Exploring the working mechanisms of a web-based physical activity intervention, based on self-determination theory and motivational interviewing

Research output: Contribution to journalArticleAcademicpeer-review

Abstract

The aim of this study was to compare a web-based computer tailored physical activity intervention based on self-determination theory and motivational interviewing (I Move) to a traditional web-based computer tailored physical activity intervention (Active Plus) with regard to their basic psychological need supporting capabilities. We also aimed to assess the extent to whether self-determination constructs played a stronger mediating role in the effects of I Move than in the effects of Active Plus. A randomized controlled trial was conducted among 3089 participants (age 44.9 ± 12.9, 69.1% women), comparing 1) I Move, 2) Active Plus, and 3) a waiting list control condition. Physical activity behavior (measured at baseline, and at six months after baseline), potential mediators (intrinsic motivation, identified regulation, perceived competence and perceived choice, measured at baseline, and at three months after baseline) and basic psychological need support (measured six weeks and six months after baseline) were assessed through self-report, using web-based questionnaires. I Move was found to be more effective in supporting participants' basic psychological needs (sessions 1 and 2; p = .001; sessions 3 and 4; p = .004). The results of the mediation analyses show that the effects of both interventions were (equally) mediated by perceived competence, but not by intrinsic motivation, identified regulation or perceived choice.

Original languageEnglish
Pages (from-to)8-17
Number of pages10
JournalInternet Interventions
Volume3
DOIs
Publication statusPublished - Mar 2016

Fingerprint

Motivational Interviewing
Personal Autonomy
Exercise
Psychology
Mental Competency
Motivation
Waiting Lists
Self Report
Randomized Controlled Trials

Cite this

@article{aed91396f8a2448ba7f5987f41c30f7b,
title = "Exploring the working mechanisms of a web-based physical activity intervention, based on self-determination theory and motivational interviewing",
abstract = "The aim of this study was to compare a web-based computer tailored physical activity intervention based on self-determination theory and motivational interviewing (I Move) to a traditional web-based computer tailored physical activity intervention (Active Plus) with regard to their basic psychological need supporting capabilities. We also aimed to assess the extent to whether self-determination constructs played a stronger mediating role in the effects of I Move than in the effects of Active Plus. A randomized controlled trial was conducted among 3089 participants (age 44.9 ± 12.9, 69.1{\%} women), comparing 1) I Move, 2) Active Plus, and 3) a waiting list control condition. Physical activity behavior (measured at baseline, and at six months after baseline), potential mediators (intrinsic motivation, identified regulation, perceived competence and perceived choice, measured at baseline, and at three months after baseline) and basic psychological need support (measured six weeks and six months after baseline) were assessed through self-report, using web-based questionnaires. I Move was found to be more effective in supporting participants' basic psychological needs (sessions 1 and 2; p = .001; sessions 3 and 4; p = .004). The results of the mediation analyses show that the effects of both interventions were (equally) mediated by perceived competence, but not by intrinsic motivation, identified regulation or perceived choice.",
author = "Friederichs, {Stijn A H} and Catherine Bolman and Anke Oenema and Peter Verboon and Lilian Lechner",
year = "2016",
month = "3",
doi = "10.1016/j.invent.2015.11.003",
language = "English",
volume = "3",
pages = "8--17",
journal = "Internet Interventions",
issn = "2214-7829",
publisher = "Elsevier BV",

}

TY - JOUR

T1 - Exploring the working mechanisms of a web-based physical activity intervention, based on self-determination theory and motivational interviewing

AU - Friederichs, Stijn A H

AU - Bolman, Catherine

AU - Oenema, Anke

AU - Verboon, Peter

AU - Lechner, Lilian

PY - 2016/3

Y1 - 2016/3

N2 - The aim of this study was to compare a web-based computer tailored physical activity intervention based on self-determination theory and motivational interviewing (I Move) to a traditional web-based computer tailored physical activity intervention (Active Plus) with regard to their basic psychological need supporting capabilities. We also aimed to assess the extent to whether self-determination constructs played a stronger mediating role in the effects of I Move than in the effects of Active Plus. A randomized controlled trial was conducted among 3089 participants (age 44.9 ± 12.9, 69.1% women), comparing 1) I Move, 2) Active Plus, and 3) a waiting list control condition. Physical activity behavior (measured at baseline, and at six months after baseline), potential mediators (intrinsic motivation, identified regulation, perceived competence and perceived choice, measured at baseline, and at three months after baseline) and basic psychological need support (measured six weeks and six months after baseline) were assessed through self-report, using web-based questionnaires. I Move was found to be more effective in supporting participants' basic psychological needs (sessions 1 and 2; p = .001; sessions 3 and 4; p = .004). The results of the mediation analyses show that the effects of both interventions were (equally) mediated by perceived competence, but not by intrinsic motivation, identified regulation or perceived choice.

AB - The aim of this study was to compare a web-based computer tailored physical activity intervention based on self-determination theory and motivational interviewing (I Move) to a traditional web-based computer tailored physical activity intervention (Active Plus) with regard to their basic psychological need supporting capabilities. We also aimed to assess the extent to whether self-determination constructs played a stronger mediating role in the effects of I Move than in the effects of Active Plus. A randomized controlled trial was conducted among 3089 participants (age 44.9 ± 12.9, 69.1% women), comparing 1) I Move, 2) Active Plus, and 3) a waiting list control condition. Physical activity behavior (measured at baseline, and at six months after baseline), potential mediators (intrinsic motivation, identified regulation, perceived competence and perceived choice, measured at baseline, and at three months after baseline) and basic psychological need support (measured six weeks and six months after baseline) were assessed through self-report, using web-based questionnaires. I Move was found to be more effective in supporting participants' basic psychological needs (sessions 1 and 2; p = .001; sessions 3 and 4; p = .004). The results of the mediation analyses show that the effects of both interventions were (equally) mediated by perceived competence, but not by intrinsic motivation, identified regulation or perceived choice.

U2 - 10.1016/j.invent.2015.11.003

DO - 10.1016/j.invent.2015.11.003

M3 - Article

C2 - 30135784

VL - 3

SP - 8

EP - 17

JO - Internet Interventions

JF - Internet Interventions

SN - 2214-7829

ER -