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    Intrinsic Motivation in Two Exercise Interventions: Associations With Fitness and Body Composition

    233475_233475_AFD.pdf (336.9Kb)
    Access Status
    Open access
    Authors
    Thøgersen-Ntoumani, Cecilie
    Shepherd, S.
    Ntoumanis, Nikos
    Wagenmakers, A.
    Shaw, C.
    Date
    2015
    Type
    Journal Article
    
    Metadata
    Show full item record
    Citation
    Thøgersen-Ntoumani, C. and Shepherd, S. and Ntoumanis, N. and Wagenmakers, A. and Shaw, C. 2015. Intrinsic Motivation in Two Exercise Interventions: Associations With Fitness and Body Composition. Health Psychology. 35 (2): 195-198.
    Source Title
    Health Psychology
    DOI
    10.1037/hea0000260
    ISSN
    0278-6133
    School
    School of Psychology and Speech Pathology
    Remarks

    Copyright © 2015 American Psychological Association. This article may not exactly replicate the authoritative document published in the APA journal. It is not the copy of record.

    URI
    http://hdl.handle.net/20.500.11937/29900
    Collection
    • Curtin Research Publications
    Abstract

    Objective: To examine the motivational process through which increases in aerobic capacity and decreases in total body fat are achieved during high-intensity intermittent training (HIT) and moderate-intensity continuous training (MICT) interventions. Method: Eighty-seven physically inactive adults (65% women, age = 42 ± 12, BMI = 27.67 ± 4.99 kg/m2) took part in a 10-week randomized intervention testing group-based HIT, operationalized as repeated sprints of 15-60 s interspersed with periods of recovery cycling = 25 min/session, 3 sessions/wk-1, or MICT, operationalized as cycling at constant workload of 65% maximum aerobic capacity (VO2max, 30-45 min/session-1, 5 sessions/wk-1. Assessments of VO2max and total body fat were made pre- and postintervention. Motivation variables were assessed midintervention and class attendance was monitored throughout. Path analysis was employed, controlling for treatment arm and baseline values of VO2max and total body fat. Results: The 2 groups differed in adherence only, favoring HIT. Baseline VO2max predicted intrinsic motivation midintervention. Intrinsic motivation predicted program adherence, which in turn predicted increases in VO2max and decreases in total body fat by the end of the study. Conclusion: Intrinsic motivation in HIT and MICT is positively linked to adherence to these programs, which can facilitate improvements in fitness and body composition.

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