Reliability of horizontal force-velocity-power profiling during short sprint-running accelerations using radar
Kim David Simperingham1,2, John B Cronin1,3, Simon N Pearson1,4
1a Sports Performance Research Institute New Zealand (SPRINZ) , Auckland University of Technology , Auckland , New Zealand.
Sports Biomechanics
|November 11, 2017
Summary
Radar technology offers reliable sprint performance profiling. Averaging results from at least two sprints improves measurement accuracy, especially for force-related variables and short distances.
Area of Science:
- Sports Science
- Biomechanics
- Athletic Performance Analysis
Background:
- Radar technology enables horizontal force-velocity-power profiling in sprint running.
- Assessing the reliability of radar-derived data is crucial for practical applications in sports science.
Purpose of the Study:
- To evaluate the intra-day and inter-day reliability of radar-derived sprint profiling.
- To identify specific variables and sprint distances where reliability might be lower.
Main Methods:
- Twenty-seven participants performed three 30m sprints for intra-day reliability.
- Nine participants completed testing over four separate days for inter-day reliability.
- Intraclass correlation coefficient (ICC) and coefficient of variation (CV) were used to assess reliability.
Main Results:
- Most kinematic and kinetic variables showed acceptable reliability (ICC ≥ 0.75, CV ≤ 10%).
- Initial 10m split times and some horizontal force variables exhibited only moderate reliability (ICC = 0.49-0.74).
- Averaging two sprint trials improved reliability for most variables, except the relative slope of the force-velocity relationship.
Conclusions:
- Radar-derived sprint profiling is largely reliable for athletic performance assessment.
- Averaging sprint trials is recommended to enhance measurement consistency, particularly for force-based metrics and shorter sprint segments.
- Practitioners should consider trial averaging for robust force-velocity-power profiling.
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