Psychological well-being response to high protein and high carbohydrate weight loss diets in overweight and obese men: A randomised trial

Janna Lutze, Pennie Taylor, Grant Brinkworth, Belinda Wyld, Julie Syrette, Carlene Wilson, Peter Clifton, Manny Noakes

    Research output: Contribution to journalArticlepeer-review

    5 Citations (Scopus)

    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 anzctr.org.au Identifier no. ACTRN 12606000002583.

    Original languageEnglish
    Pages (from-to)e235-e240
    Number of pages1
    Journale-SPEN Journal
    Volume8
    Issue number6
    DOIs
    Publication statusPublished - 1 Dec 2013

    Keywords

    • Diet composition
    • Mood
    • Obesity
    • Psychological
    • Weight loss

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