title: Race influences the relationship between aerobic power and heart rate recovery.
abstract: OBJECTIVE
  This investigation examined the association between aerobic fitness, race, and heart rate recovery.
  
  
  METHODS
  Forty white and 40 black subjects participated in the study and were group matched based on age and maximal oxygen consumption (VO(2max)) which was determined via a maximal graded exercise test on a treadmill. Heart rate recovery was evaluated at 1-minute (HRR1) and at 2-minutes (HRR2) during an active cool-down period. The subjects were divided by race and whether they were above (A) or below (B) the referenced 50th percentile for VO(2max) for men age 20 - 29 years.
  
  
  RESULTS
  When evaluating each race separately, the white men who were in the A group had significantly faster HRR1 (18.2 ± 5.9 beats.min-1 in A versus 16.7 ± 6.0 beats.min-1 in B) and HRR2 (40.9 ± 10.3 beats.min-1 in A versus 32.1 ± 8.5 beats.min-1 in B) compared to the white men in the B group. However, there was no significant difference in either HRR1 (18.2 ± 5.9 beats.min-1 in A versus 16.7 ± 6 beats.min-1 in B) or HRR2 (43.1 ± 10.3 beats.min-1 in A versus 44.4.6 ± 8.2 beats.min-1 in B) between the A and B groups in the black men. The only significant correlation existed between VO(2max) and HRR2 in the white subjects (r=0.33, P<0.05).
  
  
  CONCLUSIONS
  The results of this study suggest that HRR is associated with aerobic fitness in white men but not in black men.
authors.affiliation: Human Performance Laboratory Auburn University MontgomeryMontgomery, AL, USA - mesco@aum.edu.
authors.forename: M R
authors.initials: MR
authors.lastname: Esco
authors.forename: H N
authors.initials: HN
authors.lastname: Williford
mesh_terms: D044383:Black People; D003430:Cross-Sectional Studies; D005080:Exercise Test; D006339:Heart Rate / Q000502:physiology*; D006801:Humans; D008297:Male; D016555:Matched-Pair Analysis; D010101:Oxygen Consumption / Q000502:physiology; D010809:Physical Fitness / Q000502:physiology*; D020127:Recovery of Function / Q000502:physiology*; D044465:White People; D055815:Young Adult