title: Self-efficacy as a moderator of the planning-behaviour relationship in interventions designed to promote physical activity.
abstract: Individuals who lack perceived self-efficacy may benefit less from planning interventions because they fail to apply their plans when encountering situations that appear challenging. Thus, self-efficacy may operate as a moderator in relation to the effects of planning interventions on behaviour. This article reports from two experimental studies using cluster randomisation. Study 1 included 58 patients with diabetes who received a face-to-face action planning intervention to improve their physical activity levels. Study 2 targeted the roles of planning and self-efficacy for the maintenance of regular running and for relapse prevention in 187 active individuals over a 2-year period. The email-delivered intervention prompted specific goal setting and facilitated planning to mobilise social support to secure relapse prevention. Results of the two studies were consistent with a moderating effect of self-efficacy in relation to the planning-behaviour relationship. Individuals with high self-efficacy benefited from planning interventions. If a person lacks self-efficacy, planning may not effectively promote physical activity.
authors.affiliation: Warsaw School of Social Sciences and Humanities, 03815 Warsaw, Poland. aluszczy@uccs.edu
authors.forename: Aleksandra
authors.initials: A
authors.lastname: Luszczynska
authors.forename: Ralf
authors.initials: R
authors.lastname: Schwarzer
authors.forename: Sonia
authors.initials: S
authors.lastname: Lippke
authors.forename: Magda
authors.initials: M
authors.lastname: Mazurkiewicz
mesh_terms: D000328:Adult; D000368:Aged; D003920:Diabetes Mellitus; D015444:Exercise / Q000523:psychology*; D005260:Female; D006293:Health Promotion / Q000379:methods*; D006801:Humans; D033182:Intention; D008297:Male; D008875:Middle Aged; D020377:Self Efficacy; D011795:Surveys and Questionnaires; D055815:Young Adult