Relationship Between Strength of Hip Muscles and Performance of Close Kinetic Chain Dynamic Lower Extremity Stability Test
Background: The hip muscle plays various roles. Several types of functional performance tests are used for the assessment of patients with various lower extremity injuries. Hip muscle functions are important to test the performance of maintaining the spine, pelvic, and leg during bridging exercis...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Korean Research Society of Physical Therapy
2020-11-01
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| Series: | Physical Therapy Korea |
| Subjects: |
| Summary: | Background: The hip muscle plays various roles. Several types of functional performance
tests are used for the assessment of patients with various lower extremity injuries. Hip muscle
functions are important to test the performance of maintaining the spine, pelvic, and leg
during bridging exercise. We designed a novel functional performance test tool, which we
named close kinetic chain dynamic lower extremity stability (CKCLE) test to assess hip muscle
functions.
Objects: The purpose of this study was to determine the relationship between CKCLE test and
hip extensor, external rotator, and abductor strengths.
Methods: Twenty-two subjects were recruited in the present study (13 males and 9 females).
The hip extensor, external rotator, and abductor muscle strengths were measured using a
Smart KEMA strength sensor. When the examiner said “Go”, the subject performed the CKCLE
test by moving one leg from the floor and touching the opposite knee and then return to the
floor while maintaining the bridging position. The subjects attempted as many “touches” as
possible in the allotted time (20 seconds) during the maximal tests. The correlation between
the hip muscle (extensor, external rotator, and abductor) strength of the supporting leg and
the number of CKCLE tests performed in 20 seconds was determined using the Pearson correlation.
Results: Hip extensor (r = 0.626, p < 0.05), hip external rotator (r = 0.616, p < 0.05), and
hip abductor muscle strengths (r = 0.475, p < 0.05) positively correlated with the number of
CKCLE tests performed.
Conclusion: We designed a CKCLE test and found that performance in the test correlated
with hip extensor, external rotator, and abductor muscle strengths. The result suggests that
the CKCLE test can be applied as a performance test to assess the functions of the hip extensor,
external rotator, and hip abductor muscles. |
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| ISSN: | 1225-8962 2287-982X |