Testing an integrated model of the theory of planned behaviour and self-determination theory for different energy balance-related behaviours and intervention intensities.

OBJECTIVES The aim of the study was to test the relations between constructs from the self-determination theory (autonomous and controlled motivation), the theory of planned behaviour (attitudes, self-efficacy, and intentions), and behaviour change within a theoretically integrated model. Additionally, the aim was to test if these relations vary by behaviour (physical activity or dietary behaviour) or intervention intensity (frequency). DESIGN It was a randomized controlled trial with a 'usual care' condition (medical screening only) and an intervention condition (medical screening+access to a website and coaching). Participants in the latter condition could freely determine their own intervention intensity. METHODS Participants (N= 287) completed measures of the theoretical constructs and behaviour at baseline and after the first intervention year (N= 236). Partial least squares path modelling was used. RESULTS Changes in autonomous motivation positively predicted changes in self-efficacy and intentions towards a healthy diet. Changes in controlled motivation positively predicted changes in attitudes towards physical activity, changes in self-efficacy, and changes in behavioural intentions. The intervention intensity moderated the effect of self-efficacy on intentions towards physical activity and the relationship between attitude and physical activity. Changes in physical activity were positively predicted by changes in intentions whereas desired changes in fat intake were negatively predicted by the intervention intensity. CONCLUSIONS Important relations within the theoretically integrated model were confirmed but others were not. Moderation effects were found for behaviour and intervention intensity.

[1]  James C. Anderson,et al.  STRUCTURAL EQUATION MODELING IN PRACTICE: A REVIEW AND RECOMMENDED TWO-STEP APPROACH , 1988 .

[2]  F. Sniehotta,et al.  Towards a theory of intentional behaviour change: plans, planning, and self-regulation. , 2009, British journal of health psychology.

[3]  Jemma M. Harris,et al.  From Psychological Need Satisfaction to Intentional Behavior: Testing a Motivational Sequence in Two Behavioral Contexts , 2006, Personality & social psychology bulletin.

[4]  Jeffrey M. Woodbridge.  Econometric Analysis of Cross Section and Panel Data , 2002 .

[5]  Martin S. Hagger,et al.  The influence of autonomous and controlling motives on physical activity intentions within the Theory of Planned Behaviour. , 2002, British journal of health psychology.

[6]  Shah Ebrahim,et al.  European Guidelines on Cardiovascular Disease Prevention in Clinical Practice (Version 2012) , 2012, International Journal of Behavioral Medicine.

[7]  M. Conner,et al.  Extending the Theory of Planned Behavior: A Review and Avenues for Further Research , 1998 .

[8]  P. Sheeran.  Intention—Behavior Relations: A Conceptual and Empirical Review , 2002 .

[9]  M. Hagger,et al.  The Effects of Self-Discordance, Self-Concordance, and Implementation Intentions on Health Behavior , 2008 .

[10]  Lee Hooper,et al.  Reduced or modified dietary fat for preventing cardiovascular disease. , 2012, The Cochrane database of systematic reviews.

[11]  Marjan van den Akker,et al.  Clusters of lifestyle behaviors: results from the Dutch SMILE study. , 2008, Preventive medicine.

[12]  Shah Ebrahim,et al.  European guidelines on cardiovascular disease prevention in clinical practice: executive summary: Fourth Joint Task Force of the European Society of Cardiology and Other Societies on Cardiovascular Disease Prevention in Clinical Practice (Constituted by representatives of nine societies and by invit , 2007, European heart journal.

[13]  S. Biddle,et al.  A Meta-Analytic Review of the Theories of Reasoned Action and Planned Behavior in Physical Activity: Predictive Validity and the Contribution of Additional Variables , 2002 .

[14]  M. Hagger,et al.  Effects of an intervention based on self-determination theory on self-reported leisure-time physical activity participation , 2009, Psychology & health.

[15]  S. Biddle,et al.  A Meta-Analysis of Perceived Locus of Causality in Exercise, Sport, and Physical Education Contexts. , 2003 .

[16]  C. Vandelanotte,et al.  Reliability and Validity of a Computerized and Dutch Version of the International Physical Activity Questionnaire (IPAQ) , 2005 .

[17]  G Kishi,et al.  Reliability and Validity , 1999 .

[18]  R. Schwarzer,et al.  Disentangling the relation between intentions, planning, and behaviour: A moderated mediation analysis , 2009, Psychology & health.

