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Grouping of runners during marathon competition
1Laboratory for Exercise Physiology, Faculty of Education, Toyama University, Japan.
British Journal of Sports Medicine
|December 1, 1987
Summary
Marathon runners often form performance-enhancing clusters during races. Elite athletes exhibit the most significant clustering, maintaining specific distances and avoiding direct proximity to competitors.
Area of Science:
- Sports Science
- Biomechanics
- Human Performance
Background:
- Marathon runners frequently exhibit clustering behavior during competitions.
- This phenomenon is hypothesized to be a strategy for performance enhancement.
Purpose of the Study:
- To investigate the density and characteristics of runner clusters in marathon races.
- To analyze the spatial dynamics and proximity maintenance within these clusters.
Main Methods:
- Analysis of international marathon race data (Fukuoka and Tokyo).
- Quantification of runner density (runners/m2) at specific paces (4.8-5.6 m/s).
- Measurement of inter-runner distances and angular positions within clusters.
Main Results:
- Runner densities ranged from 0.44 to 0.80 runners/m2 for elite marathoners at high speeds.
- Clustering was most pronounced among elite performers.
- Approximately 95% of clustered runners maintained 0.5-1.5 m distance and avoided +/- 15 degrees relative positioning.
Conclusions:
- Runner clustering is a distinct spatial behavior in marathons, particularly among elites.
- Specific spacing (0.5-1.5 m) and angular avoidance (+/- 15 degrees) characterize these clusters.
- Further research into clustering could inform strategies for improving marathon performance.