The Influence of Thumb Positions on Muscle Activation in Traditional Archery Performance
摘要
This study investigates how three different thumb positions—Shallow, Deep, and Deepest Single Hook—affect upper limb muscle activation and shooting accuracy in traditional archery. Using surface electromyography (sEMG), the root mean square (RMS) values of five key muscles were recorded and normalized against maximum voluntary contraction (MVC). Results showed that the Deepest Single Hook produced the lowest muscle activation while achieving the highest shooting accuracy. The Posterior Deltoid was consistently the most activated muscle across all positions. Findings suggest that the Deepest Single Hook offers biomechanical advantages and may enhance performance while reducing fatigue and injury risk.