title: Electromyographic Activities of Trunk Muscles Due to Different Exercise Intensities during Pulley-based Shoulder Exercises on an Unstable Surface.
abstract: [Purpose] This study examined the relationship between core stability and exercise intensity during a pulley-based shoulder exercise (PBSE) on an unstable support surface. [Subjects] Twenty healthy college students enrolled in this study. [Methods] Surface EMG was carried out in twenty healthy adult men. The electromyographic activities of the rectus abdominis (RA), erector spinae (ES), exercises with 14 kg or 26 kg of resistance and external oblique (EO) muscles during pulley-based shoulder on an unstable support surface (USS) were compared. [Results] The EMG signals of the RA, ES, and EO did not increase with increasing exercise resistance. [Conclusion] Increasing the exercise intensity to increase the core stability during PBSE on a USS may be ineffective.
authors.affiliation: Department of Physical Therapy, Sahmyook University, Republic of Korea.
authors.forename: Jae Yun
authors.initials: JY
authors.lastname: Cha
authors.affiliation: Department of Physical Therapy, Sahmyook University, Republic of Korea.
authors.forename: Doo Chul
authors.initials: DC
authors.lastname: Shin
authors.affiliation: Department of Physical Therapy, Sahmyook University, Republic of Korea.
authors.forename: Seung Ho
authors.initials: SH
authors.lastname: Shin
authors.affiliation: Department of Physical Therapy, Sahmyook University, Republic of Korea.
authors.forename: Myung Mo
authors.initials: MM
authors.lastname: Lee
authors.affiliation: Department of Physical Therapy, Sahmyook University, Republic of Korea.
authors.forename: Kyoung Jin
authors.initials: KJ
authors.lastname: Lee
authors.affiliation: Department of Physical Therapy, Sahmyook University, Republic of Korea.
authors.forename: Chang Ho
authors.initials: CH
authors.lastname: Song
keywords: Ankle strategy; Core stability; Electromyography