[19]  F. Azizi,et al.  Fruit and vegetable consumption and risk factors for cardiovascular disease. , 2007, Metabolism: clinical and experimental.

[20]  P. Sheeran,et al.  How do implementation intentions promote goal attainment? A test of component processes , 2007 .

[21]  N. Jacobs,et al.  Cost-utility of a cardiovascular prevention program in highly educated adults: Intermediate results of a randomized controlled trial , 2010, International Journal of Technology Assessment in Health Care.

[22]  Edward L. Deci,et al.  l9: Self-Determination Research: Reflections and Future Directions , 2002 .

[23]  William Lewis,et al.  Research Note - Statistical Power in Analyzing Interaction Effects: Questioning the Advantage of PLS with Product Indicators , 2007, Inf. Syst. Res..

[24]  D. Markland,et al.  A Modification to the Behavioural Regulation in Exercise Questionnaire to Include an Assessment of Amotivation , 2004 .

[25]  David P Mackinnon,et al.  Confidence Limits for the Indirect Effect: Distribution of the Product and Resampling Methods , 2004, Multivariate behavioral research.

[26]  K. Jöreskog.  Statistical analysis of sets of congeneric tests , 1971 .

[27]  Benjamin Schüz,et al.  Beyond behavioural intentions: planning mediates between intentions and physical activity. , 2008, British journal of health psychology.

[28]  D. Karlis,et al.  A Simple Rule for the Selection of Principal Components , 2003 .

[29]  N. Jacobs,et al.  The PreCardio-study protocol – a randomized clinical trial of a multidisciplinary electronic cardiovascular prevention programme , 2007, BMC cardiovascular disorders.

[30]  M. Hagger,et al.  Integrating the theory of planned behaviour and self-determination theory in health behaviour: a meta-analysis. , 2009, British journal of health psychology.

[31]  Marylène Gagné,et al.  Facilitating autonomous motivation for smoking cessation. , 2002, Health psychology : official journal of the Division of Health Psychology, American Psychological Association.

[32]  Effects of an intervention based on self-determination theory on self-reported leisure-time physical activity participation , 2011 .

[33]  P. Sheeran,et al.  Does changing behavioral intentions engender behavior change? A meta-analysis of the experimental evidence. , 2006, Psychological bulletin.

[34]  P. Teixeira,et al.  International Journal of Behavioral Nutrition and Physical Activity Predicting Short-term Weight Loss Using Four Leading Health Behavior Change Theories , 2006 .

[35]  Susan Michie,et al.  Investigating theoretical explanations for behaviour change: The case study of ProActive , 2008, Psychology & health.

[36]  Terry E. Duncan,et al.  Approaches to Testing Interaction Effects Using Structural Equation Modeling Methodology. , 1998, Multivariate behavioral research.

[37]  Shah Ebrahim,et al.  Fourth Joint Task Force of the European Society of Cardiology and other Societies on Cardiovascular Disease Prevention in Clinical Practice (constituted by representatives of nine societies and by invited experts) , 2007 .

[38]  S. Michie,et al.  Are interventions theory-based? Development of a theory coding scheme. , 2010, Health psychology : official journal of the Division of Health Psychology, American Psychological Association.

[39]  J. M. Cortina,et al.  Interaction, Nonlinearity, and Multicollinearity: implications for Multiple Regression: , 1993 .

[40]  C. Vandelanotte,et al.  Efficacy of sequential or simultaneous interactive computer-tailored interventions for increasing physical activity and decreasing fat intake , 2005, Annals of behavioral medicine : a publication of the Society of Behavioral Medicine.

[41]  E. Deci,et al.  Self-determination theory and the facilitation of intrinsic motivation, social development, and well-being. , 2000, The American psychologist.

[42]  M. Hagger.  Theoretical integration in health psychology: unifying ideas and complementary explanations. , 2009, British journal of health psychology.

[43]  M. Hagger,et al.  First- and higher-order models of attitudes, normative influence, and perceived behavioural control in the theory of planned behaviour. , 2005, The British journal of social psychology.

[44]  L. Cronbach,et al.  How we should measure "change": Or should we? , 1970 .

[45]  M. Conner,et al.  Efficacy of the Theory of Planned Behaviour: a meta-analytic review. , 2001, The British journal of social psychology.

[46]  B. Franklin,et al.  Comparison of cardioprotective benefits of vigorous versus moderate intensity aerobic exercise. , 2006, The American journal of cardiology.

