title: Effects of vibratory stimulations on maximal voluntary isometric contraction from delayed onset muscle soreness.
abstract: [Purpose] The aim of this study was to investigate the effect of vibratory stimulation on maximal voluntary isometric contraction (MVIC) from delayed onset muscle soreness (DOMS). [Subjects] Sixty healthy adults participated in this study. The exclusion criteria were orthopedic or neurologic disease. [Methods] The researchers induced DOMS in the musculus extensor carpi radialis longus of each participant. Subjects in the control group received no treatment. The ultrasound group received ultrasound treatment (intensity, 1.0 W/cm(2;) frequency 1 MHz; time, 10 minutes). The vibration group received vibration stimulation (frequency, 20 MHz; time, 10 minutes). Maximal voluntary isometric contraction (MVIC) was recorded at baseline, immediately after exercise, and 24, 48, and 72 hours after exercise. [Results] MVIC measurements showed statistically significant differences in the vibration group compared with the control group. [Conclusion] Vibratory stimulation had a positive effect on recovery of muscle function from DOMS.
authors.affiliation: Department of Physical Therapy, Daegu University Graduate School of Physical Therapy, Daegu University.
authors.forename: Hyung-Woo
authors.initials: HW
authors.lastname: Koh
authors.forename: Sung-Hyoun
authors.initials: SH
authors.lastname: Cho
authors.forename: Cheol-Yong
authors.initials: CY
authors.lastname: Kim
authors.forename: Byung-Jun
authors.initials: BJ
authors.lastname: Cho
authors.forename: Jin-Woo
authors.initials: JW
authors.lastname: Kim
authors.forename: Kak Hwang
authors.initials: KH
authors.lastname: Bo
keywords: Isometric contraction; Ultrasound; Vibratory stimulation