Cited by 558Obesity, Physical Activity, DietBariatric Surgery and OutcomesDiabetes, Cardiovascular Risks, and Lipoproteins

Effects of Diet and Physical Activity Interventions on Weight Loss and Cardiometabolic Risk Factors in Severely Obese Adults: A Randomized Trial

Open access
Goodpaster, Bret H., DeLany, James P., Otto, Amy D., Kuller, Lewis, Vockley, Jerry, South-Paul, Jeannette E., Thomas, Stephen B., Brown, Jolene +4 more·2010·JAMA

Abstract

CONTEXT: The prevalence of severe obesity is increasing markedly, as is prevalence of comorbid conditions such as hypertension and type 2 diabetes mellitus; however, apart from bariatric surgery and pharmacotherapy, few clinical trials have evaluated the treatment of severe obesity. OBJECTIVE: To determine the efficacy of a weight loss and physical activity intervention on the adverse health risks of severe obesity. DESIGN, SETTING, AND PARTICIPANTS: Single-blind randomized trial conducted from February 2007 through April 2010 at the University of Pittsburgh. Participants were 130 (37% African American) severely obese (class II or III) adult participants without diabetes recruited from the community. INTERVENTIONS: One-year intensive lifestyle intervention consisting of diet and physical activity. One group (initial physical activity) was randomized to diet and physical activity for the entire 12 months; the other group (delayed physical activity) had the identical dietary intervention but with physical activity delayed for 6 months. MAIN OUTCOME MEASURES: Changes in weight. Secondary outcomes were additional components comprising cardiometabolic risk, including waist circumference, abdominal adipose tissue, and hepatic fat content. RESULTS: Of 130 participants randomized, 101 (78%) completed the 12-month follow-up assessments. Although both intervention groups lost a significant amount of weight at 6 months, the initial-activity group lost significantly more weight in the first 6 months compared with the delayed-activity group (10.9 kg [95% confidence interval {CI}, 9.1-12.7] vs 8.2 kg [95% CI, 6.4-9.9], P = .02 for group × time interaction). Weight loss at 12 months, however, was similar in the 2 groups (12.1 kg [95% CI, 10.0-14.2] vs 9.9 kg [95% CI, 8.0-11.7], P = .25 for group × time interaction). Waist circumference, visceral abdominal fat, hepatic fat content, blood pressure, and insulin resistance were all reduced in both groups. The addition of physical activity promoted greater reductions in waist circumference and hepatic fat content. CONCLUSION: Among patients with severe obesity, a lifestyle intervention involving diet combined with initial or delayed initiation of physical activity resulted in clinically significant weight loss and favorable changes in cardiometabolic risk factors. TRIAL REGISTRATION: clinicaltrials.gov Identifier: NCT00712127.

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Integrity signals

Registry

Crossref · 10.1001/jama.2010.1505

Cites

42 of 42 references verified0 citation errors · 0 not checkable

Statistics

Claims the paper makes

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

The self-check needs the paper’s full text.

Cites

Flagged first, then by citations

Cited by

Sorted by citations

Authors
Goodpaster, B. H., DeLany, J. P., Otto, A. D., Kuller, L., Vockley, J., South-Paul, J. E., Thomas, S. B., Brown, J., McTigue, K., Hames, K. C., Lang, W., & Jakicic, J. M.
Affiliations
University of Pittsburgh (US)
Venue
JAMA
Published
2010-10-27
Volume
304
Issue
16
Pages
1795
ISSN
  • 0002-9955 (ISSN-L)
  • 0098-7484
OpenAlex
W2093609715
Cited by
558
References
41
Citations by year
2026: 15 · 2025: 16 · 2024: 14 · 2023: 22 · 2022: 24 · 2021: 32 · 2020: 20 · 2019: 28 · 2018: 27 · 2017: 33 · 2016: 46 · 2015: 59 · 2014: 60 · 2013: 53 · 2012: 56
FWCI
51.02
Type
journal article
Language
en
Open access
Locations
  • JAMA (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • Pennsylvania Department of Health
  • University of Pittsburgh
  • National Institutes of Health (UL1TR000005)
  • Medical Center, University of Pittsburgh
  • National Institute on Aging (P30AG024827)
  • National Institute of Diabetes and Digestive and Kidney Diseases (T32-DK07052, R01DK078775, T32DK007052)
  • National Center for Research Resources (UL1RR024153)
  • National Center for Advancing Translational Sciences
Topics
  • Health Sciences › Medicine › Public Health, Environmental and Occupational Health › Obesity, Physical Activity, Diet
  • Health Sciences › Medicine › Surgery › Bariatric Surgery and Outcomes
  • Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Diabetes, Cardiovascular Risks, and Lipoproteins
Keywords
morbid obesity, weight loss, lifestyle intervention, dietary intervention, physical activity, cardiometabolic risk factors, hepatic fat content, visceral adipose tissue, waist circumference, insulin resistance, blood pressure, hypertension, type 2 diabetes prevention, African American adults, bariatric surgery alternatives, obesity-related comorbidities
MeSH terms
Adult, Blood Pressure, Cardiovascular Diseases, Diet, Exercise Therapy, Female, Humans, Insulin Resistance, Life Style, Liver, Male, Middle Aged, Obesity, Morbid, Risk Factors, Time Factors, Weight Loss, Single-Blind Method, Treatment Outcome, Intra-Abdominal Fat, Waist Circumference

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review