetic testing of lifting strength of males in teamwork.Ergonomic.29,869-878.