J Korean Phys Ther.  2020 Dec;32(6):335-340. 10.18857/jkpt.2020.32.6.335.

Influence of the Condition with and without External Support on the Strength of Hip Flexor in Supine in Subjects without Core Stabilization

• Jeon IC

• KMID: 2520091
• DOI: http://doi.org/10.18857/jkpt.2020.32.6.335

Abstract

Purpose
This study was performed to investigate the influence of the condition with and without external support on the strength of hip flexor in supine position in subjects without core stabilization. Hip flexor muscles are very functional in the hip joint structures. Therefore, it is essential to evaluate the strength of hip flexor in a clinical and precise way.
Methods
Twenty subjects participated in this study. The double bent leg-lower test was used to evaluate subjects without core stabilization. The strength of hip flexor muscles was evaluated in supine position, both with and without external support condition. The paired t-test was used to compare the strength of hip flexor muscles according to external support. The level of statistical significance was at α=0.05. The intra-rater reliability of the repeated measures of hip flexor strength was estimated by calculating the intra-class correlation coefficients (ICC).
Results
In subjects without core stabilization, the strength of hip flexor in supine was greater with external support than that without external support (p<0.05). In addition, the intra-rater reliability with an ICC (3, 1) of the strength measurement of hip flexor with external support was higher than that without external support.
Conclusion
In subjects without core stabilization, the condition with external support can contribute to the strength of hip flexor in supine position and the strength measurement of hip flexor should be considered with the condition with and without external support.

Keyword

Core stabilization; Hip joint; Rehabilitation