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Validation of a global positioning system with accelerometer for canoe/kayak sprint kinematic analysis
Rui António Fernandes1, Fernando Alacid2, André Branquinho Gomes3
1Research Unit in Sport and Physical Activity, Faculty of Sport Sciences and Physical Education, University of Coimbra, Coimbra, Portugal.
Sports Biomechanics
|November 24, 2021
Summary
This study validates Global Positioning System with accelerometer (GPS-Acc) units for measuring canoeing kinematics. GPS-Acc units accurately quantify boat velocity and stroke rate in sprint canoe and kayak races.
Area of Science:
- Sports Science
- Biomechanics
- Performance Analysis
Background:
- Accurate quantification of kinematic variables is crucial for optimizing athletic performance.
- Traditional video analysis can be time-consuming and complex.
- Emerging technologies like GPS-Acc units offer potential for efficient data collection.
Purpose of the Study:
- To validate the accuracy of Global Positioning System with an accelerometer (GPS-Acc) units for measuring kinematic variables in canoeing.
- To compare GPS-Acc data with traditional video analysis in sprint canoe and kayak races.
Main Methods:
- Eight sprint canoe and kayak races (200m and 500m) were recorded using both video cameras and GPS-Acc units.
- Data analysis involved a self-developed routine for GPS-Acc data and Bland-Altman analysis for comparing methodologies.
- Race distances were segmented into 50m or 100m splits for detailed kinematic analysis.
Main Results:
- No significant differences were found between GPS-Acc and video analysis for most kinematic variables.
- Minor discrepancies were observed in initial time and velocity measurements (first 50m).
- GPS-Acc units demonstrated high validity in measuring boat velocity and stroke rate.
Conclusions:
- GPS-Acc units provide a valid and accurate method for quantifying key kinematic variables in sprint canoeing.
- This technology enables rapid and precise measurement of boat velocity and stroke rate.
- While effective for overall kinematics, video analysis may still be preferred for intricate paddling technique assessments.
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