Purpose: To evaluate the impact of a supplemental telephonic physical activity coaching program based on Active Living Every Day (ALED) when combined with the services of a specialty medical practice on weight loss, body and truncal fat reduction, and blood pressure improvement when treating obese persons over six months. Setting: Participants were recruited from the Minnesota Center for Obesity, Metabolism and Endocrinology (MNCOME) specialty medical practice.
Methods: Forty obese adults participated in the study. The design was a single-blinded, randomized controlled trial, with participants randomized to receive either: (1) treatment group which included telephonic physical activity coaching with pedometer-based tracking and active participation with MNCOME or (2) control group which included only active participation with MNCOME. Measures for all variables were assessed at baseline and six months.
Results: Weight, body and truncal fat, and blood pressure variables did not differ significantly between groups after six months. However, the results indicate that both telephonic coaching and control groups achieved a statistically significant within-group difference from baseline to a period of six-months for mean weight losses of 14.7 ± 3.4 (p ≤ 0.002) and 15.4 ± 3.2 lbs (p ≤ 0.001) respectively, but not for any other variables under consideration. A greater percentage of initial weight loss was achieved on average by the telephonic coaching group of 6.5% than the control group of 5.9% after six months. However, a greater percentage of the control group (61%) achieved the 5-10% weight loss goal than the telephonic coaching group (44%) over six months.
Conclusion: At the present time, this is the only study to evaluate the impact of a supplemental telephonic physical activity coaching program based on ALED to the services of a medical specialty care clinic for the purpose of treating obesity. However, the findings suggest that there is no significant impact when such a program is added to MNCOME for improvements in weight, body composition, and blood pressure over six months based on the number of obese participants of this trial.
University of Minnesota M.S. thesis. July 2013. Major: Kinesiology. Advisors: Stacy Ingraham, PhD, and Arthur Leon, MD. 1 computer file (PDF); ix, 92 pages, appendices A-G.
Zambrana, Michael S..
The effect of a supplemental telephonic physical activity coaching program for treating obesity: a randomized controlled trial.
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