Cited by 331Muscle metabolism and nutritionDiet and metabolism studiesCardiovascular and exercise physiology

Dietary Protein and Exercise Have Additive Effects on Body Composition during Weight Loss in Adult Women

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Layman, Donald K., Evans, Ellen, Baum, Jamie I., Seyler, Jennifer, Erickson, Donna J., Boileau, Richard A.·2005·The Journal of Nutrition

Abstract

This study examined the interaction of 2 diets (high protein, reduced carbohydrates vs. low protein, high carbohydrates) with exercise on body composition and blood lipids in women (n = 48, approximately 46 y old, BMI = 33 kg/m(2)) during weight loss. The study was a 4-mo weight loss trial using a 2 x 2 block design (Diet x Exercise). Diets were equal in total energy (7.1 MJ/d) and lipids ( approximately 30% energy intake) but differed in protein content and the ratio of carbohydrate:protein at 1.6 g/(kg . d) and <1.5 (PRO group) vs. 0.8 g/(kg . d) and >3.5 (CHO group), respectively. Exercise comparisons were lifestyle activity (control) vs. a supervised exercise program (EX: 5 d/wk walking and 2 d/wk resistance training). Subjects in the PRO and PRO + EX groups lost more total weight and fat mass and tended to lose less lean mass (P = 0.10) than the CHO and CHO + EX groups. Exercise increased loss of body fat and preserved lean mass. The combined effects of diet and exercise were additive for improving body composition. Serum lipid profiles improved in all groups, but changes varied among diet treatments. Subjects in the CHO groups had larger reductions in total cholesterol and LDL cholesterol, whereas subjects in the PRO groups had greater reductions in triacylglycerol and maintained higher concentrations of HDL cholesterol. This study demonstrated that a diet with higher protein and reduced carbohydrates combined with exercise additively improved body composition during weight loss, whereas the effects on blood lipids differed between diet treatments.

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Crossref · 10.1093/jn/135.8.1903

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  • Increasing dietary protein can promote loss of fat mass when higher intakes of daily protein (2-3× the RDA) are combined with an exercise program and a hypoenergetic diet.

    “can also promote the loss of fat mass when higher intakes of daily protein (2-3× the RDA) are combined with an exercise program and a hypoenergetic diet.”

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Authors
Layman, D. K., Evans, E., Baum, J. I., Seyler, J., Erickson, D. J., & Boileau, R. A.
Affiliations
University of Illinois Urbana-Champaign (US)
Corresponding author
Layman, Donald K.
Venue
The Journal of Nutrition
Publisher
Elsevier BV
Published
2005-08
Volume
135
Issue
8
Pages
1903-1910
ISSN
0022-3166 (ISSN-L)
OpenAlex
W2165340329
Cited by
330
References
44
Citations by year
2026: 5 · 2025: 4 · 2024: 9 · 2023: 7 · 2022: 9 · 2021: 5 · 2020: 17 · 2019: 9 · 2018: 15 · 2017: 15 · 2016: 19 · 2015: 26 · 2014: 25 · 2013: 20 · 2012: 25
FWCI
6.25
Type
journal article
Language
en
Open access
Locations
  • Journal of Nutrition (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cell Biology › Muscle metabolism and nutrition
  • Health Sciences › Medicine › Physiology › Diet and metabolism studies
  • Health Sciences › Medicine › Complementary and alternative medicine › Cardiovascular and exercise physiology
Keywords
dietary protein, physical activity, body composition, weight loss, high-protein diet, low-carbohydrate diet, fat mass, lean body mass, serum lipids, cholesterol, triglycerides, HDL cholesterol, resistance training, walking, women
MeSH terms
Adult, Body Composition, Energy Intake, Dietary Carbohydrates, Dietary Proteins, Female, Humans, Life Style, Middle Aged, Weight Loss, Exercise, Body Mass Index, Diet, Protein-Restricted

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