Original articleObese Adolescents Are Less Active Than Their Normal-Weight Peers, but Wherein Lies the Difference?
Section snippets
Methods
The University of South Australia's Human Research Ethics Committee provided ethical approval for this study.
Weight status and EE
There were significant differences in estimated TDEE across weight status bands (p < .0001; Figure 1, Table 2), with obese adolescents expending 154 fewer MET.min/d than normal-weight adolescents. The TDEEs of obese adolescents were 6.4% lower than those of normal-weight adolescents. There were also significant differences across weight status categories in estimated EE associated with MVPA (p < .0001), with obese adolescents expending 174 fewer MET.min/d than normal-weight adolescents. The
Key findings
The key finding of this study was that adolescents' PAL varied with weight status. Weight status-related differences were partly because of different amounts of time devoted to MVPA, and partly because of different mixes in the types of activities constituting MVPA, with obese adolescents experiencing significantly less sport (which had a higher average intensity) and less active play. In obese adolescents, sport constituted 38% of TDEE, compared with 46% in their normal-weight peers. Virtually
Acknowledgments
This survey on which this study was based was supported by the Australian Commonwealth Department of Health and Ageing; the Department of Agriculture, Fisheries and Forestry; and by the Australian Food and Grocery Council.
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