Cited by 1,096Nutrition and Health in AgingFrailty in Older AdultsPhysical Activity and Health

Weight loss, exercise, or both and physical function in obese older adults

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Villareal, Dennis T., Chode, Suresh, Parimi, Nehu, Sinacore, David R., Hilton, Tiffany, Armamento-Villareal, Reina, Napoli, Nicola, Qualls, Clifford +1 more·2011·New England Journal of Medicine

Abstract

BACKGROUND: Obesity exacerbates the age-related decline in physical function and causes frailty in older adults; however, the appropriate treatment for obese older adults is controversial. METHODS: In this 1-year, randomized, controlled trial, we evaluated the independent and combined effects of weight loss and exercise in 107 adults who were 65 years of age or older and obese. Participants were randomly assigned to a control group, a weight-management (diet) group, an exercise group, or a weight-management-plus-exercise (diet-exercise) group. The primary outcome was the change in score on the modified Physical Performance Test. Secondary outcomes included other measures of frailty, body composition, bone mineral density, specific physical functions, and quality of life. RESULTS: A total of 93 participants (87%) completed the study. In the intention-to-treat analysis, the score on the Physical Performance Test, in which higher scores indicate better physical status, increased more in the diet-exercise group than in the diet group or the exercise group (increases from baseline of 21% vs. 12% and 15%, respectively); the scores in all three of those groups increased more than the scores in the control group (in which the score increased by 1%) (P<0.001 for the between-group differences). Moreover, the peak oxygen consumption improved more in the diet-exercise group than in the diet group or the exercise group (increases of 17% vs. 10% and 8%, respectively; P<0.001); the score on the Functional Status Questionnaire, in which higher scores indicate better physical function, increased more in the diet-exercise group than in the diet group (increase of 10% vs. 4%, P<0.001). Body weight decreased by 10% in the diet group and by 9% in the diet-exercise group, but did not decrease in the exercise group or the control group (P<0.001). Lean body mass and bone mineral density at the hip decreased less in the diet-exercise group than in the diet group (reductions of 3% and 1%, respectively, in the diet-exercise group vs. reductions of 5% and 3%, respectively, in the diet group; P<0.05 for both comparisons). Strength, balance, and gait improved consistently in the diet-exercise group (P<0.05 for all comparisons). Adverse events included a small number of exercise-associated musculoskeletal injuries. CONCLUSIONS: These findings suggest that a combination of weight loss and exercise provides greater improvement in physical function than either intervention alone. (Funded by the National Institutes of Health; ClinicalTrials.gov number, NCT00146107.).

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  • Unopposed diet therapy without exercise in older frail adults ≥65 years with obesity (BMI ≥30 kg/m2) led to a marked loss of lean mass at 6 months and 1 year (−3.5 kg and −3.2 kg, respectively) compared with the diet and exercise group, where the loss of lean mass was partially mitigated (−1.7 kg and −1.8 kg, respectively).

    “Unopposed diet therapy without exercise in older frail adults ≥65 years with obesity (BMI ≥30 kg/m2) led to a marked loss of lean mass at 6 months and 1 year (−3.5 kg and −3.2 kg, respectively) compared with the diet and exercise group, where the loss of lean mass was partially mitigated (−1.7 kg and −1.8 kg, respectively)246.”

    From Sarcopenic obesity in older adults: aetiology, epidemiology and treatment strategies (2018) · cites this paper as [246]

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  • In a 1-year randomized controlled trial of older adults with obesity, calorie restriction producing average total weight loss of 10% improved modified Physical Performance Test scores by 12%, while combining calorie restriction with regular exercise training led to a 21% improvement compared with placebo.

    “CR resulting in an average total weight loss of 10% improved physical function as assessed with modified Physical Performance Test (PPT) by 12%; however, combining CR with regular exercise training led to a 21% improvement in PPT scores in comparison with placebo.”

    From The Benefits of Exercise Training in Combination With Weight Loss Therapies (2025) · cites this paper as [17]

    The Abstract Results report 10% weight loss and a 12% increase from baseline in Physical Performance Test scores in the diet group, and a 21% increase from baseline in the diet–exercise group. The 21% figure is not an improvement relative to placebo: the comparator was a control group, whose score increased by 1%. (LLM, conf=0.90)

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  • In 107 elderly individuals with obesity, after 12 months, the exercise group increased lean mass by 2.3% (1.3 kg), while the diet-plus-exercise and diet-only groups decreased lean mass by 3.1% (-1.8 kg) and 5.2% (-3.2 kg).

