Intermittent Hypoxic Training (IHT) Versus Hyperbaric Oxygen Therapy (HBOT) for Aerobic Performance

Enhanced physical performance is the goal of all professional and non-professional athletes. There are many intervention methods aim to enhance physical performance from 2 intervention related to change in the environment partial oxygen pressure have been demonstrated to have beneficial effect: IHT and HBOT.

This study offers one of the two interventions to athletes with a pre and post intervention objective evaluation of the physiological performance - Maximal exercise test for evaluating VO2MAX and ventilatory thresholds, time to exhaustion, 30 seconds Wingate test, agility test, muscle biopsy, blood tests, brain MRI, cognitive tests and exercise cognitive test.

After signing an informed consent form, eligible subjects will be randomized to one of the study groups at a ratio of 1:1. The IHT group will receive three hypoxic guided training sessions per week, according an individualized training protocol, 24 sessions in total.

The HBOT group will receive 40 daily hyperbaric sessions, five days per week. Each session will include 90 minutes exposure to 100% oxygen at 2ATA with a five-minute air break every 20 minutes. Three times per week, as the IHT group, the HBOT group will have a guided training session, according an individualized training protocol.

Both groups, IHT and HBOT, will have the same relative intensity guided training protocols for 8 weeks, to stimulate the same exercise load. The IHT group will train for 60 minutes, 3 times a week in a normobaric hypoxia environment, at O2 concentration of 15.2% that stimulates a 2500-2600m height. The HBOT group will train for 60 minutes after the HBOT sessions, 3 times per week, in a normobaric normoxic environment

Physical performance evaluations will be conducted on 3 different times post interventions - a day last intervention, 3 weeks after and 2 months after - in order to analyze the long term effect of each intervention.

• Cardiopulmonary exercise test (CPET) [Срок оценки: 8 weeks, 16 weeks]
• Time To Exhaustion [Срок оценки: Baseline, 11 weeks, 16 weeks]
• Wingate 30 seconds anaerobic test [Срок оценки: Baseline, 11 weeks, 16 weeks]
• Muscle biopsy for mitochondrial function [Срок оценки: Baseline, 11 weeks]
• Blood test for evaluation of CBC [Срок оценки: Baseline, 11 weeks, 16 weeks]
• Blood test for evaluation of HIF-1α [Срок оценки: Baseline, 7 weeks, 8 weeks, 11 weeks, 16 weeks]
• Blood test for evaluation of Telomeres length [Срок оценки: Baseline,11 weeks, 16 weeks]
• Blood test for evaluation of mitochondrial function [Срок оценки: Baseline,11 weeks]