Adjustment Period Effects on Psychophysical Lifting Capacity for Female Participants

調整時間對於女性受試者心物法抬舉能力之效應

吳水丕(Swei-Pi Wu)

《工業工程學刊》 26卷6期 (2009/11) Pp. 433-439

https://doi.org/10.29977/JCIIE.200911.0001

摘要

心物法調整時間對於男性受試者之抬舉能力具有顯著效應已被Wu和Chen [32]所證實。本研究延續Wu和Chen的研究調查調整時間對於女性受試者之效應並檢查性別之差異。本研究共有8位女性受試者參與實驗，每位受試者必須模擬八小時工作期間執行從地面抬舉至指節高共16種不同的抬舉作業，包括四種調整時間（20、30、40和50分鐘）以及四種抬舉頻率（1次／分、2次／分、4次／分和6次／分）。研究顯示，調整時間對於最大可承受抬舉重量和主觀施力知覺評量有顯著的效應。隨著調整時間的增加MAWL顯著的減少。當調整時間爲30、40和50分鐘時，受試者的MAWL分別減少4.2 %、7.5 %和11.9 %，且隨著調整時間的增加RPE值亦隨著增加。另外，本研究證實性別差異在調整時間和抬舉頻率並不顯著。整體而言，本研究顯示當調整時間從40分減少至30分以及從40分減少至20分時，MAWLs分別高估了3.6%和8.1%。

關鍵字

心理物理學法 ； 調整時間 ； 人工物料搬運 ； 最大可承受抬舉重量

並列摘要

The effect of adjustment period on psychophysically lifting capacity for males had been verified by Wu and Chen [32]. This paper extends Wu and Chen’s study to investigate the adjustment periods effects of females and to examine the difference between genders. Eight female participates were recruited to perform 16 different combinations of lifting tasks involving four adjustment periods (20, 30, 40, and 50 min) and four lifting frequencies (1, 2, 4 ,and 6 lifts/min) from the floor to knuckle height for 8-h work shift. The adjustment period effects on the MAWL, and RPE values were significant. The MAWL decreased significantly as adjustment period increased. The participants lifted 4.2, 7.5 and 11.9% less MAWL when the lifting task was performed at 30, 40, and 50 min adjustment periods, respectively. The RPE value increased as the adjustment period increased. In addition, this paper verified that the effect of gender differences for the adjustment period and lifting frequency was not significant. Generally, this study shows that the MAWLs was overestimated by about 3.6% and 8.1% when the adjustment periods were decreased from 40-min to 30-min and 20-min, respectively.

並列關鍵字

psychophysics ； adjustment periods ； manual materials handling ； maximum acceptable weight of lift

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