Lemon P W, Hagberg J M, Hermiston R T
Can J Appl Sport Sci. 1980 Jun;5(2):64-8.
Various situations present a challenge to determine oxygen uptake (VO2) accurately simply because of the restrictions imposed by the equipment employed. This investigation was undertaken to 1) compare a select number of recovery VO2 measurements with respect to their accuracy in estimating actual exercise VO2 and 2) to determine whether absolute workload or VO2max affect this relationship. Fifteen subjects [8 highly trained (HT), VO2max +/- SD = 70.2 +/- 3.5 ml/kg . min-1 and 7 untrained (UT), VO2max = 49.7 +/- 3.8 ml/kg . min-1] completed a number of 5 min workbouts on a bicycle ergometer at 25-70% VO2max (VO2 = .899--3.879 l . min-1). VO2 and VCO2 (l . min-1) were monitored continuously throughout the exercise and for 5 min of recovery via a breath-by-breath system. The results indicated that 1) exercise VO2 +/- Sy.x can be estimated from several recovery collection periods, the first breath y = .953X + .441 +/- .319, the first two breaths y = 1.046X + .327 +/- .270, the first three breaths y = 1.089X + .260 +/- .241, and the second three breaths y = 1.101X + .387 +/- .234, and 2) VO2max does not affect this relationship (p greater than 0.05) while increasing absolute workload produces a greater exercise VO2 underestimation (p less than 0.05). It was concluded that using this method exercise VO2 can be estimated with reasonable accuracy (Sy.x = .234--.319, r = .92--.94, p less than 0.01).
由于所使用设备的限制，各种情况都给准确测定摄氧量（VO2）带来了挑战。进行这项研究的目的是：1）比较若干恢复阶段VO2测量值在估算实际运动VO2方面的准确性；2）确定绝对工作量或最大摄氧量（VO2max）是否会影响这种关系。15名受试者[8名训练有素者（HT），VO2max±标准差 = 70.2±3.5毫升/千克·分钟-1，7名未受过训练者（UT），VO2max = 49.7±3.8毫升/千克·分钟-1]在自行车测力计上以VO2max的25%至70%（VO2 = 0.899 - 3.879升·分钟-1）完成了多次5分钟的运动周期。在整个运动过程以及恢复的5分钟内，通过逐次呼吸系统持续监测VO2和VCO2（升·分钟-1）。结果表明：1）运动VO2±Sy.x可以根据几个恢复收集阶段进行估算，第一口气y = 0.953X + 0.441±0.319，前两口气y = 1.046X + 0.327±0.270，前三口气y = 1.089X + 0.260±0.241，以及后三口气y = 1.101X + 0.387±0.234；2）VO2max不影响这种关系（p大于0.05），而绝对工作量的增加会导致对运动VO2的低估程度更大（p小于0.05）。得出的结论是，使用这种方法可以以合理的准确性估算运动VO2（Sy.x = 0.234 - 0.319，r = 0.92 - 0.94，p小于0.01）。
