title: Comparisons of shoulder stabilization muscle activities according to postural changes during flexi-bar exercise.
abstract: [Purpose] The purpose of this study was to compare shoulder stabilization muscle activities according to postural changes during flexi-bar exercise. [Subjects] The subjects included 18 students (10 males, 8 females) at B University. [Methods] The subjects performed the following flexi-bar exercises: 1) medio-lateral oscillation with the 90° shoulder abduction, with the hand in the neutral position; 2) dorso-ventral oscillation with 90° shoulder flexion, with the hand in the neutral position; 3) superior-inferior oscillation with 90° shoulder flexion, with the 80° hand pronation. [Results] The activity of the serratus anterior showed significant differences between each position; however, activities of the upper trapezius and middle trapezius were not significantly different. [Conclusion] The results of this study indicate that posture control is important for selective strengthening of the serratus anterior muscle during flexi-bar exercises.
authors.affiliation: Department of Physical Therapy, Baekseok University, Republic of Korea.
authors.forename: Da Yeon
authors.initials: DY
authors.lastname: Choi
authors.affiliation: Department of Rehabilitation Medicine, Hanyang University Medical Center, Republic of Korea.
authors.forename: Sin Ho
authors.initials: SH
authors.lastname: Chung
authors.affiliation: Department of Physical Therapy, Baekseok University, Republic of Korea.
authors.forename: Jae Hun
authors.initials: JH
authors.lastname: Shim
keywords: Flexi-bar exercise; Muscle activity; Shoulder stabilization