The Dietary Intervention to Enhance Tracking with Mobile Devices (DIET Mobile) Study: A 6-Month Randomized Weight Loss Trial.

Autor: Turner-McGrievy GM; Department of Health Promotion, Education, and Behavior, Arnold School of Public Health, University of South Carolina, Columbia, South Carolina, USA., Wilcox S; Department of Exercise Science, Prevention Research Center, Arnold School of Public Health, University of South Carolina, Columbia, South Carolina, USA.; Prevention Research Center, Arnold School of Public Health, University of South Carolina, Columbia, South Carolina, USA., Boutté A; Department of Health Promotion, Education, and Behavior, Arnold School of Public Health, University of South Carolina, Columbia, South Carolina, USA., Hutto BE; Prevention Research Center, Arnold School of Public Health, University of South Carolina, Columbia, South Carolina, USA., Singletary C; Department of Health Promotion, Education, and Behavior, Arnold School of Public Health, University of South Carolina, Columbia, South Carolina, USA., Muth ER; Department of Psychology, Clemson University, Clemson, South Carolina, USA., Hoover AW; Holcombe Department of Electrical and Computer Engineering, Clemson University, Clemson, South Carolina, USA.
Jazyk: angličtina
Zdroj: Obesity (Silver Spring, Md.) [Obesity (Silver Spring)] 2017 Aug; Vol. 25 (8), pp. 1336-1342. Date of Electronic Publication: 2017 Jun 10.
DOI: 10.1002/oby.21889
Abstrakt: Objective: To examine the use of two different mobile dietary self-monitoring methods for weight loss.
Methods: Adults with overweight (n = 81; mean BMI 34.7 ± 5.6 kg/m 2 ) were randomized to self-monitor their diet with a mobile app (App, n = 42) or wearable Bite Counter device (Bite, n = 39). Both groups received the same behavioral weight loss information via twice-weekly podcasts. Weight, physical activity (International Physical Activity Questionnaire), and energy intake (two dietary recalls) were assessed at 0, 3, and 6 months.
Results: At 6 months, 75% of participants completed the trial. The App group lost significantly more weight (-6.8 ± 0.8 kg) than the Bite group (-3.0 ± 0.8 kg; group × time interaction: P < 0.001). Changes in energy intake (kcal/d) (-621 ± 157 App, -456 ± 167 Bite; P = 0.47) or number of days diet was tracked (90.7 ± 9.1 App, 68.4 ± 9.8 Bite; P = 0.09) did not differ between groups, but the Bite group had significant increases in physical activity metabolic equivalents (+2015.4 ± 684.6 min/wk; P = 0.02) compared to little change in the App group (-136.5 ± 630.6; P = 0.02). Total weight loss was significantly correlated with number of podcasts downloaded (r = -0.33, P < 0.01) and number of days diet was tracked (r = -0.33, P < 0.01).
Conclusions: While frequency of diet tracking was similar between the App and Bite groups, there was greater weight loss observed in the App group.
(© 2017 The Obesity Society.)
Databáze: MEDLINE
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