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dc.contributor.advisorFoster, Carl
dc.contributor.authorNyberg, Katelyn E.
dc.date.accessioned2012-10-10T19:02:27Z
dc.date.available2012-10-10T19:02:27Z
dc.date.issued2012-12
dc.identifier.urihttp://digital.library.wisc.edu/1793/63265
dc.description.abstractThe purpose of this study is to understand the effect of hypoxia during warm-up and competition on performance during cycle time trials. Methods: Seven well-trained subjects performed a VO2max test, two habituation trials, and four randomly ordered, single-blind 5 km time trials. Subjects performed HH (hypoxic WU/hypoxic TT), HN (hypoxic WU/normoxic TT), NH (normoxic WU/hypoxic TT), or NN (normoxic WU/hypoxic TT) with hypoxia (FiO2 =0.15) and normoxia (FiO2=0.21). Results: The hypoxic warm-up elicited a significant (p<.05) decrease in SaO2 (hypoxic SaO2=86%, normoxic SaO2=97%) and increases in RPE and HLa. During the TT significant differences in PO between hypoxic and normoxic TT began at 2.0 km, continuing for the duration of performance (NN PO @ 1,2,3,4,5 km=271, 271, 260, 256, 304W. NH PO=251, 239, 219, 212, 247W. HN PO=259, 258, 257, 250, 294. HH PO=238, 215, 212, 205, 245). There was no significant difference in initial PO. Discussion: Despite manipulating the pre-exercise template, PO is not reduced until afferent physiological feedback occurs within the time trial, ~2.0 km. Apparently, with changes in FiO2 subjects cannot distinguish this change, even if a low FiO2 is presented during warm-up, until physiological feedback mechanisms have time to act during the time trial.en
dc.language.isoen_USen
dc.subjectHypoxia (Water) - Monitoringen
dc.subjectBicycles and bicyclingen
dc.titleEffect of disparities of feedback on pacing in cycle time trialsen
dc.typeThesisen
thesis.degree.levelMSen
thesis.degree.disciplineClinical Exercise Physiologyen


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