Cardiac autonomic response to aerobic exercise with different levels of blood flow restriction in pre-hypertensive men
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ORIGINAL ARTICLE
Cardiac autonomic response to aerobic exercise with different levels of blood flow restriction in pre‑hypertensive men Julio Cezar Schamne1 · Cleverson Motin1 · Rafael Carlos Sochodolak1 · Adriano Eduardo Lima‑Silva2 · Nilo Massaru Okuno1 Received: 17 July 2020 / Accepted: 18 September 2020 © Springer-Verlag Italia S.r.l., part of Springer Nature 2020
Abstract Purpose Cardiovascular safety of aerobic exercise with blood flow restriction (BFR) has been little studied in clinical populations. This study investigated the effects of different levels of BFR on cardiac autonomic response during and after walking tasks in pre-hypertensive men. Methods Twelve pre-hypertensive men performed three randomly assigned experimental sessions: (1) 20 min of walking at 40% of peak running velocity ( Vpeak) without BFR (CON); (2) 20 min of walking at 40% of V peak with BFR sets at 40% of the maximum cuff pressure that fully interrupted blood flow (BFR40); and (3) 20 min of walking at 40% of V peak with BFR sets at 80% of the maximum cuff pressure that fully interrupted blood flow (BFR80). The HR and HRV measurements were taken at rest, during exercise, and during the recovery period after constant load sessions. Results Heart rate was higher throughout the BFR80 session when compared to the CON condition (p
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