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INTENSITY SELECTION AND REGULATION USING THE OMNI SCALE OF PERCEIVED EXERTION DURING INTERMITTENT EXERCISE

Schafer, Mark (2007) INTENSITY SELECTION AND REGULATION USING THE OMNI SCALE OF PERCEIVED EXERTION DURING INTERMITTENT EXERCISE. Doctoral Dissertation, University of Pittsburgh. (Unpublished)

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Abstract

The primary purpose of this investigation was to determine if college age males and females (18 to 25 year old) can self-regulate exercise intensity during a 20 minute intermittent bout of aerobic exercise on the treadmill using the OMNI RPE scale. All subjects completed an estimation trial (EST) graded exercise test using the Bruce protocol to measure heart rate (HR), oxygen consumption (VO2), and rating of perceived exertion (RPE) every minute until exhaustion. Using data from the EST, target RPEs corresponding to 50% and 70% of VO2R were determined via regression analysis. A production trial (PROD) was then performed in which subjects titrated speed and grade on the treadmill to elicit the target RPEs corresponding to 50% and 70% of VO2R in counterbalance order. At an RPE corresponding to 50% of VO2R, HR and VO2 were significantly higher in the PROD compared to the EST for counterbalance order I (70% - 50%) (p less .001). However, there was no significant difference in HR and VO2 between the EST and PROD for counterbalance order II (50% - 70%) (p greater .05). When subjects exercised at an RPE corresponding to 70% of VO2R, the HR was significantly higher in the PROD compared to the EST for counterbalance order I (70% - 50%), (p less .05). However, there was no significant difference in HR between the EST and PROD trials for counterbalance order II (50% - 70%), (p greater.05). At an RPE corresponding to 70% of VO2R, there was no significant difference in the VO2 between the EST and PROD trials (p greater .05). Subjects were also able to perceptually differentiate between the two target RPEs corresponding to 50% and 70% of VO2R as indicated by the significant difference in HR (p less .05) and VO2 (p less .05) between the two prescribed PROD RPE intensities. The present investigation indicates that subjects were able to use RPE to self-regulate exercise intensity during 20 min of exercise at varying intensity when starting the exercise bout at the RPE corresponding to 50% of VO2R.


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Details

Item Type: University of Pittsburgh ETD
Status: Unpublished
Creators/Authors:
CreatorsEmailPitt UsernameORCID
Schafer, Markexercisephysiology@comcast.net
ETD Committee:
TitleMemberEmail AddressPitt UsernameORCID
Committee ChairGoss, Fredric Lgoss@pitt.eduGOSS
Committee MemberNagle-Stilly, Elizabethnagle@pitt.eduNAGLE
Committee MemberKim, Kevinkhkim@pitt.eduKHKIM
Committee MemberRobertson, Robert Jrrobert@pitt.eduRROBERT
Date: 27 September 2007
Date Type: Completion
Defense Date: 23 May 2007
Approval Date: 27 September 2007
Submission Date: 12 June 2007
Access Restriction: No restriction; Release the ETD for access worldwide immediately.
Institution: University of Pittsburgh
Schools and Programs: School of Education > Health, Physical, Recreational Education
Degree: PhD - Doctor of Philosophy
Thesis Type: Doctoral Dissertation
Refereed: Yes
Uncontrolled Keywords: Intensity Regulation; Intensity selection; Intermittent Exercise; OMNI RPE; Perceived Exertion
Other ID: http://etd.library.pitt.edu/ETD/available/etd-06122007-154210/, etd-06122007-154210
Date Deposited: 10 Nov 2011 19:47
Last Modified: 15 Nov 2016 13:44
URI: http://d-scholarship.pitt.edu/id/eprint/8081

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