A randomized trial comparing weight loss treatment delivered in large versus small groups
| Autor: | Gareth R. Dutton, Fei Tan, Lisa M. Nackers, Tuong Vi T. Huynh, Stephen D. Anton, Michael G. Perri, Nicole C. Rushing, Pamela Jean Dubyak |
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| Jazyk: | angličtina |
| Předmět: |
Adult
Male Lifestyle intervention Gerontology Weight loss medicine.medical_specialty Health Behavior Medicine (miscellaneous) Physical Therapy Sports Therapy and Rehabilitation Clinical nutrition Motor Activity Body Mass Index law.invention Young Adult Randomized controlled trial law Internal medicine Humans Medicine Obesity Young adult Life Style Nutrition and Dietetics business.industry Research Weight change Health Maintenance Organizations Feeding Behavior Middle Aged medicine.disease Group size 3. Good health Black or African American Weight Reduction Programs Treatment Outcome Socioeconomic Factors Florida Extended care Female Randomized trial medicine.symptom business Body mass index Follow-Up Studies |
| Zdroj: | The International Journal of Behavioral Nutrition and Physical Activity |
| ISSN: | 1479-5868 |
| DOI: | 10.1186/s12966-014-0123-y |
| Popis: | Background Behavioral interventions for obesity are commonly delivered in groups, although the effect of group size on weight loss has not been empirically evaluated. This behavioral weight loss trial compared the 6- and 12-month weight changes associated with interventions delivered in a large group (LG) or small groups (SG). Methods Obese adults (N = 66; mean age = 50 years; mean BMI = 36.5 kg/m2; 47% African American; 86% women) recruited from a health maintenance organization were randomly assigned to: 1) LG treatment (30 members/group), or 2) SG treatment (12 members/group). Conditions were comparable in frequency and duration of treatment, which included 24 weekly group sessions (months 1–6) followed by six monthly extended care contacts (months 7–12). A mixed effects model with unstructured covariance matrix was applied to analyze the primary outcome of weight change while accounting for baseline weight and dependence among participants’ measurements over time. Results SG participants lost significantly more weight than LG participants at Month 6 (−6.5 vs. -3.2 kg; p = 0.03) and Month 12 (−7.0 vs. -1.7 kg; p |
| Databáze: | OpenAIRE |
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