    “A study comparing the independent and combined effects of caloric restriction and exercise in 107 elderly (70 years) individuals with obesity reported that, after 12 months, the exercise group increased LM by 2.3% (11.3 kg), while the dietplus-exercise and diet-only groups experienced decreases in LM of 3.1% (À1.8 kg) and 5.2% (À3.2 kg).”

    From Incretin-Based Weight Loss Pharmacotherapy: Can Resistance Exercise Optimize Changes in Body Composition? (2024) · cites this paper as [70]

    The Results section (Body Weight and Composition; page unavailable) reports the stated directions and kilogram changes in lean mass for all three groups, and the Methods describe a one-year trial of 107 older adults with obesity. However, the citing sentence as printed says the exercise group gained 11.3 kg, whereas the source reports 1.3 kg. The supplied paraphrase corrects that figure. (LLM, conf=0.88)

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  • Weight loss improves global physical function, most likely because of reduced fat mass.

    “weight loss improves global physical function, most likely because of reduced fat mass”

    From Preserving Healthy Muscle during Weight Loss (2017) · cites this paper as [55]

    The Discussion reports that weight loss improved physical function in obese older adults and suggests that changes in body composition could underlie the improvement. The claim omits that population restriction and presents reduced fat mass as a more likely explanation than the paper establishes. Page numbers were not available in our copy. (LLM, conf=0.86)

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  • Progressive resistance exercise training in conjunction with a hypocaloric diet attenuates the weight-loss-associated loss of muscle mass in middle-aged and older men and women.

    “Several investigators found that a progressive resistance exercise training program in conjunction with a hypocaloric diet attenuated the weight-loss-associated loss of muscle mass in middle-aged and older men and women (55,65,66).”

    From Preserving Healthy Muscle during Weight Loss (2017) · cites this paper as [55]

    The Results (Body Weight and Composition; page not supplied) report less lean-body-mass loss with diet plus exercise than with diet alone. The Methods describe a calorie-deficit diet and progressive resistance training, but the exercise program also included aerobic activity. Participants were at least 65 years old, so this paper does not establish the claim for middle-aged adults or isolate the effect of resistance training. (LLM, conf=0.87)

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Authors
Villareal, D. T., Chode, S., Parimi, N., Sinacore, D. R., Hilton, T., Armamento-Villareal, R., Napoli, N., Qualls, C., & Shah, K.
Affiliations
  • University of New Mexico (US)
  • Washington University in St. Louis (US)
Venue
New England Journal of Medicine
Published
2011-03-31
Volume
364
Issue
13
Pages
1218-1229
ISSN
  • 0028-4793 (ISSN-L)
  • 1533-4406
OpenAlex
W2031434074
Cited by
1,096
References
39
Citations by year
2026: 70 · 2025: 60 · 2024: 56 · 2023: 48 · 2022: 69 · 2021: 78 · 2020: 78 · 2019: 57 · 2018: 75 · 2017: 66 · 2016: 92 · 2015: 85 · 2014: 78 · 2013: 93 · 2012: 66
FWCI
57.16
Type
journal article
Language
en
Open access
Locations
  • New England Journal of Medicine (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
  • Digital Commons@Becker (Washington University School of Medicine) (submittedVersion)
Funders
  • Institute of Clinical and Translational Sciences
  • Foundation for Physical Therapy
  • National Institutes of Health (5p60dk020579-35, UL1TR000448, 7r01ag025501-06, DK20579, DK56341, RR024992, RO1-AG025501)
  • National Institute on Aging (R01-AG025501)
  • National Institute of Diabetes and Digestive and Kidney Diseases (DK20579, P30-DK56341, P60-DK-020579, P30DK056341, P30DK020579)
  • National Institute of Child Health and Human Development
  • National Center for Research Resources (UL1RR024992)
  • National Center for Advancing Translational Sciences
  • Eunice Kennedy Shriver National Institute of Child Health and Human Development (HD-007434, T32HD007434)
Topics
  • Health Sciences › Medicine › Physiology › Nutrition and Health in Aging
  • Health Sciences › Medicine › Geriatrics and Gerontology › Frailty in Older Adults
  • Health Sciences › Medicine › Physiology › Physical Activity and Health
Keywords
obesity, older adults, weight loss, diet, physical activity, physical function, frailty, peak oxygen uptake, lean body mass, bone mineral density, quality of life, gait, musculoskeletal injuries, physical performance tests, body composition, sarcopenia, osteoporosis
MeSH terms
Activities of Daily Living, Aged, Body Composition, Diet, Reducing, Exercise Test, Female, Humans, Male, Obesity, Quality of Life, Weight Loss, Exercise, Bone Density, Frail Elderly, Intention to Treat Analysis

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