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| Directive and nondirective e-coach support for weight loss in overweight adults |
| Gabriele JM, Carpenter BD, Tate DF, Fisher EB |
| Annals of Behavioral Medicine 2011 Apr;41(2):252-263 |
| clinical trial |
| 6/10 [Eligibility criteria: Yes; Random allocation: Yes; Concealed allocation: No; Baseline comparability: Yes; Blind subjects: No; Blind therapists: No; Blind assessors: No; Adequate follow-up: Yes; Intention-to-treat analysis: Yes; Between-group comparisons: Yes; Point estimates and variability: Yes. Note: Eligibility criteria item does not contribute to total score] *This score has been confirmed* |
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BACKGROUND: Although e-coach support increases the effectiveness of internet weight loss interventions, no studies have assessed influence of type of e-coach support. PURPOSE: The effects of nondirective (collaborative, flexible) and directive (prescriptive, protocol driven) e-coach support on weight loss, dietary behavior, physical activity, and engagement were assessed in a 12-week weight loss e-coaching program. PROCEDURES: Overweight adults (n = 104) were randomly assigned to nondirective, directive, or minimal support. All received weekly lessons and feedback graphs via e-mail. Participants in the nondirective and directive support conditions received individualized nondirective or directive weight loss support. RESULTS: For females, weight loss (n2 = 0.10) and changes in waist circumference (n2 = 0.07) were greater in the directive than in the nondirective and minimal support conditions. CONCLUSIONS: Differences in type of e-coach support are salient to participants. Directive support is beneficial to females in a 12-week e-coach weight loss program.
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