title: Moderators of the intention-behaviour relationship in the physical activity domain: a systematic review.
abstract: Intention is theorised as the proximal determinant of behaviour in many leading theories and yet intention-behaviour discord is prevalent. The purpose of this review was to retrieve, theme and appraise the variables that have been evaluated as the potential moderators of the intention-behaviour relationship in the physical activity (PA) domain. Eligible studies were selected from English peer-reviewed journals and had to report an empirical test of moderation of intention-PA (I-PA) with a third variable. Fifty-seven studies passed the inclusion criteria and these represented 38 different potential moderators of I-PA. Intention stability proved to be the most consistent moderator of I-PA, suggesting that much of the discordance may be from motivational flux between initial intention and eventual behaviour. Anticipated regret and conscientiousness also had evidence as the moderators of I-PA. Perceived control/self-efficacy, planning, extraversion, habit and environmental proximity to recreation showed some evidence for moderation, while gender, agreeableness, openness, body mass index and ethnicity did not appear to moderate I-PA. The findings demonstrate that traditional intention theories may need augmentation to better account for the evidence present in I-PA discordance.
authors.affiliation: School of Exercise Science, Physical, and Health Education, University of Victoria, Victoria, Canada. rhodes@uvic.ca
authors.forename: Ryan E
authors.initials: RE
authors.lastname: Rhodes
authors.forename: Leanne
authors.initials: L
authors.lastname: Dickau
mesh_terms: D000328:Adult; D000367:Age Factors; D001008:Anxiety Disorders / Q000523:psychology; D015992:Body Mass Index; D004644:Emotions / Q000502:physiology; D015444:Exercise / Q000502:physiology*; D005120:Extraversion, Psychological; D006184:Habits; D015438:Health Behavior; D006801:Humans; D033182:Intention; D008875:Middle Aged; D000075384:Neuroticism; D012111:Residence Characteristics; D020377:Self Efficacy; D012737:Sex Factors