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CompletedNCT05077761Updated Oct 10, 2023

Laser Therapy on Hamstring Muscle Among Young Adults

An interventional study of Active High-intensity laser therapy and Sham High-intensity laser therapy in Muscle Tightness, sponsored by Maharishi Markendeswar University (Deemed to be University). Completed at 1 site in India. Open to participants aged 18 Years to 30 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2023-10-10.

Sponsored by Maharishi Markendeswar University (Deemed to be University) · Not applicable, Interventional, and Treatment

Phase
Not applicable
Study type
Interventional
Enrollment
136
Allocation
Randomized
Ages
18 Years to 30 Years
Sex
All
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Study summary

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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Conditions studied

  • Muscle Tightness

Keywords

  • Flexibility
  • Hamstring
  • Laser therapy
  • Young adults
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In context

Lead sponsor

Maharishi Markendeswar University (Deemed to be University) is the lead sponsor of 41 studies on the registry; 4 are open to participants now.

Counted across the registry records on this site, refreshed daily.

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Who can participate

Ages eligible
18 Years to 30 Years
Sexes eligible
All
Accepts healthy volunteers
Yes

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • Asymptomatic young adults
  • Both gender
  • Tightness of hamstring muscles

Exclusion criteria

Exclusion Criteria:

  • Any other musculoskeletal disorder
  • Any disc pathology
  • Any nerve root irritation
  • Any surgical history or trauma
  • Malignancy
  • Pregnancy
  • Sensory dysfunctions
  • Cardiac pacemaker
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Study design

Phase
Not applicable
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Single (Participant)
Enrollment
136 participants (actual)

Study arms

  • Experimental
    High-intensity laser therapy

    77 participants will receive active high-intensity laser therapy interventions on hamstring muscle to improve the flexibility of muscle

    Device: Active High-intensity laser therapy

  • Sham comparator
    Sham High-intensity laser therapy

    77 participants will receive sham high-intensity laser therapy on hamstring muscle

    Device: Sham High-intensity laser therapy

Interventions

  • DeviceActive High-intensity laser therapy

    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- 1. Wavelength- 980 nm 2. Intensity/Power density- 3W/cm2 3. Emission mode- Continuous Emission 4. Energy (Joules)- 490 J 5. Irradiation time- 70 Sec on each point 6. Peak power- 15 Watt 7. Irradiation points- 09

  • DeviceSham High-intensity laser therapy

    Sham High-intensity laser therapy will be used in the contact method, without the laser beam irradiation over the hamstring muscle.

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What researchers measure

Primary outcomes

  1. Active Knee Extension Test

    Active knee extension test (AKET) is most reliable method to assess the hamstring tightness.

    Time frame: Changes will be measured at baseline, end of two week post intervention

  2. Sit and toe touch test

    Sit and toe touch test is used to assess the hamstring flexibility

    Time frame: Changes will be measured at baseline, end of two week post intervention

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Study locations

1 site
  • Maharishi Markandeshwar (M.M) Hospital, Mullana, Ambala, Haryana
    Ambāla, Haryana 133207, India
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References and documents

Publications

  • 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. PubMed 34444402 ↗
  • 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. PubMed 9285439 ↗
  • 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. PubMed 31991284 ↗
  • 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. PubMed 30607719 ↗
  • 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. PubMed 28341795 ↗
  • 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. PubMed 28194375 ↗

Individual participant data

Plan to share: No

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Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Oct 10, 2023, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
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Registry details

Key details

Study ID
NCT05077761
Lead sponsor
Maharishi Markendeswar University (Deemed to be University)
Responsible party
Asir John Samuel (Associate Professor, Maharishi Markendeswar University (Deemed to be University)) — Principal investigator
First posted
Oct 14, 2021
Start date
Jan 1, 2022
Primary completion
Aug 19, 2023
Completion
Oct 9, 2023
Last update
Oct 10, 2023

Study contacts

Adarsh K Srivastav, PhD Scholar
principal investigator · MMIPR, MM(DU)
Asir J Samuel, PhD
study director · MMIPR, MM(DU)

Oversight

Data monitoring committee
Yes
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is completed, as verified in Oct 2023. You cannot join it, but the record below documents what was studied.

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