title: Agreement Between VO2peakPredicted From PACER and One-Mile Run Time-Equated Laps.
abstract: OBJECTIVE
  This study examined the agreement between estimated peak oxygen consumption (VO2peak) obtained from the Progressive Aerobic Cardiovascular Endurance Run (PACER) fitness test and equated PACER laps derived from One-Mile Run time (MR).
  
  
  METHODS
  A sample of 680 participants (324 boys and 356 girls) in Grades 7 through 12 completed both the PACER and the MR assessments. MR time was converted to PACER laps (PACER-MEQ) using previously developed conversion algorithms. Agreement between PACER and PACER-MEQ VO2peakwas examined using Pearson correlations, mean absolute percent error (MAPE), and equivalence testing procedures. Classification agreement based on health-related standards was examined using sensitivity, specificity, and Kappa statistics.
  
  
  RESULTS
  Overall agreement between estimated VO2peakobtained from the PACER and PACER-MEQ was high in boys, r(324) = .79, R2= .63, and moderate in girls, r(356) = .57, R2= .33. The MAPE for estimates obtained from PACER-MEQ was 10.3% and estimates were deemed equivalent to the PACER (43.1 ± 6.9 mL/kg/min vs. 44.6 ± 0.3 mL/kg/min). Classification agreement as illustrated by sensitivity and specificity ranged from 20.4% to 90.2% and was higher for classifications in the Healthy Fitness Zone (HFZ). Kappa statistics ranged from .14 to .51 and were also higher for the HFZ.
  
  
  CONCLUSIONS
  Equated PACER laps can be used to obtain equivalent estimates of PACER VO2peakin groups of adolescents, but some disparities can be found when students' scores are classified into the Needs Improvement Zone.
authors: a Iowa State University.|b University of Minho.
authors: Pedro F
authors: PF
authors: Saint-Maurice
authors: c The Cooper Institute.
authors: Katelin
authors: K
authors: Anderson
authors: a Iowa State University.|d University of Vermont.
authors: Yang
authors: Y
authors: Bai
authors: a Iowa State University.
authors: Gregory J
authors: GJ
authors: Welk
mesh_terms: D000293:Adolescent; D015992:Body Mass Index; D002648:Child; D005080:Exercise Test / Q000379:methods*; D005260:Female; D006801:Humans; D008297:Male; D010101:Oxygen Consumption; D010807:Physical Endurance / Q000502:physiology*; D010809:Physical Fitness; D012420:Running / Q000502:physiology*
keywords: Aerobic capacity; measurement; test equating; youth