Validity and Reliability Analysis of Cooper's 12-Minute Run and the Multistage Shuttle Run in Healthy Adults

• Autores: Jason T. Penry, Anthony R. Wilcox, Joonkoo Yun
• Localización: Journal of strength and conditioning research: the research journal of the NSCA, ISSN 1064-8011, Vol. 25, Nº. 3, 2011, págs. 597-605
• Idioma: inglés
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• Dialnet Métricas: 6 Citas
• Resumen

  • Field tests are a practical method to assess aerobic fitness, but they demonstrate greater error variability than laboratory tests. The principal goals of this study were to identify potential sources of systematic error in 2 commonly used field tests (Cooper's 12-minute run [12MR] and the multistage shuttle run [MSR]) and estimate the reliability of the 2 tests from these data. In addition, criterion-related validity evidence for field tests was evaluated via Bland-Altman plots. To assess trends across test protocol and test trials, 60 subjects (mean age = 21.8 ± 3.6 years) completed 6 test trials, including 3 trials of each field test. Of these 60 individuals, 21 volunteers completed an incremental treadmill run and expired gas analysis (TR) that was used to establish criterion-related validity evidence for the 2 field tests. G-study analysis of the field test data returned a high reliability coefficient ([script phi] = 0.96), with the largest amount of systematic error variance (4.3%) attributable to an interaction between subjects and test occasions. The MSR predicted [latin capital V with dot above]o2max scores lower than those measured in the laboratory setting (p < 0.01), whereas 12MR and TR scores were not different (p > 0.05). However, Bland-Altman plots showed the 12MR to underestimate [latin capital V with dot above]o2max scores at lower [latin capital V with dot above]o2max values and overestimate [latin capital V with dot above]o2max scores at higher values, a trend not observed in the MSR data. These data suggest high overall reliability for [latin capital V with dot above]o2max field tests in young, healthy individuals. Nevertheless, test administrators must use caution when attempting to use field test data to predict criterion [latin capital V with dot above]o2max scores. The MSR appears to be a more useful tool than the 12MR because of a consistent mean bias across fitness levels.