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[Energy expenditure at rest and body composition in obese subjects before and after weight loss].

Abstract

In 7 obese subjects (3 males and 4 females), before (T0) and after (T60) weight loss, and in 10 nonobese subjects (4 males and 6 females) as controls, resting energy expenditure (REE) and body composition were evaluated. In obese subjects fat-free mass (FFM) and fat mass (FM) were significantly reduced after weight loss. REE, expressed in absolute value, was significantly higher in obese subjects at T0 with respect to controls (1683 +/- 77.3 vs. 1425 +/- 70.5 Kcal/day; p less than 0.05); in obese group REE was significantly lower at T60 (1563 +/- 63.5 Kcal/day) than at T0 (p less than 0.01). The decrease in REE observed in the obese group after weight loss was related only to the loss of FFM (r = 0.88; p less than 0.01). REE, expressed in relation to FFM, was not different between control and obese subjects at T0 (28.64 +/- 0.42 vs 26.40 +/- 1.08 Kcal/Kg-FFM/day; pns); however, this value was significantly lower in the obese group at T60 (25.99 +/- 1.07 Kcal/Kg-FFM/day) with respect to controls (p less than 0.05). It is concluded that a reduction in REE, due at least in part to the loss of FFM, may contribute to the difficulty in the maintenance of body weight often observed in obese subjects after a period on hypocaloric diet.

Authors

, , , , , ,

Source

Recenti progressi in medicina 80:11 1989 Nov pg 574-6

MeSH

Adult
Body Composition
Body Mass Index
Body Weight
Energy Metabolism
Female
Humans
Male
Obesity
Rest
Time Factors
Weight Loss

Pub Type(s)

English Abstract
Journal Article

Language

ita

PubMed ID

2623319

Citation

Verga, S, et al. "[Energy Expenditure at Rest and Body Composition in Obese Subjects Before and After Weight Loss]." Recenti Progressi in Medicina, vol. 80, no. 11, 1989, pp. 574-6.
Verga S, Buscemi S, Vaccaro M, et al. [Energy expenditure at rest and body composition in obese subjects before and after weight loss]. Recenti Prog Med. 1989;80(11):574-6.
Verga, S., Buscemi, S., Vaccaro, M., Caimi, G., Costa, A., Kirlaki, E., & Novara, F. (1989). [Energy expenditure at rest and body composition in obese subjects before and after weight loss]. Recenti Progressi in Medicina, 80(11), pp. 574-6.
Verga S, et al. [Energy Expenditure at Rest and Body Composition in Obese Subjects Before and After Weight Loss]. Recenti Prog Med. 1989;80(11):574-6. PubMed PMID: 2623319.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - [Energy expenditure at rest and body composition in obese subjects before and after weight loss]. AU - Verga,S, AU - Buscemi,S, AU - Vaccaro,M, AU - Caimi,G, AU - Costa,A, AU - Kirlaki,E, AU - Novara,F, PY - 1989/11/1/pubmed PY - 1989/11/1/medline PY - 1989/11/1/entrez SP - 574 EP - 6 JF - Recenti progressi in medicina JO - Recenti Prog Med VL - 80 IS - 11 N2 - In 7 obese subjects (3 males and 4 females), before (T0) and after (T60) weight loss, and in 10 nonobese subjects (4 males and 6 females) as controls, resting energy expenditure (REE) and body composition were evaluated. In obese subjects fat-free mass (FFM) and fat mass (FM) were significantly reduced after weight loss. REE, expressed in absolute value, was significantly higher in obese subjects at T0 with respect to controls (1683 +/- 77.3 vs. 1425 +/- 70.5 Kcal/day; p less than 0.05); in obese group REE was significantly lower at T60 (1563 +/- 63.5 Kcal/day) than at T0 (p less than 0.01). The decrease in REE observed in the obese group after weight loss was related only to the loss of FFM (r = 0.88; p less than 0.01). REE, expressed in relation to FFM, was not different between control and obese subjects at T0 (28.64 +/- 0.42 vs 26.40 +/- 1.08 Kcal/Kg-FFM/day; pns); however, this value was significantly lower in the obese group at T60 (25.99 +/- 1.07 Kcal/Kg-FFM/day) with respect to controls (p less than 0.05). It is concluded that a reduction in REE, due at least in part to the loss of FFM, may contribute to the difficulty in the maintenance of body weight often observed in obese subjects after a period on hypocaloric diet. SN - 0034-1193 UR - https://www.unboundmedicine.com/medline/citation/2623319/[Energy_expenditure_at_rest_and_body_composition_in_obese_subjects_before_and_after_weight_loss]_ L2 - https://medlineplus.gov/obesity.html DB - PRIME DP - Unbound Medicine ER -