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Optimal geometry for oval sprint tracks
1Dept. of Biomedical Engineering, Johns Hopkins University, Baltimore, Maryland.
Journal of Biomechanics
|January 1, 1990
Summary
The optimal running track shape is a perfect circle, minimizing runner velocity deficits. This research models runner speed on oval tracks with varying aspect ratios.
Area of Science:
- Sports Science
- Biomechanics
- Athletic Track Design
Background:
- Understanding the impact of running track geometry on runner performance is crucial for optimizing athletic events.
- Oval running tracks are common, but their aspect ratio (turn length vs. straightaway length) can influence runner efficiency.
Purpose of the Study:
- To model runner velocity on oval tracks with varying aspect ratios.
- To determine the optimal track shape that minimizes velocity deficits for a composite runner.
Main Methods:
- Developed mathematical equations based on experimental data to model runner dynamics.
- Calculated velocity deficits for a composite runner with a specified top speed during acceleration and centripetal phases.
- Analyzed several common track sizes across a range of aspect ratios.
Main Results:
- Runner velocity is affected by the track's aspect ratio.
- Significant velocity deficits were calculated for various common track configurations.
- A perfect circle track shape was predicted to be optimal for minimizing these deficits.
Conclusions:
- The geometric design of running tracks significantly influences runner performance.
- A circular track design offers the theoretical advantage of minimizing runner velocity deficits, suggesting it as the optimal shape under the study's assumptions.