The entire intervention will take place at the Physical Education campus of University, in the Cardiorespiratory and Metabolic Physiology Laboratory (LAFICAM). The recruitment and approach of the volunteers will occur through media dissemination, such as radio announcements, television programs, and social media through digital media. After the dissemination, volunteers will make contact via phone, email, or social media, and a preliminary registration will take place. After this registration, the researchers will verify which volunteers meet the inclusion criteria, and only then will the recruitment take place.
The volunteers will be invited to come to LAFICAM to be informed about the intervention program and then sign the informed consent form. Before starting the intervention program, all volunteers must present a medical certificate clearing them to participate in a physical exercise training program; once the certificate is submitted, initial tests and general evaluations will be conducted.
The initial evaluations will consist of a questionnaire, anthropometric and body composition assessment, and evaluation of the physical activity level. After the questionnaires are administered, a familiarization with the sensory perceptions of beetroot juice will be conducted. This familiarization is important to verify if the volunteers are fit to carry out the intervention.
The volunteers will be randomized into three groups: Group 1: the volunteers will ingest two shots containing 70 ml of beetroot juice with 400 mg of nitrate per day, one shot in the mornig and one shot at night, for 10 days; Group 2: this group will intake 70 ml of beetroot juice with 400 mg of nitrate every morning.
Group 3: this group will intake 70 ml of beetroot juice without nitrate for 10 days.
