Erratum: The Dietary Intervention to Enhance Tracking with Mobile Devices (DIET Mobile) Study: A 6-Month Randomized Weight Loss Trial.
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- Record sourced from PubMed, PMID 29178582.
- Also identified by DOI 10.1002/oby.22076 and PMC identifier 6859842.
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Abstract
To examine the use of two different mobile dietary self-monitoring methods for weight loss. Adults with overweight (<i>n</i> = 81; mean BMI 34.7 ± 5.6 kg/m<sup>2</sup>) were randomized to self-monitor their diet with a mobile app (App, <i>n</i> = 42) or wearable Bite Counter device (Bite, <i>n</i> = 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. 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: <i>P</i> < 0.001). Changes in energy intake (kcal/d) (−621 ± 157 App, −456 ± 167 Bite; <i>P</i> = 0.47) or number of days diet was tracked (90.7 ± 9.1 App, 68.4 ± 9.8 Bite; <i>P</i> = 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; <i>P</i> = 0.02) compared to little change in the App group (−136.5 ± 630.6; <i>P</i> = 0.02). Total weight loss was significantly correlated with number of podcasts downloaded (<i>r</i> = −0.33, <i>P</i> < 0.01) and number of days diet was tracked (<i>r</i> = −0.33, <i>P</i> < 0.01). While frequency of diet tracking was similar between the App and Bite groups, there was greater weight loss observed in the App group.