Cureton K J, Sparling P B, Evans B W, Johnson S M, Kong U D, Purvis J W
Med Sci Sports. 1978 Fall;10(3):194-9.
To experimentally investigate the effect of excess body weight or fat on maximal oxygen uptake (Vo2 max) and distance running performance, the metabolic response to maximal and submaximal treadmill running and the 12-min run performance were measured in six subjects under each of four added-weight (AW) conditions: normal body weight and 5, 10, and 15% additional external weight, added to the trunk. AW was found to systematically and significantly decrease Vo2 max expressed relative to the total weight carried (ml/min.dg TW), maximal treadmill (TM) run time and 12-min run distance, but not to systematically affect Vo2 max (1/min) or Vo2 max (ml/min.kg FFW). An increase of 5% AW was found, on the average, to decrease Vo2 max (ml/min.kg TW) 2.4 ml, the TM run time 35 sec and the 12-min run distance 89 m. These decreases were a direct consequence of the increased energy cost of running at submaximal speeds. It was concluded that changes in excess body weight can influence Vo2 max expressed relative to body weight and distance run performance independent of any change in cardiovascular capacity. Failure to distinguish the metabolic effects of body fatness from the influence of cardiorespiratory capacity may result in misleading interpretation of distance run test scores.
为了通过实验研究超重或肥胖对最大摄氧量（Vo2 max）和长跑成绩的影响，在四种额外负重（AW）条件下，分别对六名受试者进行了测量，包括最大和次最大跑步机跑步的代谢反应以及12分钟跑成绩：正常体重以及在躯干上额外增加5%、10%和15%的外部重量。结果发现，相对于所携带的总体重（ml/min.dg TW）、最大跑步机（TM）跑步时间和12分钟跑距离而言，AW会系统性且显著地降低Vo2 max，但不会系统性地影响Vo2 max（1/min）或Vo2 max（ml/min.kg FFW）。平均而言，发现AW增加5%会使Vo2 max（ml/min.kg TW）降低2.4 ml，TM跑步时间缩短35秒，12分钟跑距离减少89米。这些降低是次最大速度跑步时能量消耗增加的直接结果。得出的结论是，超重的变化会影响相对于体重的Vo2 max和跑步距离成绩，而与心血管能力的任何变化无关。未能区分体脂的代谢影响和心肺能力的影响可能会导致对长跑测试分数的误导性解释。
