Delia Smith West1, Jean R Harvey2, Rebecca A Krukowski3, T Elaine Prewitt4, Jeffrey Priest5, Takamaru Ashikaga5. 1. Department of Exercise Science, Arnold School of Public Health, University of South Carolina, Columbia, South Carolina, USA. westds@mailbox.sc.edu. 2. Department of Nutrition and Food Sciences, University of Vermont, Burlington, Vermont, USA. 3. Department of Preventive Medicine, University of Tennessee Health Science Center, Memphis, Tennessee, USA. 4. College of Public Health, University of Arkansas for Medical Sciences, Little Rock, Arkansas, USA. 5. Department of Medical Biostatistics, University of Vermont, Burlington, Vermont, USA.
Abstract
OBJECTIVE: To examine whether the addition of online motivational interviewing (MI) chats to a Web-based, group behavioral obesity treatment program augments weight loss outcomes relative to the Web-based weight control program alone. METHODS:Healthy individuals (N = 398, 24% minority) with overweight/obesity were randomized to a 36-session group Internet behavioral weight control treatment (BT) or the same group Internet treatment plus six individual MI chat sessions (BT + MI). Both conditions received weekly synchronous online chat group sessions for 6 months followed by 12 monthly group chats. Participants in both groups received identical behavioral lessons and individualized therapist feedback on progress toward meeting exercise and calorie goals. BT + MI also received six individual MI sessions delivered by a separate MI counselor via Web chat. Weight loss was measured at 6 and 18 months. RESULTS: There were no significant differences in weight loss between BT (-5.5 ± 6.0 kg) and BT + MI (-5.1 ± 6.3 kg) at 6 months or at 18 months (-3.3 ± 7.1 kg vs. -3.5 ± 7.7 kg for BT and BT + MI, respectively). Attendance at group chats did not differ between groups, nor did self-monitoring patterns, suggesting comparable engagement in the weight control program in both conditions. CONCLUSIONS: Online MI chat sessions were not a viable strategy to enhance Web-based weight control treatment outcomes.
RCT Entities:
OBJECTIVE: To examine whether the addition of online motivational interviewing (MI) chats to a Web-based, group behavioral obesity treatment program augments weight loss outcomes relative to the Web-based weight control program alone. METHODS: Healthy individuals (N = 398, 24% minority) with overweight/obesity were randomized to a 36-session group Internet behavioral weight control treatment (BT) or the same group Internet treatment plus six individual MI chat sessions (BT + MI). Both conditions received weekly synchronous online chat group sessions for 6 months followed by 12 monthly group chats. Participants in both groups received identical behavioral lessons and individualized therapist feedback on progress toward meeting exercise and calorie goals. BT + MI also received six individual MI sessions delivered by a separate MI counselor via Web chat. Weight loss was measured at 6 and 18 months. RESULTS: There were no significant differences in weight loss between BT (-5.5 ± 6.0 kg) and BT + MI (-5.1 ± 6.3 kg) at 6 months or at 18 months (-3.3 ± 7.1 kg vs. -3.5 ± 7.7 kg for BT and BT + MI, respectively). Attendance at group chats did not differ between groups, nor did self-monitoring patterns, suggesting comparable engagement in the weight control program in both conditions. CONCLUSIONS: Online MI chat sessions were not a viable strategy to enhance Web-based weight control treatment outcomes.
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