title: Self-Paced Exercise, Affective Response, and Exercise Adherence: A Preliminary Investigation Using Ecological Momentary Assessment.
abstract: Affective response to exercise may mediate the effects of self-paced exercise on exercise adherence. Fiftynine low-active (exercise <60 min/week), overweight (body mass index: 25.0-39.9) adults (ages 18-65) were randomly assigned to self-paced (but not to exceed 76% maximum heart rate) or prescribed moderate intensity exercise (64-76% maximum heart rate) in the context of otherwise identical 6-month print-based exercise promotion programs. Frequency and duration of exercise sessions and affective responses (good/bad) to exercise were assessed via ecological momentary assessment throughout the 6-month program. A regression-based mediation model was used to estimate (a) effects of experimental condition on affective response to exercise (path a = 0.20, SE = 0.28, f2= 0.02); (b) effects of affective response on duration/latency of the next exercise session (path b = 0.47, SE = 0.25, f2= 0.04); and (c) indirect effects of experimental condition on exercise outcomes via affective response (path ab = 0.11, SE = 0.06, f2= 0.10). Results provide modest preliminary support for a mediational pathway linking self-paced exercise, affective response, and exercise adherence.
authors.affiliation: 1 Brown University School of Public Health.
authors.forename: David M
authors.initials: DM
authors.lastname: Williams
authors.affiliation: 1 Brown University School of Public Health.|2 The Miriam Hospital.
authors.forename: Shira
authors.initials: S
authors.lastname: Dunsiger
authors.affiliation: 1 Brown University School of Public Health.
authors.forename: Jessica A
authors.initials: JA
authors.lastname: Emerson
authors.affiliation: 3 Warren Alpert Medical School of Brown University.
authors.forename: Chad J
authors.initials: CJ
authors.lastname: Gwaltney
authors.affiliation: 1 Brown University School of Public Health.
authors.forename: Peter M
authors.initials: PM
authors.lastname: Monti
authors.affiliation: 3 Warren Alpert Medical School of Brown University.
authors.forename: Robert
authors.initials: R
authors.lastname: Miranda
mesh_terms: D000293:Adolescent; D000328:Adult; D000339:Affect; D000368:Aged; D015992:Body Mass Index; D003299:Cooperative Behavior; D015444:Exercise / Q000523:psychology*; D005260:Female; D006339:Heart Rate; D006801:Humans; D008297:Male; D008875:Middle Aged; D009042:Motivation; D050177:Overweight / Q000523:psychology / Q000628:therapy*; D026684:Personal Autonomy; D055815:Young Adult
keywords: affective valence; ecological momentary assessment; exercise prescription