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Longitudinal changes in activity patterns, physical capacities, energy expenditure, and body composition in severely obese adolescents during a multidisciplinary weight-reduction program.
Int J Obes (Lond) 2005; 29(1):37-46IJ

Abstract

OBJECTIVE

To determine the longitudinal changes in body composition, physical capacities, and time and energy expenditure (EE) devoted to various activities in the course of a 9-month weight-reduction period.

DESIGN

Longitudinal, clinical intervention including lifestyle education, moderate energy restriction, progressive training, and psychological follow-up.

SUBJECTS

A total of 27 (13 boys and 14 girls) severely obese adolescents (mean BMI: 33.9 kg/m2; 41.5% fat mass (FM)), aged 12-16 y.

MEASUREMENTS

Before the beginning and after the weight-reduction program, body composition was assessed by dual-energy X-ray absorptiometry (DXA), physical capacities by multistage treadmill test, and EE both by whole-body calorimetry and in free-living conditions using the heart rate-recording method. During 8 months of the weight-reduction period, type and duration of each activity were recorded using a daily controlled activity diary.

RESULTS

One boy resigned after 5 months. Body weight (BW) and FM decreased (-19 and -42%, respectively, P<0.001) both in boys and in girls, but fat-free mass (FFM) decreased only in girls (-6%, P<0.001). VO2max (l/min) did not vary significantly, but strength and fitness were improved (P<0.001). Time and EE spent at sedentary activities decreased significantly (P<0.001) to the benefit of moderate (recreational) activities and total physical activities (P<0.001) at the institution during the weekdays, and at home during the weekends and holidays.

CONCLUSION

The great BW and FM losses, preservation of FFM, and improvement of physical capacities of obese adolescents obtained under experimental conditions were associated with increases in leisure physical activities in free-living conditions at the expense of sleep and sedentary activities.

Authors+Show Affiliations

Energy and Protein Metabolism Research Unit, INRA, University of Auvergne, CRNH, Clermont-Ferrand, France.No affiliation info availableNo 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

15534613

Citation

Lazzer, S, et al. "Longitudinal Changes in Activity Patterns, Physical Capacities, Energy Expenditure, and Body Composition in Severely Obese Adolescents During a Multidisciplinary Weight-reduction Program." International Journal of Obesity (2005), vol. 29, no. 1, 2005, pp. 37-46.
Lazzer S, Boirie Y, Poissonnier C, et al. Longitudinal changes in activity patterns, physical capacities, energy expenditure, and body composition in severely obese adolescents during a multidisciplinary weight-reduction program. Int J Obes (Lond). 2005;29(1):37-46.
Lazzer, S., Boirie, Y., Poissonnier, C., Petit, I., Duché, P., Taillardat, M., ... Vermorel, M. (2005). Longitudinal changes in activity patterns, physical capacities, energy expenditure, and body composition in severely obese adolescents during a multidisciplinary weight-reduction program. International Journal of Obesity (2005), 29(1), pp. 37-46.
Lazzer S, et al. Longitudinal Changes in Activity Patterns, Physical Capacities, Energy Expenditure, and Body Composition in Severely Obese Adolescents During a Multidisciplinary Weight-reduction Program. Int J Obes (Lond). 2005;29(1):37-46. PubMed PMID: 15534613.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Longitudinal changes in activity patterns, physical capacities, energy expenditure, and body composition in severely obese adolescents during a multidisciplinary weight-reduction program. AU - Lazzer,S, AU - Boirie,Y, AU - Poissonnier,C, AU - Petit,I, AU - Duché,P, AU - Taillardat,M, AU - Meyer,M, AU - Vermorel,M, PY - 2004/11/10/pubmed PY - 2005/3/30/medline PY - 2004/11/10/entrez SP - 37 EP - 46 JF - International journal of obesity (2005) JO - Int J Obes (Lond) VL - 29 IS - 1 N2 - OBJECTIVE: To determine the longitudinal changes in body composition, physical capacities, and time and energy expenditure (EE) devoted to various activities in the course of a 9-month weight-reduction period. DESIGN: Longitudinal, clinical intervention including lifestyle education, moderate energy restriction, progressive training, and psychological follow-up. SUBJECTS: A total of 27 (13 boys and 14 girls) severely obese adolescents (mean BMI: 33.9 kg/m2; 41.5% fat mass (FM)), aged 12-16 y. MEASUREMENTS: Before the beginning and after the weight-reduction program, body composition was assessed by dual-energy X-ray absorptiometry (DXA), physical capacities by multistage treadmill test, and EE both by whole-body calorimetry and in free-living conditions using the heart rate-recording method. During 8 months of the weight-reduction period, type and duration of each activity were recorded using a daily controlled activity diary. RESULTS: One boy resigned after 5 months. Body weight (BW) and FM decreased (-19 and -42%, respectively, P<0.001) both in boys and in girls, but fat-free mass (FFM) decreased only in girls (-6%, P<0.001). VO2max (l/min) did not vary significantly, but strength and fitness were improved (P<0.001). Time and EE spent at sedentary activities decreased significantly (P<0.001) to the benefit of moderate (recreational) activities and total physical activities (P<0.001) at the institution during the weekdays, and at home during the weekends and holidays. CONCLUSION: The great BW and FM losses, preservation of FFM, and improvement of physical capacities of obese adolescents obtained under experimental conditions were associated with increases in leisure physical activities in free-living conditions at the expense of sleep and sedentary activities. SN - 0307-0565 UR - https://www.unboundmedicine.com/medline/citation/15534613/Longitudinal_changes_in_activity_patterns_physical_capacities_energy_expenditure_and_body_composition_in_severely_obese_adolescents_during_a_multidisciplinary_weight_reduction_program_ L2 - http://dx.doi.org/10.1038/sj.ijo.0802845 DB - PRIME DP - Unbound Medicine ER -