Effect of Low-level Laser Therapy (808nm) on Marker of Muscle Damage

Effect of Low-level Laser Therapy (808nm) on Marker of Muscle Damage: Randomized Double-blind Placebo-controlled Study

Status

Completed

Phases

Study type

Interventional

Source

ClinicalTrials.gov

Registry ID

NCT01808716

Enrollment

Registered

2013-03-11

Start date

2011-02-28

Completion date

2012-06-30

Last updated

2013-03-11

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

Conditions

Healthy

Keywords

low-level laser therapy, muscle damage

Brief summary

The study hypothesis is a decreased muscle damage induced by exercises when low-level laser therapy is applied on body muscles before exercises.

Detailed description

The study assessed males submitted to exercise to induce muscle damage. Creatine kinase levels in blood was quantified in order to identify the magnitude of muscle damage.

Interventions

DEVICELow-level laser therapy (808nm) and exercise

Use of low-level laser therapy(LLLT)or placebo-LLLT applied on biceps brachii for muscle damage recovery

Study design

Allocation

RANDOMIZED

Intervention model

PARALLEL

Primary purpose

TREATMENT

Masking

TRIPLE (Subject, Investigator, Outcomes Assessor)

Eligibility

Sex/Gender

MALE

Age

25 Years to 35 Years

Healthy volunteers

Inclusion criteria

* healthy males, * physically active, * aged between 25-40 years.

Exclusion criteria

* smoker, or * under medicine as anti-inflammatory and/or any drug that could affect normal and physiological conditions and lesion in upper limbs.

Design outcomes

Primary

Measure	Time frame	Description
Creatine Kinase analysis in blood	72 hours	Evaluation of Creatine Kinase (CK) levels in blood before, immediately after and 24h, 48h and 72h after protocol of exercise to induce muscle damage

Countries

Brazil

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026