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FITNESSGRAM uses an equating method to convert Progressive AerobicCardiovascular Endurance Run (PACER) laps to One-mile run/walk (1MRW) times to estimateaerobic fitness (VO2MAX) in children. However, other prediction models can more directlyestimate VO2MAX from PACER performance. The purpose of this study was to examine theconvergent validity and relative accuracy between 1MRW and various PACER models forpredicting VO2MAX in middle school students. Aerobic fitness was assessed on 134students utilizing the 1MRW and PACER on separate testing days. Pearson correlations,Bland–Altman plots, kappa statistics, proportion of agreement, and prediction error wereused to assess associations and agreement among models. Correlation coefficients werestrong (r ≥ .80, p < .001) and error estimates were similar between comparisons.Bland–Altman plots yielded similar Limits of Agreement between 1MRW and PACER models.Fitness Zone agreement with 1MRW was moderate-to-excellent with kappa > .40 andagreement > .90. The results support that PACER models contain convergent validityand strong relative accuracy with the 1MRW model

Convergent Validity of the One-Mile Run and PACER VO2MAX Prediction Models in Middle School Students

Convergent Validity of the One-Mile Run and PACER VO_2MAX Prediction Models in Middle School Students