Dissertations and Theses @ UNI


Open Access Thesis


Anoxemia; Exercise--Physiological aspects; Oxygen in the body; Women athletes--Health and hygiene;


The purpose of this study was to determine the effect of supramaximal exercise intensity on the maximal accumulated oxygen deficit during uphill treadmill running. The accumulated oxygen deficit is the difference between the predicted oxygen demand and the actual oxygen utilization, and was determined during three different supramaximal exercises. A group of eight well-trained female athletes (age= 19.6 ± 1.1 year; body weight= 55.5 ± 5.0 kg; peak oxygen uptake= 56.26 ± 5.55 ml/kg/min) performed three exercises at intensities that corresponded to 110%, 125%, and 140% of peak oxygen uptake (V02peak). Pretesting included determining V02peak and four bouts of discontinuous incremental submaximal treadmill running. The steady-state oxygen uptake at each submaximal bout was used to determine a regression line which was used to predict treadmill velocity during supramaximal exercise. The accumulated oxygen deficit was 63.17 ± 23.32 ml/kg at 110% of V02peak; 56.67 ± 22.81 ml/kg at 125% of V02peak; and 49.13 ± 17.41 ml/kg at 140% of V02peak. The accumulated oxygen deficits of the 110% and 125% trials were not significantly different (~ > .05), but both were significantly larger than the 140% trial. Exercise duration was 265 ± 149 s for the 110% trial, 138 ± 54 s for the 125% trial, and 82 ± 27 s for the 140% trial. The V02peak during the supramaximal exercise bouts were not significantly different between the three trials. Maximal heart rate during supramaximal exercise bouts were not significantly different between the 110% trial (186 ± 6 beats/min) and 125% trial (184 ± 5 beats/min), but were both significantly larger than the 140% trial (179 ± 5 beats/min). Theses data suggest that a 2.3 to 4.3 min exercise duration may be necessary to utilize completely the anaerobic capacity. It was concluded that the greatest accumulated oxygen deficit during graded treadmill running is determined using an intensity greater than 100% of V02peak but less than 140% of V02peak.

Year of Submission


Degree Name

Master of Arts


School of Health, Physical Education, and Leisure Services

First Advisor

Fred Kolkhorst

Second Advisor

Forrest Dolgener

Third Advisor

Larry Hensley


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Date Original


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