1. Effects of a 2-Year Primary Care Lifestyle Intervention on Cardiometabolic Risk Factors: A Cluster-Randomized Trial
- Author
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Carl J. Lavie, Robert L. Newton, Kara D. Denstel, James L. Dorling, Vivian Fonseca, Connie L. Arnold, Christoph Höchsmann, Terry C. Davis, Eboni G. Price-Haywood, William D. Johnson, John W. Apolzan, Candice A. Myers, Peter T. Katzmarzyk, Dachuan Zhang, Emily F. Mire, and Corby K. Martin
- Subjects
Gerontology ,Adult ,Male ,Time Factors ,Primary health care ,Primary care ,030204 cardiovascular system & hematology ,Article ,03 medical and health sciences ,0302 clinical medicine ,Risk Factors ,Physiology (medical) ,Lifestyle intervention ,medicine ,Cluster Analysis ,Humans ,030212 general & internal medicine ,Cluster randomised controlled trial ,Life Style ,Cardiometabolic risk ,Primary Health Care ,Life style ,business.industry ,Cardiometabolic Risk Factors ,Middle Aged ,medicine.disease ,Obesity ,Female ,Cardiology and Cardiovascular Medicine ,business - Abstract
Background: Intensive lifestyle interventions (ILIs) are the first-line approach to effectively treat obesity and manage associated cardiometabolic risk factors. Because few people have access to ILIs in academic health centers, primary care must implement similar approaches for a meaningful effect on obesity and cardiometabolic disease prevalence. To date, however, effective lifestyle-based obesity treatment in primary care is limited. We examined the effectiveness of a pragmatic ILI for weight loss delivered in primary care among a racially diverse, low-income population with obesity for improving cardiometabolic risk factors over 24 months. Methods: The PROPEL trial (Promoting Successful Weight Loss in Primary Care in Louisiana) randomly allocated 18 clinics equally to usual care or an ILI and subsequently enrolled 803 (351 usual care, 452 ILI) adults (67% Black, 84% female) with obesity from participating clinics. The usual care group continued to receive their normal primary care. The ILI group received a 24-month high-intensity lifestyle-based obesity treatment program, embedded in the clinic setting and delivered by health coaches in weekly sessions initially and monthly sessions in months 7 through 24. Results: As recently demonstrated, participants receiving the PROPEL ILI lost significantly more weight over 24 months than those receiving usual care (mean difference, −4.51% [95% CI, −5.93 to −3.10]; P P P =0.76). Increases in high-density lipoprotein cholesterol were greater in the ILI than in the usual care group at both time points (mean difference at 24 months, 4.6 mg/dL [95% CI, 2.9–6.3]; P z score) decreased more in the ILI group than in the usual care group at both time points, with significant mean differences of the change of −0.31 (95% CI, −0.47 to −0.14; P P =0.01) at 24 months, respectively. Changes in total cholesterol, low-density lipoprotein cholesterol, triglycerides, and blood pressure did not differ significantly between groups at any time point. Conclusions: A pragmatic ILI consistent with national guidelines and delivered by trained health coaches in primary care produced clinically relevant improvements in cardiometabolic health in an underserved population over 24 months. Registration: URL: https://www.clinicaltrials.gov ; Unique identifier: NCT02561221.
- Published
- 2021