Purpose: To identify patterns of behavioral adherence among 388 African Americans who participated in the Weight Loss Maintenance trial and examine associated psychosocial factors.
Methods: Using repeated measures latent class analysis, we modeled patterns of adherence to recommendations regarding fruit and vegetable, total fat, and saturated fat intake and physical activity at baseline, 6, and 18 months. Latent classes were compared on the SF-36 (mental health composite and vitality subscale), Perceived Stress Scale, and PHQ-8 at each time point.
Results: Three distinct latent classes emerged: Nutrition Adherers (n = 96); Physical Activity Adherers (n = 61); and Non-Adherers (n = 231). All groups showed initial improvement in psychosocial measures followed by relapse. Non-Adherers had significantly lower mean mental health and vitality scores and higher depression scores than adherers at 6 and 18 months.
Conclusion: Psychological well-being should be addressed with African Americans in weight loss treatment to enhance behavior change and improve weight loss outcomes.
Keywords: African Americans; Behavior change; Mental well-being; Obesity; Vitality.
Application of Latent Class Analysis to Identify Behavioral Patterns of Response to Behavioral Lifestyle Interventions in Overweight and Obese AdultsSL Fitzpatrick et al. Int J Behav Med 22 (4), 471-80. PMID 25331853. - Randomized Controlled TrialLatent class analysis is a useful method to apply to clinical trial data to identify distinct patterns of response to behavioral interventions. Overweight/ obese particip …
Predictors of Long-Term Adherence to Multiple Health Behavior Recommendations for Weight ManagementSL Fitzpatrick et al. Health Educ Behav 45 (6), 997-1007. PMID 29478353.Regular assessment of health behaviors and psychosocial measures such as vitality may help identify nonresponders and inform treatment tailoring to improve long-term beha …
Behavioral and Pharmacotherapy Weight Loss Interventions to Prevent Obesity-Related Morbidity and Mortality in Adults: An Updated Systematic Review for the U.S. Preventive Services Task Force [Internet]EL LeBlanc et al. PMID 30354042. - ReviewWe found that behavior-based weight-loss interventions with or without weight loss medications resulted in more weight loss than usual care conditions. The degree of weig …
Predictors of Dietary Change Among Those Who Successfully Lost Weight in Phase I of the Weight Loss Maintenance TrialMA Mcvay et al. Nutr Diet 71 (3), 144-151. PMID 26877708.Few psychosocial factors examined contributed to variability in dietary change. Even when achieving meaningful weight losses during a behavioural weight loss intervention …
Behavioral Counseling to Promote a Healthful Diet and Physical Activity for Cardiovascular Disease Prevention in Adults Without Known Cardiovascular Disease Risk Factors: Updated Systematic Review for the U.S. Preventive Services Task Force [Internet]CD Patnode et al. PMID 29364620. - ReviewThe results of our updated systematic review are generally consistent in magnitude with our 2010 review on this topic. In general, diet and physical activity behavioral i …