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Quantification the relationship between FITA scores and EMG skill indexes in archery
H Ertan1, A R Soylu, F Korkusuz
1Physical Education and Sports Department, Middle East Technical University, 06531, Turkey. hertan@metu.edu.tr
Summary
Electromyography (EMG) skill indexes derived from forearm muscle activity can effectively estimate archery performance. These novel indexes show significant correlations with FITA scores, aiding in technique assessment and talent selection.
Area of Science:
- Sports Science
- Biomechanics
- Motor Control
Background:
- Forearm electromyographic (EMG) data are recognized for their potential in assessing archery performance.
- Quantifying muscle activity during archery can provide objective measures of skill level.
Purpose of the Study:
- To develop and validate novel archery skill indexes using EMG data.
- To establish correlations between these EMG-based indexes and established archery performance metrics (FITA scores).
Main Methods:
- Involved elite archers, beginners, and non-archers.
- Quantified EMG activity of forearm muscles (Muscle flexor digitorum superficialis and Muscle extensor digitorum) around the clicker release.
- Developed four skill indexes (PreCASI, PostCASI, ASI, PostCASI2) based on processed EMG waveforms and normalized to maximum voluntary contraction.
Main Results:
- Significant negative correlations were found between the natural logarithms of the developed skill indexes and the rank of FITA scores (e.g., log(ASI): r=-0.74, p<0.0001).
- The indexes demonstrated varying degrees of correlation, indicating their potential for differentiating skill levels.
Conclusions:
- EMG skill indexes offer a promising, objective method for evaluating archery shooting techniques.
- These indexes can be utilized for monitoring archer progress and identifying talented individuals for selection.