|Title: ||Resting metabolic rate in obese and nonobese Chinese Singaporean boys aged 13–15 y1–3|
|Citation: ||American Journal of Clinical Nutrition, 74: 369-373|
|Publisher: ||American Society for Nutrition|
|Journal: ||American Journal of Clinical Nutrition|
|Issue Date: ||2001 |
|Additional Links: ||http://www.ajcn.org/cgi/search?sortspec=relevance&author1=nevill&fulltext=&pubdate_year=&volume=&firstpage=|
|Abstract: ||Background: Previous studies investigating the hypothesis that
a low resting metabolic rate (RMR) is a cause of obesity yielded
discrepant findings. Two explanations for these findings are the
use of imprecise methods to determine obesity and a failure to
control for differences in fat mass (FM) and fat-free mass (FFM)
when comparing RMR values.
Objective: This study tested the hypothesis that RMR is lower in
obese than in nonobese boys (with the use of precise methods to
quantify body fatness and with adjustment for differences in both
FM and FFM).
Design: Forty Chinese Singaporean boys aged 12.8–15.1 y were
recruited. Boys were classified as obese (n = 20) or nonobese
(n = 20) on the basis of their adiposity index (ratio of FM to
FFM: >0.60 = obese, <0.40 = nonobese) determined by dualenergy
X-ray absorptiometry. RMR was determined by using
indirect calorimetry. RMR values were compared by using both
linear (analysis of covariance) and log-linear (analysis of covariance
with log-transformed data) regression to control for differences
in FM and FFM.
Results: Age, height, and FFM did not differ significantly
between groups. Body mass was 13 kg greater and FM was 16 kg
greater in the obese boys than in the nonobese boys (P < 0.001).
After control for FFM and FM, RMR did not differ significantly
between the groups.
Conclusion: When body composition is appropriately controlled
for, RMR does not differ significantly between obese and
|Keywords: ||Resting metabolic rate|
Chinese Singaporean boys
Analysis of covariance
Dual-energy X-ray absorptiometry
|Appears in Collections: ||Sport, Exercise and Health Research Group|
Learning and Teaching in Sport, Exercise and Performance
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