Energy expenditure in low active overweight and obese children at varying treadmill grades

Thumbnail
View/Open
Issue date
2015-02-01
Author
Serra Payà, Noemí
Ensenyat Solé, Assumpta
Real, Jordi
Blanco Nespereira, Alfonso
Suggested citation
Serra Payà, Noemí; Ensenyat Solé, Assumpta; Real, Jordi; Blanco Nespereira, Alfonso; . (2015) . Energy expenditure in low active overweight and obese children at varying treadmill grades. Pediatric Exercise Science, 2015, vol. 27, num. 1, p. 57-66. https://doi.org/10.1123/pes.2013-0111.
Impact

Google Scholar logo  Google Scholar
Share
Export to Mendeley
Metadata
Show full item record
Abstract
This study aimed to evaluate differences between low active overweight and obese children in terms of energy expenditure (EE), ventilation (VE), and cardiac response during graded submaximal treadmill testing at constant speed. Methods: We categorized 20 children into two weight groups according to the International Obesity Task Force criteria: overweight (n=10; age=9.7 ±1.34 years) and obese (n=10; age=10.4±1.4 years). Children performed treadmill testing at a constant speed (1.53 m·s-1 ) and increasing grade (0%, 4%, and 8%). every 3 min. Results: The EE across all grades was significantly higher (p<0.001) in obese than in overweight children. Differences at each grade disappeared when EE was adjusted by body mass; however, several differences remained when the EE was adjusted by fat-free mass or body surface area. The increase in EE with increasing grade was greater in obese children (effect size between 0% and 8% for EE was 1.17). BMI z-score and fat mass (kg) were the main predictors of EE (Kcal·min-1 ) and contributed to explaining 66%, 70% and 83.4% of the variance in EE at 0%, 4% and 8% gradients respectively. Conclusion: We suggest that when assessing EE response to exercise, the degree of obesity should be taken into consideration.
URI
http://hdl.handle.net/10459.1/58094
DOI
https://doi.org/10.1123/pes.2013-0111
Is part of
Pediatric Exercise Science, 2015, vol. 27, num. 1, p. 57-66
Collections