The purpose of this study was to examine the effect of a six-week water-running program on the maintenance of cardiorespiratory performance ($\rm\dot VO\sb2$ max, ventilatory threshold, running economy); metabolic measurements of blood glucose, blood lactate and plasma norepinephrine; and body composition. Sixteen trained male runners ($\rm\dot VO\sb2$ max = $\rm 58.6\pm 3.6 ml\cdot kg\sp{-1}\cdot min\sp{-l})$ were assigned to one of two groups matched by $\rm\dot VO\sb2$ max, treadmill run (R) or water run (WR). Subjects participated in their respective training programs consisting of workouts of either 30 min at 90-100% $\rm\dot VO\sb2$ max or 60 min at 70-75% $\rm\dot VO\sb2$ max which were alternated daily, five days a week. Workouts for the R group were conducted on motorized treadmills in an air conditioned environment; WR subjects performed workouts in a swimming pool $\rm({\sim} 27\sp\circ C)$ while wearing a commercial flotation belt. Workout intensity was monitored by heart rate telemetry. / Following six weeks of workouts, no significant difference (p $>$ 0.05) was observed for treadmill $\rm\dot VO\sb2$ max between R $\rm (60.1\pm 3.6 ml{\cdot} kg\sp{-1}{\cdot} min\sp{-1})$ and WR $\rm(59.6\pm 5.4 ml{\cdot} kg\sp{-1}{\cdot} min\sp{-1}).$ Similarly, ventilatory threshold $\rm(48.2\pm 3.3 vs 47.4\pm 6.7 ml{\cdot} kg\sp{-1}{\cdot} min\sp{-1})$ and running economy $\rm(50.7\pm 2.0 vs 48.9\pm 2.2 ml{\cdot} kg\sp{-1}{\cdot} min\sp{-1}$ at 255 $\rm m{\cdot} min\sp{-1})$ were not different (p $>$ 0.05) between R and WR. Postexercise blood glucose (R = 8.5 $\pm$ 1.0; WR = 7.4 $\pm$ 1.1 mM) and blood lactate (R = 8.5 $\pm$ 1.9; WR = 8.3 $\pm$ 2.0 mM) were similar (p $>$ 0.05) between the two groups following six weeks of workouts, as was plasma norepinephrine (R = 7.4 $\pm$ 0.3; WR = 7.0 $\pm$ 0.5 ng $\cdot$ ml$\sp{-1}$). No significant group differences (p $>$ 0.05) were observed for total body weight, lean body mass or fat weight upon completion of the six-week exercise period. / It is concluded that water running may serve as an effective training alternative to land based running for the maintenance of physiological determinants of aerobic performance for up to six weeks among trained endurance athletes. / Source: Dissertation Abstracts International, Volume: 55-08, Section: B, page: 3186. / Major Professor: Robert J. Moffatt. / Thesis (Ph.D.)--The Florida State University, 1994.
| Identifer | oai:union.ndltd.org:fsu.edu/oai:fsu.digital.flvc.org:fsu_77227 |
| Contributors | Wilber, Randall Lawrence., Florida State University |
| Source Sets | Florida State University |
| Language | English |
| Detected Language | English |
| Type | Text |
| Format | 302 p. |
| Rights | On campus use only. |
| Relation | Dissertation Abstracts International |
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