Introduction: The popularity of blood flow restricted exercise has been increasing in recent years, with its impact in aerobic conditions on respiratory parameters in healthy young people still relatively unexplored. Previous studies have shown that aerobic exercise with blood flow restriction (AEBFR) achieves a certain oxygen consumption (V̇O2) and other metabolic parameters at a lower intensity compared to control exercise (CON), and therefore represents a potential of exercise for people who are unable to perform high loads for various reasons. Purpose: To monitor changes in respiratory and metabolic parameters during short-term stationary AEBFR and in recovery after it. Methods: 21 differently active men, aged between 18 and 35 years, underwent 3 tests on a cycloergometer. For the first time, stress testing was performed to determine V̇O2max and maximal heart rate. The second and third visits followed two exercise protocols, identical in structure, differing only in mode: AEBFR or CON. The protocol consisted of rest (5 min), an effort phase at loads of 40 and 60% V̇O2max (10 min), and a recovery phase (15 min). Results: The largest differences between AEBFR and CON were during the exercise phase in V̇O2 (p≤0,001), V̇CO2 (p<0,001), tpCO2 (p<0,05), V̇E (p<0,001), V̇E/V̇O2 (p<0,001), V̇E/V̇CO2 (p<0,05), RER (p<0,05) and exertion sensation (p<0,001). In the recovery phase, the gaps grew by the first five minutes, and then fell fairly quickly. Compared to resting values, V̇O2 in BFR was elevated for a longer period of time in recovery. Discussion and conclusion: We have proven that at a lower exercise intensity a higher V̇O2 can be achieved in AEBFR compared to control exercise. Anaerobic metabolism is activated earlier, as a result of which oxygen consumption remains elevated for a longer period of time after exertion. AEBFR can be a very useful way of exercising to achieve higher values of V̇O2 and consequently V̇O2max for people who cannot overcome high intensities for various reasons. When planning AEBFR, emphasis should also be placed on the cuff pressure, which must be calculated individually for each subject.
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