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

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

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.

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.