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首页> 外文期刊>Ergonomics >Effect of load position on physiological and perceptual responses during load carriage with an internal frame backpack.
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Effect of load position on physiological and perceptual responses during load carriage with an internal frame backpack.

机译:装载位置对内部框架背包装载过程中生理和知觉反应的影响。

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The purpose of this study was to determine the effect of load position in an internal frame backpack on physiological and perceptual variables. Ten female participants walked on a level treadmill for 10 min carrying 25% of their body weight in a high, central, or low position. The variables measured included oxygen consumption (VO(2)), heart rate (HR), respiratory exchange ratio (R), respiratory rate (RR), minute ventilation (VE), and rating of perceived exertion (RPE). VO(2), VE, and RPE were significantly lower in the high position (18.6 +/- 2.3 ml/kg/min, 31.7 +/- 5.0 l/min, 2.8 +/- 0.8, respectively) compared to the low position (22.2 +/- 3.0 ml/kg/min, 38.6 +/- 7.5 l/min, 3.7 +/- 1.0, respectively). HR, R, and RR did not change significantly as the load was moved from the high (129.8 +/- 16.8, 0.89 +/- 0.06, 30.3 +/- 4.2, respectively) to the low position (136.0 +/- 25.3, 0.92 +/- 0.04, 33.8 +/- 5.2, respectively). The results of this study suggest that load placement is an important factor in thephysiological and perceptual responses to load carriage, and that packing heavy items high in the backpack may be the most energy efficient method of carrying a load on the back.
机译:这项研究的目的是确定内部框架背包中的负载位置对生理和知觉变量的影响。十名女性参与者在水平,跑步机上行走10分钟,在高,中或低位置举着体重的25%。所测量的变量包括耗氧量(VO(2)),心率(HR),呼吸交换率(R),呼吸率(RR),分钟通气量(VE)和感知劳累等级(RPE)。与低位相比,高位时的VO(2),VE和RPE显着降低(分别为18.6 +/- 2.3 ml / kg / min,31.7 +/- 5.0 l / min,2.8 +/- 0.8) (分别为22.2 +/- 3.0 ml / kg / min,38.6 +/- 7.5 l / min,3.7 +/- 1.0)。当负载从高位置(分别为129.8 +/- 16.8、0.89 +/- 0.06、30.3 +/- 4.2)移至低位置(136.0 +/- 25.3)时,HR,R和RR没有明显变化。分别为0.92 +/- 0.04、33.8 +/- 5.2)。这项研究的结果表明,负载放置是影响负载运输的生理和知觉反应的重要因素,而将重物装在背包中高处可能是最节能的背负负载方法。

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