Laser Therapy on Hamstring Muscle Among Young Adults

High-intensity Laser Therapy on Hamstring Muscle Length Among Young Adults

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.

Study Overview

• Status: Completed
• Conditions: Muscle Tightness
• Intervention / Treatment: Device: Active High-intensity laser therapy; Device: Sham High-intensity laser therapy

• Study Type: Interventional
• Enrollment (Actual): 136
• Phase: Not Applicable

Contacts and Locations

Study Locations

• India
  • Haryana
    • Ambāla, Haryana, India, 133207
      • Maharishi Markandeshwar (M.M) Hospital, Mullana, Ambala, Haryana

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 18 years to 30 years (Adult)
• Accepts Healthy Volunteers: Yes

Description

Inclusion Criteria:

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

Exclusion Criteria:

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

Study Plan

How is the study designed?

Design Details

• Primary Purpose: Treatment
• Allocation: Randomized
• Interventional Model: Parallel Assignment
• Masking: Single

Number of Arms

2

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
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; 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-; Wavelength- 980 nm; Intensity/Power density- 3W/cm2; Emission mode- Continuous Emission; Energy (Joules)- 490 J; Irradiation time- 70 Sec on each point; Peak power- 15 Watt; Irradiation points- 09
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; Sham High-intensity laser therapy will be used in the contact method, without the laser beam irradiation over the hamstring muscle.

What is the study measuring?

Primary Outcome Measures

Outcome Measure	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

Collaborators and Investigators

• Sponsor: Maharishi Markendeswar University (Deemed to be University)
• Investigators: Principal Investigator: Adarsh K Srivastav, PhD Scholar, MMIPR, MM(DU); Study Director: Asir J Samuel, PhD, MMIPR, MM(DU)

Publications and helpful links

General Publications

• 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.
• 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.
• 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.
• 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.
• 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.
• 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.

Study record dates

Study Major Dates

• Study Start (Actual): January 1, 2022
• Primary Completion (Actual): August 19, 2023
• Study Completion (Actual): October 9, 2023

Study Registration Dates

• First Submitted: October 1, 2021
• First Submitted That Met QC Criteria: October 1, 2021
• First Posted (Actual): October 14, 2021

Study Record Updates

• Last Update Posted (Estimated): October 10, 2023
• Last Update Submitted That Met QC Criteria: October 9, 2023
• Last Verified: October 1, 2023

More Information

Terms related to this study

• Keywords: Young adults; Hamstring; Flexibility; Laser therapy
• Other Study ID Numbers: U1111-1269-9595

Plan for Individual participant data (IPD)

• Plan to Share Individual Participant Data (IPD)?: NO

Drug and device information, study documents

• Studies a U.S. FDA-regulated drug product: No
• Studies a U.S. FDA-regulated device product: No