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. 2011 Jul-Sep;55(3):221-6.
Direct estimation of cardiorespiratory fitness in terms of VO2max is restricted within well equipped laboratory. Eighty four (84) sedentary male university students (Age 22.77 +/- 1.73 years, Body height 167.73 +/- 4.07 cm and Body mass 58.25 +/- 4.02 kg) of same socio-economic background were recruited from students of University of Calcutta, Kolkata, India to validate the applicability of 20 meter shuttle run test (SRT) for indirect estimation of VO2max in young male sedentary university students of Kolkata, India. They were further asigned to "study group" (N = 54) 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 with a gap of four days in between the tests. 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. VO2max was significantly correlated with age (r = 0.70, P < 0.001), body mass (r = 0.64, P < 0.001), body height (r = 0.58, P < 0.001), speed (r = 0.94, P < 0.001) and PVO2max (r = 0.89, P < 0.001). Modified norms in the form of simple and multiple regression equations have been computed. Our results suggest that SRT in its original form cannot be applied in the young males of Kolkata, India, due to its poor agreement with the direct method but is applicable with the modified equations. The SEE of these currently proposed norms arc substantially small enough to recommend the modified equations in the studied population to evaluate VO2max.
通过最大摄氧量（VO₂max）直接估计心肺适能受到设备完善的实验室的限制。从印度加尔各答的加尔各答大学学生中招募了84名社会经济背景相同的久坐不动的男性大学生（年龄22.77±1.73岁，身高167.73±4.07厘米，体重58.25±4.02千克），以验证20米穿梭跑测试（SRT）在印度加尔各答年轻久坐不动的男性大学生中间接估计VO₂max的适用性。他们被进一步分为“研究组”（N = 54），在该组中测试SRT的现有实验方案，以及“验证组”（N = 30），在该组中验证修改后的方程。在两次测试之间间隔四天，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和间接预测的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，在所研究的人群中，当前SRT方法应用的置信水平较低。VO₂max与年龄（r = 0.70，P <0.001）、体重（r = 0.64，P <0.001）、身高（r = 0.58，P <0.001）、速度（r = 0.94，P <0.001）和PVO₂max（r = 0.89，P <0.001）显著相关。已经计算了简单和多元回归方程形式的修改后的规范。我们的结果表明，由于SRT原始形式与直接方法的一致性较差，因此不能应用于印度加尔各答的年轻男性，但修改后的方程适用。这些当前提出的规范的估计标准误差（SEE）足够小，足以推荐在研究人群中使用修改后的方程来评估VO₂max。
