Bandyopadhyay Amit
Sports & Exercise Physiology Laboratory, Department of Physiology, University of Calcutta, University College of Science and Technology, 92 A. P. C. Road, Kolkata--700 009, India.
Indian J Physiol Pharmacol. 2013 Jan-Mar;57(1):77-83.
Indirect protocols for determination of cardiorespiratory fitness in terms of VO2max have been developed to avoid the complicated experimental protocol of direct VO2max estimation especially in clinical setting. 20-meter multi stage shuttle run test (SRT) is one of such indirect protocols developed in Western population. Eighty eight (88) sedentary young healthy female university students (Age 22.8 +/- 1.79 years, Body height 159.0 +/- 4.28 cm and Body mass 52.47 +/- 4.17 kg) of same socio-economic background were recruited in the study by simple random sampling from University of Calcutta, Kolkata, India to validate the applicability of SRT in the studied population. They were randomly separated into "study group" (N=58) on which the existing experimental protocol of SRT was tested and "confirmatory group" (N = 30) on which the modified equations were validated. VO2max of each participant was determined by direct procedure and indirect SRT method. The difference between the mean values of directly measured VO2max and indirectly predicted VO2max (PVO2max) in the "study group" was statistically significant (P < 0.001). Limit of agreement analysis revealed poor confidence level for application of current method of SRT in the studied population. However, VO2max was significantly correlated with age (r = 0.71, P < 0.001), body mass (r = 0.58, P < 0.001), body height (r = 0.55, P < 0.001), speed (r = 0.92, P < 0.001) and PVO2max (r = 0.89, P < 0.001). Modified norms in the form of simple and multiple regression equations were applied in the Confirmatory Group. Results suggested a good agreement of the modified equations of SRT in this population with substantially small SEE. Hence, the currently proposed modified norms are recommended to predict VO2max in the studied population.
为避免直接测定最大摄氧量（VO2max）的复杂实验方案，尤其是在临床环境中，已经开发了间接测定心肺适能的方案。20米多级往返跑测试（SRT）就是在西方人群中开发的此类间接方案之一。通过简单随机抽样从印度加尔各答的加尔各答大学招募了88名社会经济背景相同的久坐不动的年轻健康女大学生（年龄22.8±1.79岁，身高159.0±4.28厘米，体重52.47±4.17千克），以验证SRT在该研究人群中的适用性。她们被随机分为“研究组”（N = 58），对其进行SRT的现有实验方案测试，以及“验证组”（N = 30），对其修改后的方程进行验证。通过直接程序和间接SRT方法确定每个参与者的VO2max。“研究组”中直接测量的VO2max与间接预测的VO2max（PVO2max）的平均值之间的差异具有统计学意义（P < 0.001）。一致性界限分析显示，当前SRT方法在该研究人群中的应用置信水平较低。然而，VO2max与年龄（r = 0.71，P < 0.001）、体重（r = 0.58，P < 0.001）、身高（r = 0.55，P < 0.001）、速度（r = 0.92，P < 0.001）和PVO2max（r = 0.89，P < 0.001）显著相关。以简单和多元回归方程形式的修改规范应用于验证组。结果表明，该人群中SRT的修改方程具有良好的一致性，标准误相当小。因此，建议使用当前提出的修改规范来预测该研究人群中的VO2max。
