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A total of 154 healthy young individuals will be recruited by purposive sampling method to participate in a randomized, single-blinded, sham-controlled study. Recruited participants will be randomly dividing into two groups, the Active high-intensity laser therapy (a-HILT) group, and the Sham high-intensity laser therapy (s-HILT) group. The treatment duration will be 10 minutes per session on both lower limbs for each day for 3 days/week for 2 weeks. Hamstring muscle length will be assessed at baseline, end of the 2-week post-intervention period.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| High-intensity laser therapy | Experimental | 77 participants will receive active high-intensity laser therapy interventions on hamstring muscle to improve the flexibility of muscle |
|
| Sham High-intensity laser therapy | Sham Comparator | 77 participants will receive sham high-intensity laser therapy on hamstring muscle |
|
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Active High-intensity laser therapy | Device | High-intensity laser therapy will be used in the contact method, with the laser beam irradiated over the hamstring muscle. Dosage and parameters for the laser will be calculated. Parameters-
|
| Measure | Description | Time Frame |
|---|---|---|
| Active Knee Extension Test | Active knee extension test (AKET) is most reliable method to assess the hamstring tightness. | Changes will be measured at baseline, end of two week post intervention |
| Sit and toe touch test | Sit and toe touch test is used to assess the hamstring flexibility | Changes will be measured at baseline, end of two week post intervention |
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Inclusion Criteria:
Exclusion Criteria:
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| Name | Affiliation | Role |
|---|---|---|
| Adarsh K Srivastav, PhD Scholar | MMIPR, MM(DU) | Principal Investigator |
| Asir J Samuel, PhD | MMIPR, MM(DU) | Study Director |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Maharishi Markandeshwar (M.M) Hospital, Mullana, Ambala, Haryana | Ambāla | Haryana | 133207 | India |
| PubMed Identifier | Type | Citation | Retractions |
|---|---|---|---|
| 34444402 | Background | Cejudo A, Centenera-Centenera JM, Santonja-Medina F. The Potential Role of Hamstring Extensibility on Sagittal Pelvic Tilt, Sagittal Spinal Curves and Recurrent Low Back Pain in Team Sports Players: A Gender Perspective Analysis. Int J Environ Res Public Health. 2021 Aug 16;18(16):8654. doi: 10.3390/ijerph18168654. | |
| 9285439 | Background |
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| Sham High-intensity laser therapy | Device | Sham High-intensity laser therapy will be used in the contact method, without the laser beam irradiation over the hamstring muscle. |
|
| Jozwiak M, Pietrzak S, Tobjasz F. The epidemiology and clinical manifestations of hamstring muscle and plantar foot flexor shortening. Dev Med Child Neurol. 1997 Jul;39(7):481-3. doi: 10.1111/j.1469-8749.1997.tb07468.x. |
| 31991284 | Background | Medeiros DM, Aimi M, Vaz MA, Baroni BM. Effects of low-level laser therapy on hamstring strain injury rehabilitation: A randomized controlled trial. Phys Ther Sport. 2020 Mar;42:124-130. doi: 10.1016/j.ptsp.2020.01.006. Epub 2020 Jan 10. |
| 30607719 | Background | Dornelles MP, Fritsch CG, Sonda FC, Johnson DS, Leal-Junior ECP, Vaz MA, Baroni BM. Photobiomodulation therapy as a tool to prevent hamstring strain injuries by reducing soccer-induced fatigue on hamstring muscles. Lasers Med Sci. 2019 Aug;34(6):1177-1184. doi: 10.1007/s10103-018-02709-w. Epub 2019 Jan 3. |
| 28341795 | Background | Hughes T, Callaghan M. BET 2: LASER THERAPY IN THE TREATMENT OF ACUTE HAMSTRING MUSCLE INJURIES. Emerg Med J. 2017 Apr;34(4):266. doi: 10.1136/emermed-2017-206665.2. |
| 28194375 | Background | Ramos GA, Arliani GG, Astur DC, Pochini AC, Ejnisman B, Cohen M. Rehabilitation of hamstring muscle injuries: a literature review. Rev Bras Ortop. 2016 Dec 15;52(1):11-16. doi: 10.1016/j.rboe.2016.12.002. eCollection 2017 Jan-Feb. |