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Differences in daily energy expenditure in lean and obese women: the role of posture allocation.
Obesity (Silver Spring). 2008 Jan; 16(1):34-9.O

Abstract

OBJECTIVE

A low resting metabolic rate (RMR) is considered a risk factor for weight gain and obesity; however, due to the greater fat-free mass (FFM) found in obesity, detecting an impairment in RMR is difficult. The purposes of this study were to determine the RMR in lean and obese women controlling for FFM and investigate activity energy expenditure (AEE) and daily activity patterns in the two groups.

METHODS AND PROCEDURES

Twenty healthy, non-smoking, pre-menopausal women (10 lean and 10 obese) participated in this 14-day observational study on free-living energy balance. RMR was measured by indirect calorimetry; AEE and total energy expenditure (TEE) were calculated using doubly labeled water (DLW), and activity patterns were investigated using monitors. Body composition including FFM and fat mass (FM) was measured by dual energy X-ray absorptiometry (DXA).

RESULTS

RMR was similar in the obese vs. lean women (1601 +/- 109 vs. 1505 +/- 109 kcal/day, respectively, P = 0.12, adjusting for FFM and FM). Obese women sat 2.5 h more each day (12.7 +/- 3.2 h vs. 10.1 +/- 2.0 h, P < 0.05), stood 2 h less (2.7 +/- 1.0 h vs. 4.7 +/- 2.2 h, P = 0.02) and spent half as much time in activity than lean women (2.6 +/- 1.5 h vs. 5.4 +/- 1.9 h, P = 0.002).

DISCUSSION

RMR was not lower in the obese women; however, they were more sedentary and expended less energy in activity than the lean women. If the obese women adopted the activity patterns of the lean women, including a modification of posture allocation, an additional 300 kcal could be expended every day.

Authors+Show Affiliations

Department of Food Science and Human Nutrition at Iowa State University, Ames, Iowa, USA. Darcy.Johannsen@pbrc.eduNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Comparative Study
Journal Article

Language

eng

PubMed ID

18223609

Citation

Johannsen, Darcy L., et al. "Differences in Daily Energy Expenditure in Lean and Obese Women: the Role of Posture Allocation." Obesity (Silver Spring, Md.), vol. 16, no. 1, 2008, pp. 34-9.
Johannsen DL, Welk GJ, Sharp RL, et al. Differences in daily energy expenditure in lean and obese women: the role of posture allocation. Obesity (Silver Spring). 2008;16(1):34-9.
Johannsen, D. L., Welk, G. J., Sharp, R. L., & Flakoll, P. J. (2008). Differences in daily energy expenditure in lean and obese women: the role of posture allocation. Obesity (Silver Spring, Md.), 16(1), 34-9. https://doi.org/10.1038/oby.2007.15
Johannsen DL, et al. Differences in Daily Energy Expenditure in Lean and Obese Women: the Role of Posture Allocation. Obesity (Silver Spring). 2008;16(1):34-9. PubMed PMID: 18223609.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Differences in daily energy expenditure in lean and obese women: the role of posture allocation. AU - Johannsen,Darcy L, AU - Welk,Gregory J, AU - Sharp,Rick L, AU - Flakoll,Paul J, PY - 2008/1/29/pubmed PY - 2008/4/9/medline PY - 2008/1/29/entrez SP - 34 EP - 9 JF - Obesity (Silver Spring, Md.) JO - Obesity (Silver Spring) VL - 16 IS - 1 N2 - OBJECTIVE: A low resting metabolic rate (RMR) is considered a risk factor for weight gain and obesity; however, due to the greater fat-free mass (FFM) found in obesity, detecting an impairment in RMR is difficult. The purposes of this study were to determine the RMR in lean and obese women controlling for FFM and investigate activity energy expenditure (AEE) and daily activity patterns in the two groups. METHODS AND PROCEDURES: Twenty healthy, non-smoking, pre-menopausal women (10 lean and 10 obese) participated in this 14-day observational study on free-living energy balance. RMR was measured by indirect calorimetry; AEE and total energy expenditure (TEE) were calculated using doubly labeled water (DLW), and activity patterns were investigated using monitors. Body composition including FFM and fat mass (FM) was measured by dual energy X-ray absorptiometry (DXA). RESULTS: RMR was similar in the obese vs. lean women (1601 +/- 109 vs. 1505 +/- 109 kcal/day, respectively, P = 0.12, adjusting for FFM and FM). Obese women sat 2.5 h more each day (12.7 +/- 3.2 h vs. 10.1 +/- 2.0 h, P < 0.05), stood 2 h less (2.7 +/- 1.0 h vs. 4.7 +/- 2.2 h, P = 0.02) and spent half as much time in activity than lean women (2.6 +/- 1.5 h vs. 5.4 +/- 1.9 h, P = 0.002). DISCUSSION: RMR was not lower in the obese women; however, they were more sedentary and expended less energy in activity than the lean women. If the obese women adopted the activity patterns of the lean women, including a modification of posture allocation, an additional 300 kcal could be expended every day. SN - 1930-7381 UR - https://www.unboundmedicine.com/medline/citation/18223609/Differences_in_daily_energy_expenditure_in_lean_and_obese_women:_the_role_of_posture_allocation_ L2 - https://doi.org/10.1038/oby.2007.15 DB - PRIME DP - Unbound Medicine ER -