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Type: Journal article
Title: Psychological well-being response to high protein and high carbohydrate weight loss diets in overweight and obese men: A randomised trial
Author: Lutze, J.
Taylor, P.
Brinkworth, G.
Wyld, B.
Syrette, J.
Wilson, C.
Clifton, P.
Noakes, M.
Citation: e-SPEN Journal: the European e-journal of clinical nutrition and metabolism, 2013; 8(6):235-240
Publisher: Elsevier BV
Issue Date: 2013
ISSN: 2212-8263
Statement of
Janna Lutze, Pennie Taylor, Grant D. Brinkworth, Belinda Wyld, Julie Syrette, Carlene J. Wilson, Peter M. Clifton, Manny Noakes
Abstract: Background & aims: High protein, low fat (HP) diets have established efficacy for weight management, but their effects on psychological well-being, particularly in men have not been well studied. This study compared an energy controlled HP diet with a high carbohydrate, low fat (HC) diet on psychological well-being after 1 year. Methods: 117 obese men (mean±SD, age 49.6±9.2 years; BMI 31.2±4.2kg/m2) were randomised to consumption of either an energy restricted (~7MJ/day), HP diet (n=57; 35% of total energy as protein, 40% carbohydrate, 25% fat) or an isocaloric, HC diet (n=61; 17% protein, 58% carbohydrate, 25% fat) for 52 weeks. Body weight and psychological well-being was measured with Profile of Mood States (POMS), Bachman's Self Esteem scale and the SF-36 instruments at baseline (week 0), week 12 and week 52. Results: Weight loss was (mean±SEM) 8.9±0.4kg (8.6%) at Week 12 and 10.5±0.8kg (10.5%) at Week 52 (p<0.001 for time); no difference between groups (p=0.91 time×diet effect). POMS subscales (anger-hostility, vigour-activity, confusion-bewilderment, tension-anxiety, depression-dejection, fatigue-inertia) and total mood disturbance score and the majority of SF-36 subscales significantly improved at one year (p≤0.05 for all). Self-esteem did not change significantly during the intervention (p=0.075). No effect of diet composition was evident for any of the psychometric measures assessed (p≥0.5 for time×diet effect). Conclusions: In overweight and obese men, weight loss on hypocaloric HP and HC diets were both effective in improving mood and general psychological well-being over one year.Registered under Identifier no. ACTRN 12606000002583. © 2013 European Society for Clinical Nutrition and Metabolism.
Keywords: Diet composition
Weight loss
Rights: © 2013 European Society for Clinical Nutrition and Metabolism.
DOI: 10.1016/j.clnme.2013.08.002
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