Abstract
This study (N = 98) randomly placed participants in either a higher protein or American Heart Association diet group with each group initiating an aerobic exercise program. Body composition (BC) was measured using four different methodologies (DEXA, BIA, skinfold, BMI) along with height and weight, while Health-Related Quality of Life (HRQOL) changes were measured using the Medical Outcomes Short Form 36 (SF-36). There were no significant time/diet interactions in HRQOL scores, body fat measures, and weight with the exception of Role-Physical scores (p = .006) with posttest scores higher in participants in Diet 1. Role-Physical scores changed significantly in participants in Diet 1 (p = .0001) and Diet 2 (p = .026) with higher posttest scores in each group. Social functioning had a significant main effect for time in both groups with pretest scores in both diet groups lower than their respective posttest scores (p = .015). HRQOL pretest scores were not significantly different between groups at baseline (p = .56). ANOVA revealed no significant differences in average calories between groups (p = .88). Analysis revealed no differences in exercise in minutes (p = .66) nor statistically significant changes in BC or weight (p = .65). Conclusions: Improvements in HRQOL were demonstrated in two subscales related to physiological and psychological functioning. These novel findings add to literature suggesting that HRQOL, at least concerning social functioning, work and other daily activities (Role-Physical) may improve by initiating an exercise and dietary program even when weight loss or BC improvements have been unsuccessful.
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The Faculty Research Investment Program at Baylor University has provided funding for this study. The Exercise and Sports Nutrition Laboratory at Baylor University provided quality of life screening and technicians for this project. Anthony L. Almada, MSc and Imaginutrition provided the DEXA scans for this study.
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Bowden, R.G., Lanning, B.A., Doyle, E.I. et al. The Effects of Weight Loss Attempts, Exercise Initiation, and Dietary Practices on Health Related Quality of Life. Applied Research Quality Life 3, 149–160 (2008). https://doi.org/10.1007/s11482-008-9052-8
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DOI: https://doi.org/10.1007/s11482-008-9052-8