Laukkanen R, Oja P, Pasanen M, Vuori I
Urho Kaleva Kekkonen Institute for Health Promotion Research, Tampere, Finland.
Int J Obes Relat Metab Disord. 1992 Apr;16(4):263-8.
In our earlier study a regression model, with heart rate and time in a 2 km fast walk, body mass index (BMI) or weight (kg) and age as explanatory variables, explained 75% of the variation in the VO2max of adults with normal weight. The present study was designed to test whether the prediction model based on a 2km fast walk and simple site measurements is valid in estimating the VO2max of overweight men and women and to compare 1km and 2km test distances. Forty-five women and thirty-two men, BMI 27-40, aged 20-65 years, with no cardiorespiratory or musculoskeletal restrictions for a maximal stress test and fast walk, were studied. The VO2max was determined in an uphill walk to maximal effort on a treadmill. Two walking tests, 1km and 2km, were conducted on a flat dirt road. Heart rate was recorded during the walks, and the mean rate during the last 30 seconds was used in the model. The correlation coefficients between the measured and predicted VO2max in the 2km test were 0.77 for the women and 0.75 for men, corrected for body weight (ml/kg/min), and 0.77 and 0.69 respectively in absolute values (1/min). These results suggest that the 2km walk test previously developed for adults within normal weight limits is a reasonably valid test of the cardiorespiratory fitness of overweight, but otherwise healthy, women and men.
在我们早期的研究中，一个以心率、2公里快走时间、体重指数（BMI）或体重（千克）以及年龄作为解释变量的回归模型，解释了体重正常成年人最大摄氧量（VO2max）变化的75%。本研究旨在测试基于2公里快走和简单部位测量的预测模型在估计超重男性和女性的VO2max方面是否有效，并比较1公里和2公里的测试距离。对45名女性和32名男性进行了研究，他们的BMI为27 - 40，年龄在20 - 65岁之间，没有心肺或肌肉骨骼方面的限制以进行最大应激测试和快走。VO2max是在跑步机上进行上坡快走至最大努力时测定的。在平坦的土路上进行了1公里和2公里的两次步行测试。步行过程中记录心率，并将最后30秒的平均心率用于模型。在2公里测试中，测量的和预测的VO2max之间的相关系数，以体重校正后（毫升/千克/分钟），女性为0.77，男性为0.75；绝对值（1/分钟）分别为0.77和0.69。这些结果表明，先前为体重正常范围内的成年人开发的2公里步行测试，对于超重但其他方面健康的女性和男性的心肺适能是一个相当有效的测试。
