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Components and variations in daily energy expenditure of athletic and non-athletic adolescents in free-living conditions.
Br J Nutr 2000; 84(4):531-9BJ

Abstract

The objectives of the study were to determine: (1) daily energy expenditure (EE) of athletic and non-athletic adolescents of both sexes in free-living conditions; (2) day-to-day variations in daily EE during 1 week; (3) energy costs of the main activities; and (4) the effect of usual activity on EE during sleep, seated and miscellaneous activities. Fifty adolescents (four groups of eleven to fifteen boys or girls aged 16-19 years) participated in the study. Body composition was measured by the skinfold-thickness method, and VO2max and external mechanical power (EMP) by a direct method (respiratory gas exchanges) on a cycloergometer. Daily EE and partial EE in free-living conditions were computed from heart-rate (HR) recordings during seven consecutive days using individual prediction equations established from the data obtained during a 24 h period spent in whole-body calorimeters with similar activities. Fat-free mass (FFM), VO2max, EMP, daily EE and EE during sleep were significantly higher in athletic than in non-athletic subjects. After adjustment for FFM, VO2max, EMP, daily EE and EE during exercise were still higher in athletic than in non-athletic adolescents (P < 0.001). However, adjusted sleeping EE was not significantly different between athletic and non-athletic adolescents. Increases in exercise EE were partly compensated for by significant reductions in EE during schoolwork and miscellaneous activities. Thus, the differences in daily EE between athletic and non-athletic subjects resulted mainly from increases in FFM and EE during exercise (duration and energy cost).

Authors+Show Affiliations

Laboratoire de Physiologie-Biologie du Sport, Faculté de Médecine, Clermont-Ferrand, France.No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

11103224

Citation

Ribeyre, J, et al. "Components and Variations in Daily Energy Expenditure of Athletic and Non-athletic Adolescents in Free-living Conditions." The British Journal of Nutrition, vol. 84, no. 4, 2000, pp. 531-9.
Ribeyre J, Fellmann N, Vernet J, et al. Components and variations in daily energy expenditure of athletic and non-athletic adolescents in free-living conditions. Br J Nutr. 2000;84(4):531-9.
Ribeyre, J., Fellmann, N., Vernet, J., Delaître, M., Chamoux, A., Coudert, J., & Vermorel, M. (2000). Components and variations in daily energy expenditure of athletic and non-athletic adolescents in free-living conditions. The British Journal of Nutrition, 84(4), pp. 531-9.
Ribeyre J, et al. Components and Variations in Daily Energy Expenditure of Athletic and Non-athletic Adolescents in Free-living Conditions. Br J Nutr. 2000;84(4):531-9. PubMed PMID: 11103224.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Components and variations in daily energy expenditure of athletic and non-athletic adolescents in free-living conditions. AU - Ribeyre,J, AU - Fellmann,N, AU - Vernet,J, AU - Delaître,M, AU - Chamoux,A, AU - Coudert,J, AU - Vermorel,M, PY - 2000/12/5/pubmed PY - 2001/2/28/medline PY - 2000/12/5/entrez SP - 531 EP - 9 JF - The British journal of nutrition JO - Br. J. Nutr. VL - 84 IS - 4 N2 - The objectives of the study were to determine: (1) daily energy expenditure (EE) of athletic and non-athletic adolescents of both sexes in free-living conditions; (2) day-to-day variations in daily EE during 1 week; (3) energy costs of the main activities; and (4) the effect of usual activity on EE during sleep, seated and miscellaneous activities. Fifty adolescents (four groups of eleven to fifteen boys or girls aged 16-19 years) participated in the study. Body composition was measured by the skinfold-thickness method, and VO2max and external mechanical power (EMP) by a direct method (respiratory gas exchanges) on a cycloergometer. Daily EE and partial EE in free-living conditions were computed from heart-rate (HR) recordings during seven consecutive days using individual prediction equations established from the data obtained during a 24 h period spent in whole-body calorimeters with similar activities. Fat-free mass (FFM), VO2max, EMP, daily EE and EE during sleep were significantly higher in athletic than in non-athletic subjects. After adjustment for FFM, VO2max, EMP, daily EE and EE during exercise were still higher in athletic than in non-athletic adolescents (P < 0.001). However, adjusted sleeping EE was not significantly different between athletic and non-athletic adolescents. Increases in exercise EE were partly compensated for by significant reductions in EE during schoolwork and miscellaneous activities. Thus, the differences in daily EE between athletic and non-athletic subjects resulted mainly from increases in FFM and EE during exercise (duration and energy cost). SN - 0007-1145 UR - https://www.unboundmedicine.com/medline/citation/11103224/Components_and_variations_in_daily_energy_expenditure_of_athletic_and_non_athletic_adolescents_in_free_living_conditions_ L2 - https://www.cambridge.org/core/product/identifier/S0007114500001847/type/journal_article DB - PRIME DP - Unbound Medicine ER -