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Acute Affective Responses to Varying Durations of Physical Activity for Overweight and Obese Adults

Michael, Julie Catherine (2012) Acute Affective Responses to Varying Durations of Physical Activity for Overweight and Obese Adults. Doctoral Dissertation, University of Pittsburgh. (Unpublished)

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Although participation in physical activity has multiple physical and psychological health benefits, many people continue to be inactive (Tucker, Welk, & Beyler, 2011). Affect, or expressed emotion, throughout an exercise session has been shown to influence compliance to regular physical activity (Williams et al., 2008). National guidelines recommend 30 minutes or more of daily moderate-intensity physical activity, which may be performed in one session or in multiple bouts of at least 10 minutes in duration (U.S. Department of Health and Human Services, 2008). The current study investigated positive affect (PA) and negative affect (NA) in response to moderate-intensity exercise for 10 minutes (EX-10), 40 minutes (EX-40), and a 40-minute resting session (REST). Healthy, overweight and obese women (n = 28, BMI = 32.59±4.25 kg/m2) participated in the exercise and resting sessions in a randomized, counterbalanced order. Findings showed that PA, but not NA, was significantly influenced by acute bouts of exercise across durations. Specifically, PA over time differed for EX-10 vs. REST and EX-40 vs. REST, respectively, but PA over time did not differ between EX-10 and EX-40. Additional analyses indicated that the intensity of positive affective responses after EX-40 also influenced subsequent caloric intake in an ad libitum eating task. Because both 10-minute and 40-minute bouts increased PA, both are viable options for improving PA and possibly increasing compliance for overweight and obese women within national activity recommendations. Furthermore, preliminary findings indicate that improvement in PA after longer durations of exercise may favorably influence subsequent eating behavior.


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Item Type: University of Pittsburgh ETD
Status: Unpublished
CreatorsEmailPitt UsernameORCID
Michael, Julie
ETD Committee:
TitleMemberEmail AddressPitt UsernameORCID
Committee ChairMarcus, Marsha D. marcusmd@upmc.eduMMARCUS
Committee MemberBovbjerg, Dana H.bovbjergdh@upmc.eduDHB15
Committee MemberDavis, Kelliann
Committee MemberJakicic, John M.jjakicic@pitt.eduJJAKICIC
Committee MemberKamarck, Thomas W. tkam@pitt.eduTKAM
Committee MemberMarsland, Anna L. marsland@pitt.eduMARSLAND
Date: 27 September 2012
Date Type: Publication
Defense Date: 25 June 2012
Approval Date: 27 September 2012
Submission Date: 29 July 2012
Access Restriction: No restriction; Release the ETD for access worldwide immediately.
Number of Pages: 110
Institution: University of Pittsburgh
Schools and Programs: Dietrich School of Arts and Sciences > Psychology
Degree: PhD - Doctor of Philosophy
Thesis Type: Doctoral Dissertation
Refereed: Yes
Uncontrolled Keywords: physical activity, positive affect, negative affect, obesity
Date Deposited: 28 Sep 2012 01:19
Last Modified: 19 Dec 2016 14:38


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