Determining who responds better to a computer- vs. human-delivered physical activity intervention: results from the community health advice by telephone CHAT trialReport as inadecuate




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International Journal of Behavioral Nutrition and Physical Activity

, 10:109

First Online: 22 September 2013Received: 24 January 2013Accepted: 11 September 2013

Abstract

BackgroundLittle research has explored who responds better to an automated vs. human advisor for health behaviors in general, and for physical activity PA promotion in particular. The purpose of this study was to explore baseline factors i.e., demographics, motivation, interpersonal style, and external resources that moderate intervention efficacy delivered by either a human or automated advisor.

MethodsData were from the CHAT Trial, a 12-month randomized controlled trial to increase PA among underactive older adults full trial N = 218 via a human advisor or automated interactive voice response advisor. Trial results indicated significant increases in PA in both interventions by 12 months that were maintained at 18-months. Regression was used to explore moderation of the two interventions.

ResultsResults indicated amotivation i.e., lack of intent in PA moderated 12-month PA d = 0.55, p < 0.01 and private self-consciousness i.e., tendency to attune to one’s own inner thoughts and emotions moderated 18-month PA d = 0.34, p < 0.05 but a variety of other factors e.g., demographics did not p > 0.12.

ConclusionsResults provide preliminary evidence for generating hypotheses about pathways for supporting later clinical decision-making with regard to the use of either human- vs. computer-delivered interventions for PA promotion.

KeywordsPhysical activity Intervention Moderation Interactive voice response Behavioral intervention technology system Targeting AbbreviationsCHATCommunity health advice by telephone

Mod+Moderate- to vigorous-intensity physical activity

PARStanford 7-day physical activity recall

TSRQ-ETreatment self-regulation questionnaire for exercise

SCS-RSelf-consciousness survey-revised

SSESocial support for exercise

AmotAmotivation

PSCPrivate self-consciousness

SSSocial support.

Electronic supplementary materialThe online version of this article doi:10.1186-1479-5868-10-109 contains supplementary material, which is available to authorized users.

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Author: Eric B Hekler - Matthew P Buman - Jennifer Otten - Cynthia M Castro - Lauren Grieco - Bess Marcus - Robert H Friedman -

Source: https://link.springer.com/







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