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The Independent Effect of Self-Selected versus Imposed Exercise Intensity on Affect

Haile, Luke (2011) The Independent Effect of Self-Selected versus Imposed Exercise Intensity on Affect. Doctoral Dissertation, University of Pittsburgh.

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    Abstract

    Background: The affective response to self-selected and imposed exercise intensities of differing physical stimuli has been previously compared in adults and children. Purpose: The primary purpose of this investigation was to compare the affective response to self-selected (SS) and imposed (IMP) exercise of the same intensity in young, recreationally active adult males. The secondary purpose was to determine if a significant proportion of subjects self-selected exercise intensity above 50% of oxygen uptake reserve (VO2R). Methods: 32 males [mean(SD) age 22.3(2.2), VO2PEAK 3.38(0.59)] participated in the investigation. All subjects performed a load-incremented VO2PEAK test and a 20-min, SS exercise trial on a cycle ergometer. One week later, subjects performed the IMP exercise trial. Subjects in the experimental group (n=16) were unaware that the IMP intensity was the same as that previously self-selected. These subjects were told the intensity was „selected by the investigators.&#8223; Control subjects (n=16) were aware that the intensity of the IMP trial was the same as the SS trial. The affective response measured using Feeling Scale ratings (FS-R) was obtained prior to, during, and following the SS and IMP trials. ÄFS-R values, calculated by subtracting FS-R estimated during the SS trial from that of the IMP trial at each time point, were analyzed using a mixed-model ANOVA. The proportion of subjects who self-selected intensities above 50% VO2R was tested using a chi-squared analysis. Results: The ANOVA revealed no significant main effects or interaction. The chi-squared analysis revealed that a significant (p<0.05) proportion of subjects (28 of 33) self-selected exercise intensities above 50% VO2R. Conclusions: In the current investigation, theTHE INDEPENDENT EFFECT OF SELF-SELECTED VERSUS IMPOSED EXERCISE INTENSITY ON AFFECTLuke Haile, Ph. D.University of Pittsburgh, 20105affective response to SS and IMP exercise intensities of the same physical stimuli was similar, although there was a considerable amount of inter-individual variability. However, it was found that most subjects self-selected exercise intensities above a level determined by the American College of Sports Medicine to elicit health-fitness benefits. The prescription of SS exercise may be appropriate for young, recreationally active adult males.


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    Item Type: University of Pittsburgh ETD
    ETD Committee:
    ETD Committee TypeCommittee MemberEmail
    Committee ChairGoss, Fredric L.
    Committee MemberNagle, Elizabeth F.
    Committee MemberAndreacci, Joseph L.
    Committee MemberRobertson, Robert J.
    Title: The Independent Effect of Self-Selected versus Imposed Exercise Intensity on Affect
    Status: Unpublished
    Abstract: Background: The affective response to self-selected and imposed exercise intensities of differing physical stimuli has been previously compared in adults and children. Purpose: The primary purpose of this investigation was to compare the affective response to self-selected (SS) and imposed (IMP) exercise of the same intensity in young, recreationally active adult males. The secondary purpose was to determine if a significant proportion of subjects self-selected exercise intensity above 50% of oxygen uptake reserve (VO2R). Methods: 32 males [mean(SD) age 22.3(2.2), VO2PEAK 3.38(0.59)] participated in the investigation. All subjects performed a load-incremented VO2PEAK test and a 20-min, SS exercise trial on a cycle ergometer. One week later, subjects performed the IMP exercise trial. Subjects in the experimental group (n=16) were unaware that the IMP intensity was the same as that previously self-selected. These subjects were told the intensity was „selected by the investigators.&#8223; Control subjects (n=16) were aware that the intensity of the IMP trial was the same as the SS trial. The affective response measured using Feeling Scale ratings (FS-R) was obtained prior to, during, and following the SS and IMP trials. ÄFS-R values, calculated by subtracting FS-R estimated during the SS trial from that of the IMP trial at each time point, were analyzed using a mixed-model ANOVA. The proportion of subjects who self-selected intensities above 50% VO2R was tested using a chi-squared analysis. Results: The ANOVA revealed no significant main effects or interaction. The chi-squared analysis revealed that a significant (p<0.05) proportion of subjects (28 of 33) self-selected exercise intensities above 50% VO2R. Conclusions: In the current investigation, theTHE INDEPENDENT EFFECT OF SELF-SELECTED VERSUS IMPOSED EXERCISE INTENSITY ON AFFECTLuke Haile, Ph. D.University of Pittsburgh, 20105affective response to SS and IMP exercise intensities of the same physical stimuli was similar, although there was a considerable amount of inter-individual variability. However, it was found that most subjects self-selected exercise intensities above a level determined by the American College of Sports Medicine to elicit health-fitness benefits. The prescription of SS exercise may be appropriate for young, recreationally active adult males.
    Date: 10 January 2011
    Date Type: Completion
    Defense Date: 10 August 2010
    Approval Date: 10 January 2011
    Submission Date: 06 January 2011
    Access Restriction: No restriction; The work is available for access worldwide immediately.
    Patent pending: No
    Institution: University of Pittsburgh
    Thesis Type: Doctoral Dissertation
    Refereed: Yes
    Degree: PhD - Doctor of Philosophy
    URN: etd-01062011-140021
    Uncontrolled Keywords: affective valence; Preferred exercise intensity; prescribed exercise intensity
    Schools and Programs: School of Education > Health, Physical, Recreational Education
    Date Deposited: 10 Nov 2011 14:30
    Last Modified: 15 Feb 2012 13:58
    Other ID: http://etd.library.pitt.edu/ETD/available/etd-01062011-140021/, etd-01062011-140021

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