Physiological Responses to Prolonged Treadmill Walking with External Loads

摘要

The energy cost of walking while carrying external loads has been extensivelystudied (recent reviews: Roberthson 1984; Haisman 1988). It has been shown that load weight, walking velocity, and body mass, together with terrain factors such as gradient and surface, all have a direct effect on energy expenditure (Goldman and Iampietro 1962; Soule and Goldman 1972; Soule et al. 1978). As a result, equations have been derived which allow the prediction of energy expenditure from these variables (Givoni and Goldman 1971; Pandolf et al. 1977). Such predictions, in turn, can provide valuable information as to the physical severity of load carriage tasks and the potential for ensuing fatigue.