Post-exercise hypotension after maximal intensity exercise and the effect of beetroot on blood pressure response: a randomized clinical trial.
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Abstract: Purpose: We investigate the effects of a running exercise session until exhaustion on the post-exercise pressure response and to see if beetroot changes this response. Materials and Methods: Normotensive recreational male street runners (39.2 ± 8.6 years, n= 17) performed two running to exhaustion at 80% of VO2 max: 1-preceded by intake of 140mL of beetroot juice (BET); or 2-control drink (CON). Measurements of blood pressure (BP) were performed at rest, immediately after exercise and every 10 min during 60 min recovery after exercise. Nitrite, malondialdehyde and total antioxidant capacity were measured before, 2 hours after ingestion of drinks and after exercise. Results: The BP decreased in both procedures at 60 minutes post-exercise in relation to the pre-exercise moment: systolic BP (BET: 108.9 ± 8.0 to 95.4 ± 5.1, p <0.05; CON: 109.4 ± 8.5 to 93.4 ± 5.3, p <0.05); diastolic BP (BET: 76.8 ± 6.2 to 66.4 ± 1.5 p <0.05; CON: 75 ± 65.4 to 65.5 ± 1.0, p <0.05), with no difference between procedures. Conclusion: Exercise until exhaustion promotes a significant reduction in BP, but intake of a single dose of beetroot juice before exercise does not promote additional effects on the post-exercise hypotensive response in recreational runners. Trial registration number and date of registration: RBR-9ydn4bn, June 09, 2022.
Palabras clave
Post-exercise hhypotension, Beetroot juice, Exercise until exhaustion, Beterraba, Pressão Arterial, Beets, Juices, Blood pressure, Exercise test