ABSTRACT
Background: The 20-metre multistage shuttle run test is a useful method for the regular monitoring of aerobic fitness. However, the validity of the test should be established in the particular population prior to application. The aim of the study was to validate the applicability of the 20-metre multistage shuttle run test in non-athlete, girls from Kolkata, India. Methods: Thirty-six untrained girls from different schools in Kolkata (age range 14–16 years) were recruited for the study. Direct estimation of cardiorespiratory endurance (VO2max) comprised treadmill exercise followed by expired gas analysis using Scholander micro-gas analyser. VO2max was indirectly predicted by the 20-metre multistage shuttle run test. Results: The difference between the mean (SD) VO2max values of the direct measurement, 32.91 (2.66) ml.kg-1.min-1, and the 20-metre multistage shuttle run test, 33.79 (2.56) ml.kg-1.min-1, was statistically significant (P < 0.01). However, limits of agreement analysis suggested that the 20-metre multistage shuttle run test can be applied for use with the studied population. Intra-class correlation coefficients also suggested good reliability of the 20-metre multistage shuttle run data. Conclusion: The results suggest that the use of the 20-metre multistage shuttle run test for the prediction of VO2max is justified in the studied population. For better prediction of VO2max, a new equation has been developed based on the present data for untrained girls from Kolkata.
ABSTRACT
Validity of the 20-meter multi stage shuttle run test [20-m MST] has not been studied in Nepalese population. The purpose of this study was to validate the applicability of the 20-m MST in Nepalese adult females. Forty female college students [age range, 20.42 tilde 24.75 years] from different colleges of Nepal were recruited for the study. Direct estimation of VO[2] max comprised treadmill exercise followed by expired gas analysis by scholander micro-gas analyzer whereas VO[2] max was indirectly predicted by the 20-m MST. The difference between the mean [ +/- SD] VO[2] max values of direct measurement [VO[2] max = 32.78 +/- 2.88 ml/kg/min] and the 20-m MST [SPVO[2] max = 32.53 +/- 3.36 ml/kg/min] was statistically insignificant [P>0.1]. Highly significant correlation [r=0.94, P<0.01] existed between the maximal speed of the 20-m MST and VO[2] max. Limits of agreement analysis also suggest that the 20-m MST can be applied for the studied population. The results of limits of agreement analysis suggest that the application of the present form of the 20-m MST may be justified in the studied population. However, for better prediction of VO[2] max, a new equation has been computed based on the present data to be used for female college students of Nepal