Related Experiment Videos
Acute reduction in maximal oxygen uptake after long-distance running
1Department of Human Performance & Sport, New Mexico Highlands University, Las Vegas 87701.
International Journal of Sports Medicine
|February 1, 1991
Summary
Endurance running significantly reduces maximal oxygen uptake (VO2max) and time to exhaustion. Post-half marathon exercise shows higher submaximal heart rate and rating of perceived exertion, indicating reduced heart rate reserve.
Area of Science:
- Exercise Physiology
- Sports Science
- Human Performance
Background:
- Marathon running is a demanding endurance event.
- Understanding physiological responses post-endurance exercise is crucial for training optimization.
Purpose of the Study:
- To investigate the physiological effects of a half-marathon run on subsequent treadmill exercise performance and physiological markers.
- To assess changes in oxygen uptake, heart rate, lactate levels, and perceived exertion.
Main Methods:
- Nine male marathon runners performed graded treadmill tests under control and post-half marathon conditions.
- Measurements included oxygen uptake (VO2), respiratory exchange ratio (RER), heart rate (HR), plasma lactate (PLa), and rating of perceived exertion (RPE).
Main Results:
- Post-half marathon exercise showed significantly lower VO2max, time to exhaustion, peak RER, and peak PLa compared to control.
- Submaximal VO2 was similar, but submaximal HR and RPE were higher post-run, indicating reduced heart rate reserve.
- Percentage of VO2max utilized during steady-state runs increased significantly after the half-marathon.
Conclusions:
- A half-marathon significantly impairs maximal exercise capacity and alters physiological responses during subsequent exercise.
- Runners exhibit reduced heart rate reserve and increased perceived exertion at equivalent submaximal workloads post-endurance event.
- These findings have implications for training periodization and recovery strategies in endurance athletes.