PREDICTING ENERGY-EXPENDITURE WITH LOADS WHILE STANDING OR WALKING VERY SLOWLY
PREDICTING ENERGY-EXPENDITURE WITH LOADS WHILE STANDING OR WALKING VERY SLOWLY
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DOI：
10.1152/jappl.1977.43.4.577
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发表时间：
1977-01-01
影响因子：
3.3
通讯作者：
GOLDMAN, RF
中科院分区：
文献类型：
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作者：
PANDOLF, KB;GIVONI, B;GOLDMAN, RF
六名男子每人背着32、40和50公斤的背包，同时以1.0、0.8、0.6、0.4和0.2米/秒的速度行走，以将速度范围扩展到静止水平。还研究了10名男性背着0、10、30或50 kg背包站立的代谢成本，以评估站立时负重的能量消耗。能量消耗随着外部负荷（站立和行走）而增加。非常缓慢的步行不会增加低效率; M [代谢率]随着速度的接近而平稳下降。现在涵盖站立和整个步行速度范围的修正预测公式具有形式M = 1.5W + 2.0（W + L）（L/W）2 + v。（W + L）[1.5V2 + 0.35VG]其中M =代谢率，瓦特; W =受试者体重，kg; L =携带的负荷，kg; V =行走速度，m/s，G =等级，%; n =地形因子（v）。= 1.0（对于跑步机）。新公式扩大了应用范围，允许调整负荷作为体重的函数，并允许更容易计算能量消耗。
Six men each carried backpack loads of 32, 40 and 50 kg while walking at 1.0, 0.8, 0.6, 0.4 and 0.2 m/s, to extend the range of speed down to the standstill level. Metabolic cost of standing with O-, 10-, 30- or 50-kg backpacks was also investigated in 10 men to evaluate the energy expenditure of load carriage while standing. Energy expenditure increased with external load, both standing and walking. No increased inefficiency occurred with very slow walking; M [metabolic rate] decreased smoothly as speed approached. The revised predictive formula which now covers standing and the whole range of walking speeds, has the form M = 1.5W + 2.0(W + L)(L/W)2 + .nu.(W + L)[1.5V2 + 0.35VG] where M = metabolic rate, watts; W = subject weight, kg; L = load carried, kg; V = speed of walking, m/s, G = grade, %; n = terrain factor (.nu. = 1.0 for treadmill). The new formula extends the range of application, allows an adjustment for load as a function of body weight and permits easier calculation of energy expenditure.