The purpose of this study was to evaluate the relationships between heart rate (HR), oxygen consumption (VO$\sb2$) and mechanical Peak crank torque (PCT) and Average crank torque (ACT$\sb{60}$) variables in response to submaximal exercise employing a cycling race ergometer (RE), treadmill cycling (TC) and cycling in the field (FC). The work intensities identified as sub LT, LT and supra LT were equated on the basis of HR. Voltage signals from the crank arm were recorded as FM signals for subsequent representation of peak crank force (PCT) and average crank torque (ACT$\sb{60}$). Field VO$\sb2$ measures were done by Douglas bag procedure while an open circuit method was used for all laboratory testing. Heart rates were recorded with a Polar Electro Sport Tester PE3000. The observed results of field cycling demonstrated that laboratory conditions would overestimate the oxygen consumption in the field while force measurements suggested that laboratory conditions would underestimate mechanical work expenditures in the field. These differences become reduced at work intensities approximating VO$\sb{\rm 2max}$. It was concluded that HR can not always be used as an indicator of work stress when attempting to equate similar work loads performed under different conditions. (Abstract shortened by UMI.)
| Identifer | oai:union.ndltd.org:uottawa.ca/oai:ruor.uottawa.ca:10393/5883 |
| Date | January 1990 |
| Creators | Kenny, Glen |
| Contributors | Thoden, J., |
| Publisher | University of Ottawa (Canada) |
| Source Sets | Université d’Ottawa |
| Detected Language | English |
| Type | Thesis |
| Format | 122 p., application/pdf |
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