Effects of a twelve-week exercise intervention on subsequent compensatory behaviours in adolescent girls: an exploratory study
Abstract
Purpose: Chronic exercise programmes can induce adaptive compensatory behavioural responses through increased energy intake (EI) and/or decreased free-living physical activity in adults. These responses can negate the benefits of an exercise-induced energy deficit; however, it is unclear whether young people experience similar responses. This study examined whether exercise-induced compensation occurs in adolescent girls. Methods: Twenty-three adolescent girls, heterogeneous for weight status, completed the study. Eleven, 13-year-old adolescent girls completed a twelve-week supervised exercise intervention (EX). Twelve body size matched girls comprised the non-exercise control group (CON). Body composition, EI, free-living energy expenditure (EE) and peak oxygen uptake (V ̇O_2) were measured repeatedly over the intervention. Results: Laboratory EI (EX: 9027, 9610, 9243 kJd-1 and CON: 9953, 9770, 10052 kJd-1 at 0, 12 and 18 weeks respectively) (ES = 0.26, P = 0.46) and free living EI (EX: 7288, 6412, 5273, 4916 kJd-1 and CON: 7227, 7128, 6470, 6337 kJd-1 at 0, 6, 12 and 18 weeks respectively) (ES ≤ 0.26, P = 0.90) did not change significantly over time and were similar between groups across the duration of the study. Free-living EE was higher in EX than CON (13295 vs. 12115 kJd-1, ES ≥ 0.88, P ≥ 0.16), but no significant condition by time interactions were observed (P ≥ 0.17). Conclusion: The current findings indicate that compensatory changes in EI and EE behaviours did not occur at a group level within a small cohort of adolescent girls. However, analysis at the individual level highlights large inter-individual variability in behaviours, which suggest a larger study may be prudent to extend this initial exploratory research.Citation
Massie, R., Smallcombe, J., & Tolfrey, K. (2019). Effects of a 12-Week Exercise Intervention on Subsequent Compensatory Behaviors in Adolescent Girls: An Exploratory Study, Pediatric Exercise Science, 31(4), pp 495-504. DOI: https://doi.org/10.1123/pes.2019-0012Publisher
Human Kinetics Publishers Inc.Journal
Pediatric Exercise ScienceType
Journal articleLanguage
enDescription
This is an accepted manuscript of an article published by Human Kinetics Publishers Inc. in Pediatric Exercise Science on 19/07/2019, available online: https://doi.org/10.1123/pes.2019-0012 The accepted version of the publication may differ from the final published version.ISSN
0899-8493ae974a485f413a2113503eed53cd6c53
10.1123/pes.2019-0012
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