Obesity is a chronic disease of increasing prevalence, being currently considered a global epidemic, including children, adolescents, adults and the elderly of different nationalities and ethnicities, socioeconomic levels, education levels. Non-pharmacological therapeutic interventions, such as physical exercise and fitness healthy eating strategies seem to be increasingly studied and recommended for healthy weight loss. In addition, therapies that can complement the effect of exercise and diet for reducing body weight are considerate important strategies. Thus, experimental evidence shows that the use of laser therapy combined with exercise swimming was effective in controlling the lipid profile, reducing the mass of adipose tissue, suggesting increased metabolic activity and changes in lipid metabolism.

To investigate the effect of the use of therapeutic laser when associated to exercise like response to new therapy for weight loss and decrease of dyslipidemias levels.

Methods:

During 20 weeks, each patients will receive 3 session of exercise with duration of 1 hour. Each session of exercise will composed of aerobic exercise and resistence exercise. After training session, each patient will receive application of phototherapy during 16 minutes. The protocol of phototherapy appplication is described in link "interventions"

Inclusion Criteria:

• volunteers aged 20-40 years with a body mass index (BMI) ≥ 30 above, of both genders with primary obesity;

Exclusion Criteria:

• The criteria for inclusion are volunteers who use contraceptive use, cortisone, anti-epileptic drugs, history of kidney and heart disease, alcohol abuse, smoking, use of supplemental vitamins or secondary diagnosis of obesity.

After the pre-selection in the initial interview, the volunteers who contemplate all the inclusion criteria will be referred for clinical evaluation with an interdisciplinary health team and the electrocardiogram stress test to verify the release of the practice of physical exercises proposed by the project .