title: Effects of a Pelvic Belt on the EMG Activity of the Abdominal Muscles during a Single-leg Hold in the Hook-lying Position on a Round Foam Roll.
abstract: [Purpose] This study investigated the effects of a pelvic belt on the electromyography (EMG) activity of the abdominal muscles during a single-leg hold in the hook-lying position on a round foam roll. [Subjects] Seventeen healthy female volunteers were recruited for this study. [Methods] The participants performed single-leg-hold exercises on a round foam roll with and without a pelvic belt. Surface EMG was recorded from the rectus abdominis (RA), internal oblique (IO), and external oblique (EO) bilaterally. [Results] The EMG activity of the bilateral RA, EO, and IO was significantly lower when the pelvic belt applied. [Conclusions] Our finding that the bilateral EO, IO, and RA muscles were less active with a pelvic belt during trunk-stabilizing exercises on an unstable surface suggests that the pelvic belt provided "form closure".
authors.affiliation: Department of Physical Therapy, Good Gang An Hospital.
authors.forename: Yu-Ri
authors.initials: YR
authors.lastname: Kim
authors.forename: Ji-Won
authors.initials: JW
authors.lastname: Kim
authors.forename: Duk-Hyun
authors.initials: DH
authors.lastname: An
authors.forename: Won-Gyu
authors.initials: WG
authors.lastname: Yoo
authors.forename: Jae-Seop
authors.initials: JS
authors.lastname: Oh
keywords: Abdominal muscle; Pelvic belt; Round foam roll