Hip Muscle Strength and Ratio Differences in Delivery Workers With and Without Iliotibial Band Syndrome
Background: Delivery workers repeatedly get in and out of trucks and walk or run to deliver packages during work. Iliotibial band syndrome (ITBS) is a well-known non-traumatic overuse injury of the lateral side of the knee caused by frequent knee flexion and extension. Hip muscle strength is amon...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Korean Research Society of Physical Therapy
2023-02-01
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| Series: | Physical Therapy Korea |
| Subjects: |
| _version_ | 1797246847612354560 |
|---|---|
| author | Eun-su Lee Ui-jae Hwang Hwa-ik Yoo Il-kyu Ahn Oh-yun Kwon |
| author_facet | Eun-su Lee Ui-jae Hwang Hwa-ik Yoo Il-kyu Ahn Oh-yun Kwon |
| author_sort | Eun-su Lee |
| collection | DOAJ |
| description | Background: Delivery workers repeatedly get in and out of trucks and walk or run to deliver
packages during work. Iliotibial band syndrome (ITBS) is a well-known non-traumatic overuse
injury of the lateral side of the knee caused by frequent knee flexion and extension. Hip muscle
strength is among the factors that prevent lower extremity injuries. Although many studies
have examined the relationship between ITBS and hip muscle strengths, there was no study
comparing hip muscle strength and ratio between delivery workers with and without ITBS.
Objects: This study aimed to compare hip muscle strength and hip internal/external rotator
and adductor/abductor strength ratios between delivery workers with and without ITBS.
Methods: Fourteen delivery workers with ITBS matched inclusion criteria in the present study
among 20 participants. Because total sample size was required 28 subjects by G*power program
(ver. 3.1.9.4; University of Trier), 14 delivery workers without ITBS were recruited. Hip
muscle strengths were measured in a side-lying position using a Smart KEMA pulling sensor
(KOREATECH Co. Ltd.). An independent t-test was used to compare hip muscle strengths and
hip internal/external rotator and hip adductor/abductor strength ratios between delivery workers
with and without ITBS.
Results: The adductor/abductor strength ratio was significantly greater in delivery workers
without ITBS than in those with ITBS (p < 0.05). The strengths of the hip abductor, hip
adductor, hip internal rotator, hip external rotator, and the ratio of internal/external rotator
strengths were not significantly different between the delivery workers with and without ITBS
(p > 0.05).
Conclusion: This study’s findings showed that delivery workers with ITBS had significantly
lesser adductor/abductor strength ratio, while the strengths of the hip abductor and adductor
muscles did not differ significantly. These results suggest that adductor/abductor strength
ratio should be considered when evaluating and treating ITBS in delivery workers. |
| first_indexed | 2024-04-24T19:49:18Z |
| format | Article |
| id | doaj.art-32efd95aba914140bd77722aef95eee5 |
| institution | Directory Open Access Journal |
| issn | 1225-8962 2287-982X |
| language | English |
| last_indexed | 2024-04-24T19:49:18Z |
| publishDate | 2023-02-01 |
| publisher | Korean Research Society of Physical Therapy |
| record_format | Article |
| series | Physical Therapy Korea |
| spelling | doaj.art-32efd95aba914140bd77722aef95eee52024-03-25T02:49:29ZengKorean Research Society of Physical TherapyPhysical Therapy Korea1225-89622287-982X2023-02-01301152210.12674/ptk.2023.30.1.15Hip Muscle Strength and Ratio Differences in Delivery Workers With and Without Iliotibial Band SyndromeEun-su Lee0https://orcid.org/0000-0001-9722-1616Ui-jae Hwang1https://orcid.org/0000-0002-2050-5503Hwa-ik Yoo2https://orcid.org/0000-0002-5848-9633Il-kyu Ahn3https://orcid.org/0000-0003-2859-6486Oh-yun Kwon4https://orcid.org/0000-0002-9699-768XDepartment of Physical Therapy, The Graduate School, Yonsei UniversityDepartment of Physical Therapy, College of Software and Digital Healthcare Convergence, Yonsei UniversityDepartment of Physical Therapy, The Graduate School, Yonsei UniversityDepartment of Physical Therapy, The Graduate School, Yonsei UniversityDepartment of Physical Therapy, College of Software and Digital Healthcare Convergence, Yonsei UniversityBackground: Delivery workers repeatedly get in and out of trucks and walk or run to deliver packages during work. Iliotibial band syndrome (ITBS) is a well-known non-traumatic overuse injury of the lateral side of the knee caused by frequent knee flexion and extension. Hip muscle strength is among the factors that prevent lower extremity injuries. Although many studies have examined the relationship between ITBS and hip muscle strengths, there was no study comparing hip muscle strength and ratio between delivery workers with and without ITBS. Objects: This study aimed to compare hip muscle strength and hip internal/external rotator and adductor/abductor strength ratios between delivery workers with and without ITBS. Methods: Fourteen delivery workers with ITBS matched inclusion criteria in the present study among 20 participants. Because total sample size was required 28 subjects by G*power program (ver. 3.1.9.4; University of Trier), 14 delivery workers without ITBS were recruited. Hip muscle strengths were measured in a side-lying position using a Smart KEMA pulling sensor (KOREATECH Co. Ltd.). An independent t-test was used to compare hip muscle strengths and hip internal/external rotator and hip adductor/abductor strength ratios between delivery workers with and without ITBS. Results: The adductor/abductor strength ratio was significantly greater in delivery workers without ITBS than in those with ITBS (p < 0.05). The strengths of the hip abductor, hip adductor, hip internal rotator, hip external rotator, and the ratio of internal/external rotator strengths were not significantly different between the delivery workers with and without ITBS (p > 0.05). Conclusion: This study’s findings showed that delivery workers with ITBS had significantly lesser adductor/abductor strength ratio, while the strengths of the hip abductor and adductor muscles did not differ significantly. These results suggest that adductor/abductor strength ratio should be considered when evaluating and treating ITBS in delivery workers.hipiliotibial band syndromemuscle strength |
| spellingShingle | Eun-su Lee Ui-jae Hwang Hwa-ik Yoo Il-kyu Ahn Oh-yun Kwon Hip Muscle Strength and Ratio Differences in Delivery Workers With and Without Iliotibial Band Syndrome Physical Therapy Korea hip iliotibial band syndrome muscle strength |
| title | Hip Muscle Strength and Ratio Differences in Delivery Workers With and Without Iliotibial Band Syndrome |
| title_full | Hip Muscle Strength and Ratio Differences in Delivery Workers With and Without Iliotibial Band Syndrome |
| title_fullStr | Hip Muscle Strength and Ratio Differences in Delivery Workers With and Without Iliotibial Band Syndrome |
| title_full_unstemmed | Hip Muscle Strength and Ratio Differences in Delivery Workers With and Without Iliotibial Band Syndrome |
| title_short | Hip Muscle Strength and Ratio Differences in Delivery Workers With and Without Iliotibial Band Syndrome |
| title_sort | hip muscle strength and ratio differences in delivery workers with and without iliotibial band syndrome |
| topic | hip iliotibial band syndrome muscle strength |
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