Electromyographical comparisons of upper extremity muscles during backhand clear stroke of male badminton players

The backhand clear is a critical stroke in badminton, requiring precise technique and significant muscle activation to maintain control and gain strategic advantage during rallies. This study aims to investigate the Electromyographical (EMG) patterns of muscle activation during the backhand clear stroke, focusing on ten male badminton players (ages 18-21). Using the BTS FREEEMG system, EMG signals were collected from five key muscles: brachioradialis (BR), triceps (TC), biceps (BIC), trapezius (TRP), and posterior deltoid (PD). Each participant performed the backhand clear stroke while EMG data was recorded and analysed to compare muscle activation levels. The results showed that the trapezius muscle exhibited the highest mean activation (15.4±1.20), followed by the posterior deltoid and triceps, while the brachioradialis showed significant activation compared to other muscles (p = 0.017). Pairwise comparisons indicated significant differences in activation between the trapezius and other muscles, suggesting its predominant role in the stroke. These findings highlight the importance of the trapezius in stabilizing and executing the backhand clear stroke, providing valuable insights for training and rehabilitation programs aimed at optimizing muscle engagement and preventing injury.