Subjects
In this study, 106 volunteer healthy individuals between the ages of 18-35 participated in the laboratory of Sinop University, Türkeli Vocational School. Inclusion criteria for the study; (1) Being healthy between the ages of 18-35, (2) Volunteering to participate in the study, (3) Signing a voluntary consent form, (4) Being in the inactive category according to the International Physical Activity Questionnaire. Exclusion criteria from the study; (1) Having regular sports habits, (2) Being pregnant or suspected of pregnancy, (3) Disability of the lower or upper extremities, (4) Acute wound or infection in the ear. (5) Those who are in the very minimally active or active category according to the International Physical Activity questionnaire, (6) Presence of any chronic disease and drug use for this condition, (7) Current history of respiratory system disease, and receiving treatment, (8) existing cardiac system disease history and receiving treatment, (9) existing hearing system disease history and receiving treatment.
After informing the participants of the study in detail about the procedure to be applied, an international physical activity questionnaire was first applied to the volunteers who signed the consent form (Van Poppel et al., 2010). Out of 106 people evaluated for eligibility, 4 people with regular sports habits, 5 people in the active category according to the results of the international physical activity survey, 7 people who refused to participate in the study, and 90 participants were continued. The gender, age, height, weight and body mass indexes of the participants who met the inclusion criteria were recorded and randomly divided into 3 groups. No one left the study for any reason after randomization.
A 4-day protocol was used in the study. Cycling exercise was done with maximum performance for 30 minutes under the same watt load for four days. At the end of the cycling exercise, non-invasive auricular stimulation was performed with the Vagustim device according to the groups of the participants. The distances they traveled were recorded for comparison. It was evaluated with 7 different parameters before and after cycling exercise and at the end of vagus nerve stimulation every day.