[47]  Joan L. Duda,et al.  Testing a self‐determination theory‐based teaching style intervention in the exercise domain , 2008 .

[48]  Martin S. Hagger,et al.  The Process by Which Relative Autonomous Motivation Affects Intentional Behavior: Comparing Effects Across Dieting and Exercise Behaviors , 2006 .

[49]  Martin S. Hagger,et al.  The Processes by Which Perceived Autonomy Support in Physical Education Promotes Leisure-Time Physical Activity Intentions and Behavior: A Trans-Contextual Model , 2003 .

[50]  E. Deci,et al.  Self-regulation and the problem of human autonomy: does psychology need choice, self-determination, and will? , 2006, Journal of personality.

[51]  A. Bauman,et al.  Physical activity and public health: updated recommendation for adults from the American College of Sports Medicine and the American Heart Association. , 2007, Circulation.

[52]  Donald W. K. Andrews,et al.  ON THE NUMBER OF BOOTSTRAP REPETITIONS FOR BCa CONFIDENCE INTERVALS , 2002, Econometric Theory.

[53]  L. Rajmil.  Health measurement scales. A practical guide to their development and use, 3rd ed , 2005 .

[54]  S. Otten.  "Me and us" or "us and them"? The self as a heuristic for defining minimal ingroups , 2003 .

[55]  S. Biddle,et al.  The Cognitive Processes by which Perceived Locus of Causality Predicts Participation in Physical Activity , 2002, Journal of health psychology.

[56]  C. Abraham,et al.  A taxonomy of behavior change techniques used in interventions. , 2008, Health psychology : official journal of the Division of Health Psychology, American Psychological Association.

[57]  Brett Smith,et al.  The stability of the attitude-intention relationship in the context of physical activity , 2005, Journal of sports sciences.

[58]  D. Ingledew,et al.  A graded conceptualisation of self-determination in the regulation of exercise behaviour: Development of a measure using confirmatory factor analytic procedures , 1997 .

[59]  M. Kliegel,et al.  Changes in self-regulatory cognitions as predictors of changes in smoking and nutrition behaviour , 2009, Psychology & health.

[60]  C. Fornell,et al.  Evaluating structural equation models with unobservable variables and measurement error. , 1981 .

[61]  Icek Ajzen,et al.  From Intentions to Actions: A Theory of Planned Behavior , 1985 .

[62]  A. Bandura.  Self-efficacy mechanism in human agency , 2024, Psihologìâ ì suspìlʹstvo.

[63]  D. A. Kenny,et al.  The moderator-mediator variable distinction in social psychological research: conceptual, strategic, and statistical considerations. , 1986, Journal of personality and social psychology.

[64]  R. Vallerand,et al.  Motivation and dropout in female handballers: a 21‐month prospective study , 2002 .

[65]  N. Jacobs,et al.  An autonomy-supporting cardiovascular prevention programme: Practical recommendations from Self-Determination Theory , 2008 .

[66]  Johannes Brug,et al.  Clustering of energy balance-related behaviours and their intrapersonal determinants , 2004 .

[67]  Corneel Vandelanotte,et al.  Reliability and validity of a computerized questionnaire to measure fat intake in Belgium , 2004 .

[68]  Cheryl Burke Jarvis,et al.  The problem of measurement model misspecification in behavioral and organizational research and some recommended solutions. , 2005, The Journal of applied psychology.

[69]  Joan L. Duda,et al.  A test of self-determination theory in the exercise domain , 2006 .

[70]  Ilse de Bourdeaudhuij,et al.  Reliability and validity of a questionnaire to measure personal, social and environmental correlates of fruit and vegetable intake in 10–11-year-old children in five European countries , 2005, Public Health Nutrition.

[71]  E. Deci,et al.  Facilitating internalization: the self-determination theory perspective. , 1994, Journal of personality.

[72]  Johannes Brug,et al.  Should implementation intentions interventions be implemented in obesity prevention: the impact of if-then plans on daily physical activity in Dutch adults , 2009, The international journal of behavioral nutrition and physical activity.

[73]  Ilse De Bourdeaudhuij,et al.  Addressing overreporting on the International Physical Activity Questionnaire (IPAQ) telephone survey with a population sample , 2003, Public Health Nutrition.

[74]  Nicola Orsini,et al.  Quantifying the dose-response of walking in reducing coronary heart disease risk: meta-analysis , 2009, European Journal of Epidemiology.