Year: 2004
Type: dissertation
Abstract: The purpose of this study was to determine if the heart rate recovery rate QIrRr) following a maximum exercise test can be used to accurately predict ma>rimum oxygen consumption (VOz-d.To that end, 30 subjects (aged 20.6 + 1.6 years) completed three exercise tests: two ma:rimum treadmill tests and one 20-meter shuttle run.VO2,r",, was measured during one maximum treadmill test via open circuit spirometry.After each test, the subject immediately assumed a supine position, and heart rate was measured immediately and every min thereafter for 5 min.Differences among the HrRr from each test were assessed with a 3 x 6 ANOVA.There was no significant difference noted between the three tests.A stepwise regression was used to develop a prediction equation for VOzro* from HrRr at min 1,2,3,4, and 5 post-exercise.Only treadmill speed (l = 0.374,p = 0.000) and shuttle run end speed (f = 0.521, p :0.000) but not HrRr were moderately good predictors of VOzro.. Several factors may have contributed to the inability to predict VOz-o from HrRr, such as subject posture following the test and the genetic component.This study also established that headgear used during indirect spirometry has no effect on HR during or after testing.It was also observed that the 20- meter shuttle run test underestimated VOz."* by approximately l0 ml.kg-l.min'l in novice subjects running individually.The ACSM metabolic equation for running provided an excellent method for estimating VO2,,-, (l: 0.995).In conclusion, HrRr was not useful for predicting VO2,,o* grven the parameters that defined this study.
Language: English
Subfield: Physiology (medical)
Field: Medicine
Domain: Health Sciences
Open Access status: green
OpenAlex ID: W2617667288