Lifestyle intervention reduces body weight and improves cardiometabolic risk factors in worksites

Jean Mayer USDA Human Nutrition Research Center on Aging, Tufts University, Boston, MA.
American Journal of Clinical Nutrition (Impact Factor: 6.77). 02/2013; 97(4). DOI: 10.3945/ajcn.112.046995
Source: PubMed


BACKGROUND: Worksites are potentially effective locations for obesity control because they provide opportunities for group intervention and social support. Studies are needed to identify effective interventions in these settings. OBJECTIVE: We examined the effects of a multicomponent lifestyle intervention on weight loss and prevention of regain in 4 worksites (2 intervention and 2 control sites). DESIGN: Overweight and obese employees (n = 133) enrolled in this pilot worksite-randomized controlled trial with a 0-6-mo weight-loss phase and a 6-12-mo structured weight-maintenance phase. The intervention combined recommendations to consume a reduced-energy, low-glycemic load, high-fiber diet with behavioral change education. Outcome measurements included changes in body weight and cardiometabolic risk factors.Results: The mean ± SEM weight loss was substantial in intervention participants, whereas control subjects gained weight (-8.0 ± 0.7 compared with +0.9 ± 0.5 kg, respectively; P < 0.001), and 89% of participants completed the weight-loss phase. Intervention effects were not significant at the 0.05 level but would have been at the 0.10 level (P = 0.08) in a mixed model in which the worksite nested within group was a random factor. There were also significant improvements in cardiometabolic risk factors in intervention compared with control subjects regarding fasting total cholesterol, glucose, systolic blood pressure, and diastolic blood pressure (P ≤ 0.02 for each). No significant weight regain was observed in participants who enrolled in the structured weight-maintenance program (0.5 ± 0.7 kg; P = 0.65), and overweight and obese employees in intervention worksites who were not enrolled in the weight-loss program lost weight compared with subjects in control worksites (-1.3 ± 0.5 compared with +0.7 ± 0.2 kg, respectively; P = 0.02). CONCLUSION: Worksites can be effective for achieving clinically important reductions in body weight and improved cardiometabolic risk factors. This trial was registered at as NCT01470222.

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Available from: Sai Krupa Das, Nov 24, 2015
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    • "The Internet also provides an alternative method of low intensity weight loss treatment dissemination [19]; however, internet-only weight loss programs are generally less effective than phone or inperson programs [20, 21]. Workplace-based or employer-sponsored weight loss programs, often provided as a benefit to employees by employers who seek to increase the health and productivity of their workforce and decrease their health care costs, have been found to be acceptable by workers and modestly effective for reducing body weight [22] [23]. Workplace weight loss interventions vary widely in their offerings and may include on-site physical activity options, monetary incentives, nutrition information, social support, and/or behavioral counseling [22]. "
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  • American Journal of Clinical Nutrition 02/2013; 97(4). DOI:10.3945/ajcn.113.058339 · 6.77 Impact Factor
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