earticle

영어

This study aimed to investigate the effects of postural taping on the activation of scapular upward rotators in individuals with rounded shoulder posture (RSP). Twenty-five young females with RSP voluntarily participated in this study. While performing dynamic full-range shoulder flexion while holding a load adjusted to each participant's body weight, electromyographic (EMG) activity was recorded from the upper trapezius (UT), lower trapezius (LT), and serratus anterior (SA) under taped and non-taped conditions. The experimental protocol involved randomized application of four movement phases, reflecting concentric and eccentric contractions at angles below and above 90° of shoulder flexion. Statistical analysis revealed significant differences in EMG activity for all three muscles at shoulder flexion angles greater than 90° (p<.05). Additionally, EMG activity differed significantly between taped and non-taped conditions across all four movement phases, with greater differences observed at >90° than at <90°. However, no statistically significant differences were found between concentric and eccentric contractions (p>.05). These findings suggest that EMG activity is significantly higher beyond 90° of arm elevation, regardless of contraction type. postural taping for postural correction may therefore facilitate optimal activation of scapular upward rotators during arm elevation in young females with RSP.