title: OMNI scale perceived exertion at ventilatory breakpoint in children: response normalized.
abstract: OBJECTIVE
  The Children's OMNI Scale of Perceived Exertion was used to identify a response normalized rating of perceived exertion (RPE)-Overall, RPE-Legs, and RPE-Chest that corresponds to the ventilatory breakpoint (Vpt) in 8- to 12-yr-old female and male children.
  
  
  METHODS
  Subjects were a priori stratified into two fitness groups on the basis of peak oxygen uptake (VO2 peak): average (A) (41.0-49.0 mL x kg(-1) x min(-1); N = 24) and above average (AA) (50.0-58.0 mL x kg(-1) x min(-1); N = 24). Vpt was determined by a progressive cycle ergometer protocol to VO2 peak.
  
  
  RESULTS
  A gender effect was not observed for any descriptive or dependent variable. Mean VO2peak for the A group was 1.72 L x min(-1) and for the AA group 2.04 L x min(-1). Vpt corresponded to 64.0% VO2 peak for A and 74.0% VO2peak for AA. RPE-Overall (mean A and AA, 6.1), RPE-Legs (mean A and AA, 7.2), and RPE-Chest (mean A and AA, 4.5) did not differ between the fitness groups.
  
  
  CONCLUSIONS
  Findings indicated that undifferentiated and differentiated RPE-Vpt were similar between female and male children who varied in VO2peak and Vpt. A comparatively stable RPE-Vpt for 8- to 12-yr-old children that vary in VO2peak and Vpt indicates a group normalized perceptual response.
authors.affiliation: Center for Exercise and Health-Fitness Research, Department of Health and Physical Education, University of Pittsburgh, Pittsburgh, PA 15261, USA. rrobert@pitt.edu
authors.forename: R J
authors.initials: RJ
authors.lastname: Robertson
authors.forename: F L
authors.initials: FL
authors.lastname: Goss
authors.forename: N
authors.initials: N
authors.lastname: Boer
authors.forename: J D
authors.initials: JD
authors.lastname: Gallagher
authors.forename: T
authors.initials: T
authors.lastname: Thompkins
authors.forename: K
authors.initials: K
authors.lastname: Bufalino
authors.forename: G
authors.initials: G
authors.lastname: Balasekaran
authors.forename: C
authors.initials: C
authors.lastname: Meckes
authors.forename: J
authors.initials: J
authors.lastname: Pintar
authors.forename: A
authors.initials: A
authors.lastname: Williams
mesh_terms: D015308:Anaerobic Threshold / Q000502:physiology*; D000704:Analysis of Variance; D002648:Child; D005080:Exercise Test / Q000592:standards*; D005260:Female; D006339:Heart Rate; D006801:Humans; D007866:Leg / Q000502:physiology; D008297:Male; D010101:Oxygen Consumption / Q000502:physiology*; D005082:Physical Exertion / Q000502:physiology*; D010809:Physical Fitness / Q000502:physiology; D012016:Reference Values; D015203:Reproducibility of Results; D012737:Sex Factors; D013909:Thorax / Q000502:physiology