Weller J J, el-Gamal F M, Parker L, Reed J W, Cotes J E
University Department of Occupational Health, Newcastle upon Tyne, UK.
Br J Ind Med. 1988 Aug;45(8):532-7. doi: 10.1136/oem.45.8.532.
A total of 345 shipyard workers (aged 23 to 47) volunteered to perform progressive exercise on a cycle ergometer (15 W/min increments) up to the symptom limited maximum. The results were used to obtain maximal oxygen uptake (nO2 max), the oxygen uptake at a respiratory exchange ratio of unity (nO2 at R1.0), and cardiac frequency at an oxygen uptake of 45 mmol/min (fC45). In this group 156 men (45% of initial population) attained nO2 max as defined, 108 (31%) withdrew or did not exercise maximally, and 49 (14%) had transient electrocardiographic abnormalities. For the 156 men extrapolation of the relation of cardiac frequency on oxygen uptake to the predicted maximal cardiac frequency resulted in overestimation of nO2 max by 9.6%. nO2 Max per kg body mass was negatively correlated with body mass. nO2 Max (mean value 130.6 mmol/min) was described in terms of age, fat free mass, smoking (yes or no), and level of habitual activity (rated 1 to 4): the standard error of the estimate (SEE) was 17.3 mmol/min (R2 0.42); the equation was suitable for reference values. For estimating the nO2 max of individual men an empirical relation based on nO2 at R1.0, fC45, fat free mass, and % body fat had an SEE of 12.1 mmol/min (R2 0.67). Seventy six per cent of men (88% of those who exercised) attained nO2 at R1.0 (oxygen uptake approximately 73% of maximum). Thus the nO2 max could be estimated in a higher proportion of men than could achieve nO2 max. The estimate is appropriate for assessing exercise capacity in relation to employment.(ABSTRACT TRUNCATED AT 250 WORDS)
共有345名造船厂工人（年龄在23至47岁之间）自愿在自行车测力计上进行递增运动（以每分钟15瓦的增量），直至症状限制的最大值。结果用于获取最大摄氧量（VO₂ max）、呼吸交换率为1时的摄氧量（R1.0时的VO₂）以及摄氧量为45 mmol/min时的心率（fC45）。在该组中，156名男性（占初始人群的45%）达到了规定的VO₂ max，108名（31%）退出或未进行最大程度运动，49名（14%）有短暂心电图异常。对于这156名男性，将心率与摄氧量的关系外推至预测的最大心率会导致VO₂ max高估9.6%。每千克体重的VO₂ max与体重呈负相关。VO₂ max（平均值为130.6 mmol/min）根据年龄、去脂体重、吸烟情况（是或否）以及习惯性活动水平（评定为1至4级）进行描述：估计标准误差（SEE）为17.3 mmol/min（R² 0.42）；该方程适用于参考值。对于估计个体男性的VO₂ max，基于R1.0时的VO₂、fC45、去脂体重和体脂百分比的经验关系SEE为12.1 mmol/min（R² 0.67）。76%的男性（88%进行运动的男性）达到了R1.0时的VO₂（摄氧量约为最大值的73%）。因此，能够估计VO₂ max的男性比例高于能够达到VO₂ max的男性比例。该估计适用于评估与就业相关的运动能力。（摘要截取自250字）
