title: Correlation of the Y-Balance Test with Lower-limb Strength of Adult Women.
abstract: [Purpose] The purpose of this study was to elucidate the relationship between Y-balance test (YBT) distance and the lower-limb strength of adult women. [Subjects] Forty women aged 45 to 80 years volunteered for this study. [Methods] The participants were tested for maximal muscle strength of the lower limbs (hip extensors, hip flexors, hip abductors, knee extensors, knee flexors, and ankle dorsiflexors) and YBT distances in the anterior, posteromedial, and posterolateral directions. Pearson's correlation coefficient was used to quantify the linear relationships between YBT distances and lower-limb strength. [Results] Hip extensor and knee flexor strength were positively correlated with YBT anterior distance. Hip extensor, hip abductor, and knee flexor strength were positively correlated with the YBT posteromedial distance. Hip extensor and knee flexor strength were positively correlated with YBT posterolateral distance. [Conclusion] There was a weak correlation between lower-limb strength (hip extensors, hip abductors, and knee flexors) and dynamic postural control as measured by the YBT.
authors.affiliation: Department of Rehabilitation Science, Graduate School, Inje University, Republic of Korea.
authors.forename: Dong-Kyu
authors.initials: DK
authors.lastname: Lee
authors.affiliation: Department of Physical Therapy, Baekseok University, Republic of Korea.
authors.forename: Gyoung-Mo
authors.initials: GM
authors.lastname: Kim
authors.affiliation: Department of Physical Therapy, Sangji University, Republic of Korea.
authors.forename: Sung-Min
authors.initials: SM
authors.lastname: Ha
authors.affiliation: Department of Physical Therapy, College of Biomedical Science and Engineering, Inje University, Republic of Korea.
authors.forename: Jae-Seop
authors.initials: JS
authors.lastname: Oh
keywords: Adult women; Lower-limb strength; Y-balance test