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Journal of Obesity
Volume 2013 (2013), Article ID 384167, 7 pages
http://dx.doi.org/10.1155/2013/384167
Research Article

Effects of Adiposity and Prader-Willi Syndrome on Postexercise Heart Rate Recovery

1Department of Kinesiology, California State University, Fullerton, 800 North State College Boulevard, KHS-236, Fullerton, CA 92831, USA
2Department of Pediatrics, University of Alberta, Edmonton, AB, Canada T6G 2R7

Received 26 October 2012; Revised 21 April 2013; Accepted 23 April 2013

Academic Editor: Dénés V. Molnár

Copyright © 2013 Diobel M. Castner et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Heart rate recovery (HRR) is an indicator of all-cause mortality in children and adults. We aimed to determine the effect of adiposity and Prader-Willi Syndrome (PWS), a congenital form of obesity, on HRR. Sixteen children of normal weight (NW = body fat % ≤85th percentile, 9.4 ± 1.1 y), 18 children with obesity (OB = body fat % >95th percentile, 9.3 ± 1.1 y), and 11 PWS youth (regardless of body fat %; 11.4 ± 2.5 y) completed peak and submaximal bike tests on separate visits. HRR was recorded one minute following peak and submaximal exercises. All groups displayed similar HRR from peak exercise, while NW (54 ± 16 beats) and OB (50 ± 12 beats) exhibited a significantly faster HRR from submaximal exercise than PWS (37 ± 14 beats). These data suggest that excess adiposity does not influence HRR in children, but other factors such as low cardiovascular fitness and/or autonomic dysfunction might be more influential.