Laser Therapy on Hamstring Muscle Among Young Adults

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

Status

Completed

Phases

Study type

Interventional

Source

ClinicalTrials.gov

Registry ID

NCT05077761

Enrollment

136

Registered

2021-10-14

Start date

2022-01-01

Completion date

2023-10-09

Last updated

2023-10-10

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Muscle Tightness

Keywords

Flexibility, Hamstring, Laser therapy, Young adults

Brief 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.

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.

Study design

Allocation

RANDOMIZED

Intervention model

PARALLEL

Primary purpose

TREATMENT

Masking

SINGLE (Subject)

Eligibility

Sex/Gender

ALL

Age

18 Years to 30 Years

Healthy volunteers

Yes

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

Design outcomes

Primary

Measure	Time frame	Description
Active Knee Extension Test	Changes will be measured at baseline, end of two week post intervention	Active knee extension test (AKET) is most reliable method to assess the hamstring tightness.
Sit and toe touch test	Changes will be measured at baseline, end of two week post intervention	Sit and toe touch test is used to assess the hamstring flexibility

Countries

India

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 8, 2026