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首页> 外文期刊>Applied Ergonomics >Physiological and psychophysical responses in handling maximum acceptable weights under different footwear-floor friction conditions
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Physiological and psychophysical responses in handling maximum acceptable weights under different footwear-floor friction conditions

机译：在不同的鞋底摩擦条件下处理最大可接受重量时的生理和心理生理反应

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A study on combined manual materials-handling tasks performed on floors under three friction levels was conducted. Eight male subjects participated in the study. The maximum acceptable weight of handling, including lifting, carrying for 3 m, lowering, and walking 3 m back at twice per minute was determined. The subject then performed the same tasks for 10 min. Heart rate, Vo{sub}2, energy efficiency, perceived sense of slip, and rating of perceived exertion for whole body strain were measured. The results showed that the effects of friction level on the maximum acceptable weights of handling, perceived sense of slip, Vo{sub}2, and energy efficiency were statistically significant (p ≤ 0.0006). As the friction level increased from low to high, the maximum acceptable weights of handling increased from 8.15 to 9.34 kg. The energy efficiency on the low friction condition (12.58 kg/L/min) was significantly lower than those of the medium (15.73 kg/L/min) and high (15.38 kg/L/min) friction conditions. The perceived sense of slip was the highest (5.44) on the low-friction condition, followed by the medium-friction condition (3.58), and last the high-friction condition (1.84). The implication of this study was that friction level should be regarded as one of the major environmental factors in designing MMH tasks as it affected both physiological and psychophysical responses of the subjects. Low-friction footwear-floor interface should be avoided as it resulted in not only high scores of perceived sense of slip but also in low-energy efficiency utilized in the body.
机译：研究了在三个摩擦等级下在地板上执行的组合手动物料处理任务。八名男性受试者参加了这项研究。确定了最大可接受的搬运重量，包括每分钟两次抬起，搬运3 m，降低和向后行走3 m。然后，对象执行相同的任务10分钟。测量心率，Vo {sub} 2，能量效率，感觉到的滑倒感以及感觉到的全身疲劳程度。结果表明，摩擦水平对最大可接受操作重量，感觉到的滑移感，Vo {sub} 2和能量效率的影响在统计学上具有显着意义（p≤0.0006）。随着摩擦水平从低到高增加，最大可接受的搬运重量从8.15千克增加到9.34千克。低摩擦条件（12.58 kg / L / min）下的能量效率显着低于中摩擦条件（15.73 kg / L / min）和高摩擦条件（15.38 kg / L / min）下的能量效率。在低摩擦条件下，感觉到的滑移感最高（5.44），其次是中摩擦条件（3.58），最后是高摩擦条件（1.84）。这项研究的意义在于，在设计MMH任务时，摩擦水平应被视为主要的环境因素之一，因为它影响受试者的生理和心理生理反应。应避免使用低摩擦的鞋底接触面，因为它不仅会导致较高的感知滑移感，而且会导致人体使用低能量效率。

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