Cardiovascular responses and tolerance to an orthostatic stress were examined in eight men before and after eight months of endurance exercise training. Following training, maximal oxygen consumption and blood volume were increased, and resting heart rate reduced. Orthostatic tolerance was reduced following training in all eight subjects. It was concluded that prolonged endurance training decreased orthostatic tolerance and this decrease in tolerance appeared associated with attenuated baroreflex sensitivity and alterations in autonomic balance secondary to an increased parasympathetic tone noted with training.
| Identifer | oai:union.ndltd.org:unt.edu/info:ark/67531/metadc277914 |
| Date | 05 1900 |
| Creators | Stevens, Glen Harold John |
| Contributors | Raven, Peter Bernard, 1940-, Gwirtz, Patricia A., Downey, H. Fred, Quist, Eugene, Gracy, Robert W., Gross, Guenter W., Schafer, Rollie |
| Publisher | University of North Texas |
| Source Sets | University of North Texas |
| Language | English |
| Detected Language | English |
| Type | Thesis or Dissertation |
| Format | xiii, 151 leaves : ill., Text |
| Rights | Public, Copyright, Copyright is held by the author, unless otherwise noted. All rights reserved., Stevens, Glen Harold John |
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