Jackson A S, Blair S N, Mahar M T, Wier L T, Ross R M, Stuteville J E
Cardiopulmonary Laboratory, NASA/Johnson Space Center, Houston, TX 77058.
Med Sci Sports Exerc. 1990 Dec;22(6):863-70. doi: 10.1249/00005768-199012000-00021.
The purpose of this study was to develop functional aerobic capacity prediction models without using exercise tests (N-Ex) and to compare the accuracy with Astrand single-stage submaximal prediction methods. The data of 2,009 subjects (9.7% female) were randomly divided into validation (N = 1,543) and cross-validation (N = 466) samples. The validation sample was used to develop two N-Ex models to estimate VO2peak. Gender, age, body composition, and self-report activity were used to develop two N-Ex prediction models. One model estimated percent fat from skinfolds (N-Ex %fat) and the other used body mass index (N-Ex BMI) to represent body composition. The multiple correlations for the developed models were R = 0.81 (SE = 5.3 ml.kg-1.min-1) and R = 0.78 (SE = 5.6 ml.kg-1.min-1). This accuracy was confirmed when applied to the cross-validation sample. The N-Ex models were more accurate than what was obtained from VO2peak estimated from the Astrand prediction models. The SEs of the Astrand models ranged from 5.5-9.7 ml.kg-1.min-1. The N-Ex models were cross-validated on 59 men on hypertensive medication and 71 men who were found to have a positive exercise ECG. The SEs of the N-Ex models ranged from 4.6-5.4 ml.kg-1.min-1 with these subjects.(ABSTRACT TRUNCATED AT 250 WORDS)
本研究的目的是开发不使用运动测试（N-Ex）的功能性有氧能力预测模型，并将其准确性与阿斯特兰德单级次最大预测方法进行比较。2009名受试者（9.7%为女性）的数据被随机分为验证样本（N = 1543）和交叉验证样本（N = 466）。验证样本用于开发两个N-Ex模型以估计最大摄氧量（VO2peak）。性别、年龄、身体成分和自我报告的活动被用于开发两个N-Ex预测模型。一个模型根据皮褶厚度估计体脂百分比（N-Ex %fat），另一个使用体重指数（N-Ex BMI）来代表身体成分。所开发模型的多重相关系数分别为R = 0.81（标准误 = 5.3 ml·kg-1·min-1）和R = 0.78（标准误 = 5.6 ml·kg-1·min-1）。应用于交叉验证样本时，该准确性得到了证实。N-Ex模型比从阿斯特兰德预测模型估计的VO2peak更准确。阿斯特兰德模型的标准误范围为5.5 - 9.7 ml·kg-1·min-1。N-Ex模型在59名服用降压药的男性和71名运动心电图呈阳性的男性中进行了交叉验证。这些受试者的N-Ex模型标准误范围为4.6 - 5.4 ml·kg-1·min-1。（摘要截断于250字）
