PURPOSE: The purpose of this investigation was to examine the effect of knowledge of exercise duration on predicted, actual, and session ratings of leg muscle pain (RMP-Legs) during cycle ergometry. METHODS: Subjects were 36 females and 36 males, ages 18-30 yrs. Each subject performed one baseline graded exercise test to exhaustion and one isotime (20 minute) cycle trial at 70% VO2peak. Based on random assignment, the subject was told they would exercise for one of the following durations: a 20 minute trial (Accurate Duration; ACC-20), a 30 minute trial (Long Duration; LONG-30), or a 10 minute trial (Short Duration; SHORT-10). A predicted RMP-Legs was reported immediately prior to exercise. Actual RMP-Legs were reported at two min intervals during exercise. Session RMP-Legs was reported 10 min post-exercise. RESULTS: For the female sample, no differences were found in predicted RMP-Legs between knowledge of duration conditions. The interaction effect was significant. Actual RMP-Legs were higher in the SHORT-10 than LONG-30 condition at minutes 2, 4 and 6. Actual RMP-Legs were lower in the SHORT-10 than ACC-20 condition at minutes 14, 16, 18, and 20. Actual RMP-Legs were lower in the LONG-30 than the ACC-20 condition at minutes 4 and 20. Compared to the predicted RMP-Legs, actual RMP-Legs for the ACC-20 condition were lower at minutes 2, 4, and 6. Actual RMP-Legs for the LONG-30 condition were lower at minutes 2, 4, 6, 8, 10, and 12 compared to the predicted rating. Actual RMP-Legs for the SHORT-10 condition were lower at minutes 2, 12, 14, 16, 18, and 20 compared to the predicted rating. Session RMP-Legs did not differ. For the male sample, actual RMP-Legs were lower at minutes 2 and 4 compared to the predicted rating. There was no significant difference in RMP-Legs between conditions. Session RMP-Legs did not differ between knowledge of duration conditions. CONCLUSIONS: In general, pre-participation knowledge of exercise duration did not have an effect on predicted, actual, and session RMP-Legs for young recreationally active females and males. Future research should examine knowledge of exercise intensity as a possible teleoanticipatory factor that influences leg muscle pain responses during prolonged exercise.
| Identifer | oai:union.ndltd.org:PITT/oai:PITTETD:etd-08112010-132023 |
| Date | 20 September 2010 |
| Creators | Ledezma, Christina Maria |
| Contributors | David P. Hostler, Fredric L. Goss, Robert J. Robertson, Elizabeth F. Nagle |
| Publisher | University of Pittsburgh |
| Source Sets | University of Pittsburgh |
| Language | English |
| Detected Language | English |
| Type | text |
| Format | application/pdf |
| Source | http://etd.library.pitt.edu/ETD/available/etd-08112010-132023/ |
| Rights | unrestricted, I hereby certify that, if appropriate, I have obtained and attached hereto a written permission statement from the owner(s) of each third party copyrighted matter to be included in my thesis, dissertation, or project report, allowing distribution as specified below. I certify that the version I submitted is the same as that approved by my advisory committee. I hereby grant to University of Pittsburgh or its agents the non-exclusive license to archive and make accessible, under the conditions specified below, my thesis, dissertation, or project report in whole or in part in all forms of media, now or hereafter known. I retain all other ownership rights to the copyright of the thesis, dissertation or project report. I also retain the right to use in future works (such as articles or books) all or part of this thesis, dissertation, or project report. |
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