Effect of High-intensity Interval Training on Low-grade Systemic Inflammation in Obese Young Adults.

Background: Obesity is a multifactorial disease that affects 36% of the Mexican population; it is characterized by the excessive accumulation of adipose tissue in the body, mainly in the abdominal region, conditions that are closely linked to low-grade systemic inflammation (LGSI). Scientific evidence suggests that LGSI can be attenuated by the benefits of regular physical exercise, since such activity has the potential to decrease the concentrations of certain proinflammatory molecules, such as reactive C protein, tumor necrosis factor alpha and interleukin 6. Objective: To analyze the LGSI response when intervening with a high-intensity interval training in young obese adults between 18 to 30 years. Materials and methods: The present study is defined as a simple randomized clinical trial. Participants will be randomized into one of two groups of intervention; 1: High-intensity interval training (HIIT), and the control group with moderate-intensity continuous training (MICT). The interventions will be 3 times a week for 2 months, completing a total of 24 sessions. The HIIT group will carry out the activities at high intensity (85 to 95% maximum heart rate) aerobic type training; density of 1 minute at high interval followed by 2 minutes of low interval with a total time of 15 minutes (plus 5 more minutes of warm-up and 5 of cool-down exercises). While the MICT group will carry out the activities with a moderate intensity (60 to 75% maximum heart rate) aerobic type training reaching a total time of 25 to 45 minutes (considering 5 minutes of warm-up and 5 of cool-down exercises). Physical activity will be monitored using a Polar brand heart rate sensor (model H9). Anthropometric, biochemical, and inflammatory assessments will be monitored at baseline, at 4 weeks (mid-intervention), and at 8 weeks (end of intervention). Biochemical parameters will be determined by dry chemistry (Vitros 350), anthropometry by electrical bioimpedance (Inbody 370), and inflammatory marke