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| Content Provider | Springer Nature : BioMed Central |
|---|---|
| Author | Endo, Suzuno Kato, Kinshi Otoshi, Kenichi Kaneko, Yota Tominaga, Ryoji Kaga, Takahiro Igari, Takahiro Sato, Ryohei Kobayashi, Kenji Konno, Shin-ichi Matsumoto, Yoshihiro |
| Abstract | Background Limited lower-extremity flexibility has long been debated as a physical risk factor contributing to low back pain in various populations. However, its impact on younger populations, particularly elementary school-aged softball players, remains unclear. This study aimed to explore the relationship between limited lower-extremity flexibility (iliopsoas, hamstrings, and quadriceps femoris) and low back pain in elementary school-aged softball players. Methods This cross-sectional study included 521 elementary school-aged softball players (469 males and 52 females; mean age, 10.7 years) who participated in annual medical evaluations from 2017 to 2019. Lower-extremity flexibility was assessed once during annual medical evaluations using the Thomas test for the iliopsoas, straight-leg-raise test for the hamstrings, and heel-to-buttock-distance test for the quadriceps. Additionally, low back pain during the previous season was evaluated through self-administered questionnaires distributed to participants and collected during medical check-ups. The prevalence of low back pain and its association with lower-extremity flexibility were investigated using univariate and multivariable analyses. In multivariable analysis, age, position, body mass index, and total practice time per week were included as explanatory factors. Results Overall, 16.9% (88/521) of the players experienced low back pain that required rest during the previous year. After adjustment for confounding factors (age, position, body mass index, and total practice time per week) with a logistic regression model, low back pain showed a significant association with quadriceps muscle tightness (odds ratio: 3.15, 95% confidence interval: 1.51ā6.56, Pā=ā.002). Conclusion Quadriceps femoris tightness may be a significant risk factor for low back pain in elementary school-aged softball players. These findings underscore the importance of assessing quadriceps femoris tightness to prevent low back pain in elementary school-aged softball players. Trial registrations Not applicable. |
| Related Links | https://bmcsportsscimedrehabil.biomedcentral.com/counter/pdf/10.1186/s13102-025-01106-5.pdf |
| Ending Page | 9 |
| Page Count | 9 |
| Starting Page | 1 |
| File Format | HTM / HTML |
| ISSN | 20521847 |
| DOI | 10.1186/s13102-025-01106-5 |
| Journal | BMC Sports Science, Medicine and Rehabilitation |
| Issue Number | 1 |
| Volume Number | 17 |
| Language | English |
| Publisher | BioMed Central |
| Publisher Date | 2025-03-27 |
| Access Restriction | Open |
| Subject Keyword | BMC Sports Science Medicine and Rehabilitation Sports Medicine Orthopedics Rehabilitation Medicine Low back pain Flexibility Quadriceps femoris Iliopsoas Hamstring Adolescent Softball |
| Content Type | Text |
| Resource Type | Article |
| Subject | Physical Therapy, Sports Therapy and Rehabilitation Rehabilitation Orthopedics and Sports Medicine |
| Journal Impact Factor | 2.1/2023 |
| 5-Year Journal Impact Factor | 2.3/2023 |
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