Changes in multiple health outcomes at 12 and 24 weeks resulting from 12 weeks of exercise, counseling with or without dietary counseling in obese adults

    Authors

    K. J. Melanson; J. S. Dell'Olio; M. R. Carpenter;T. J. Angelopoulos

    Comments

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    Abbreviated Journal Title

    Nutrition

    Keywords

    weight managment; risk factors; psychological well-being; body; composition; meal replacements; QUALITY-OF-LIFE; WEIGHT-LOSS PROGRAM; FAT-FREE MASS; SELF-EFFICACY; BODY-COMPOSITION; RISK-FACTORS; OLDER WOMEN; MAINTENANCE; MEN; INDIVIDUALS; Nutrition & Dietetics

    Abstract

    OBJECTIVE: We compared health outcomes in obese adults who underwent 1 wk of exercise counseling with or without dietary counseling, followed by 12 wk of observational, monitoring. METHODS: Ninety adults(77 women and 13 men; 42.6 +/- 6.0 y; body mass index, 31.5 +/- 2.8 kg/m(2)) were randomly assigned to exercise-only (EX) or diet-plus-exercise (DEX) groups and counseled weekly by exercise physiologists on a 12-wk walking program. DEX subjects were also counseled by dietitians on a hypocaloric diet, (-500 kcal/d). From weeks 12 to 24 subjects were monitored but not counseled. At weeks 0, 12, and 24, data collection included body composition (air displacement plethysmography), fitness (maximum oxygen consumption, 3-min step-test, and timed mile), plasma lipids, weight loss efficacy (Weight Efficacy Life-Style Questionnaire), quality of life (Medical Outcomes Study Health Survey-Short Form 36), and mood (Profile of Mood States). RESULTS: At 12 and 24 wk, weight and body mass index decreased in DEX subjects (both P < 0.05) but not in EX subjects. However, lean body mass increased significantly in EX (24 wk, P < 0.05) but not in DEX,subjects. In both groups, fat mass decreased (P < 0,05 for EX subjects at 24 wk; P < 0.05 for DEX subjects at,12 and 24 wk) and waist circumference decreased (P < 0.05 for EX subjects at 12 and 24 wk; P < 0.05 for DEX subjects at 12 and 24 wk). At 12 and 24 wk, DEX subjects showed decreased levels of total plasma cholesterol and triacylglycerols (both P < 0.05) and improvements with regard to the Weight Efficacy Life-Style Questionnaire (P < 0.05), three domains of the Medical Outcomes Study Health Survey-Short Form 364 (all P < 0.05), and three domains of the Profile of Mood States (all P < 0.05) that were not seen in EX subjects. CONCLUSIONS: Exercise counseling for 12 wk in obese adults improves some body composition indices that can be sustained over 12 wk of monitoring. The addition of dietary counseling increases improvements in body composition, lipid profiles, and several psychological parameters. (C)Elsevier Inc. 2004.

    Journal Title

    Nutrition

    Volume

    20

    Issue/Number

    10

    Publication Date

    1-1-2004

    Document Type

    Article

    Language

    English

    First Page

    849

    Last Page

    856

    WOS Identifier

    WOS:000224511900002

    ISSN

    0899-9007

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