Effects of the Low-level Laser Therapy (LLLT) on Muscle Strength (MS) of the Patients With Kidneys Failure (KF)

The low-level laser therapy (LLLT) has been used in many inflammatory disorders. More recently the LLLT was associated with an improvement in the muscle strength and endurance. But, these effects were described only in health or athletic individuals. In this randomized and controlled clinical trails, the investigators will study the effects of LLLT on muscle strength of the patients with kidneys failure on long time hemodialysis treatment. Additionally, investigators will explore three different intensities up the muscle strength.