Rintala P, Dunn J M, McCubbin J A, Quinn C
Department of Exercise and Sport Science, Oregon State University, Corvallis 97331-6802.
Med Sci Sports Exerc. 1992 Aug;24(8):941-5.
The purpose of this study was to validate a field test of cardiorespiratory fitness for men with mental retardation. The subjects were 19 healthy young men (26 +/- 6 yr) with moderate mental retardation (IQ = 48 +/- 11). Each subject underwent a maximal treadmill test after a three-phase familiarization process. Each subject also completed a 1-mile walk test twice (Rockport Fitness Walking Test = RFWT). The correlation coefficients between peak VO2 on the treadmill and the two 1-mile walks varied from 0.78 to 0.83. When weight, height, age, heart rates of 1-mile walks, and their combinations were held constant, the correlations were strengthened. Using multiple correlation analysis the best equation for predicting peak VO2 was: Peak VO2 = 101.92 - 2.356(mile-1 time) - 0.42(weight). This model accounted for 85% of total variance. The standard error of estimate was 4.06 ml.kg-1.min-1. The test-retest reliability of the RFWT for the 19 subjects used in this study was very high (R = 0.97). This finding suggests that the RFWT is a valid and reliable field test for this population and appears to be a valid indicator of cardiorespiratory fitness for these men with mental retardation.
本研究的目的是验证一项针对智力发育迟缓男性的心肺适能现场测试。受试者为19名健康的年轻男性（26±6岁），患有中度智力发育迟缓（智商=48±11）。在经过三个阶段的熟悉过程后，每位受试者都进行了一次最大跑步机测试。每位受试者还完成了两次1英里步行测试（罗克波特健身步行测试=RFWT）。跑步机上的峰值摄氧量与两次1英里步行测试结果之间的相关系数在0.78至0.83之间。当体重、身高、年龄、1英里步行时的心率及其组合保持不变时，相关性增强。使用多重相关分析，预测峰值摄氧量的最佳方程为：峰值摄氧量=101.92 - 2.356（1英里用时）- 0.42（体重）。该模型解释了总方差的85%。估计标准误差为4.06毫升·千克-1·分钟-1。本研究中使用的19名受试者的RFWT重测信度非常高（R = 0.97）。这一发现表明，RFWT对该人群是一项有效且可靠的现场测试，似乎是这些智力发育迟缓男性心肺适能的有效指标。
