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Journal Articles Journal of Physiological Anthropology Year : 2022

Effects of short-term repeated sprint training in hypoxia or with blood flow restriction on response to exercise

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Abstract

This study compared the effects of a brief repeated sprint training (RST) intervention performed with bilateral blood flow restriction (BFR) conditions in normoxia or conducted at high levels of hypoxia on response to exercise. Thirty-nine endurance-trained athletes completed six repeated sprints cycling sessions spread over 2 weeks consisting of four sets of five sprints (10-s maximal sprints with 20-s active recovery). Athletes were assigned to one of the four groups and subjected to a bilateral partial blood flow restriction (45% of arterial occlusion pressure) of the lower limbs during exercise (BFRG), during the recovery (BFRrG), exercised in a hypoxic room simulating hypoxia at FiO 2 ≈ 13% (HG) or were not subjected to additional stress (CG). Peak aerobic power during an incremental test, exercise duration, maximal accumulated oxygen deficit and accumulated oxygen uptake ( VO 2 ) during a supramaximal constant-intensity test were improved thanks to RST ( p < 0.05). No significant differences were observed between the groups ( p > 0.05). No further effect was found on other variables including time-trial performance and parameters of the force-velocity relationship ( p > 0.05). Thus, peak aerobic power, exercise duration, maximal accumulated oxygen deficit, and VO 2 were improved during a supramaximal constant-intensity exercise after six RST sessions. However, combined hypoxic stress or partial BFR did not further increase peak aerobic power.
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Dates and versions

hal-03774020 , version 1 (30-11-2022)

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Margaux Giovanna, Robert Solsona, Anthony Sanchez, Fabio Borrani. Effects of short-term repeated sprint training in hypoxia or with blood flow restriction on response to exercise. Journal of Physiological Anthropology, 2022, 41 (1), pp.32. ⟨10.1186/s40101-022-00304-1⟩. ⟨hal-03774020⟩

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