| Autor: |
Victor Hugo V. Carrijo, Ana Luiza Amaral, Igor M. Mariano, Tállita Cristina F. de Souza, Jaqueline P. Batista, Erick P. de Oliveira, Guilherme M. Puga |
| Jazyk: |
angličtina |
| Rok vydání: |
2021 |
| Předmět: |
|
| Zdroj: |
Journal of Exercise Science & Fitness, Vol 19, Iss 2, Pp 104-110 (2021) |
| Druh dokumentu: |
article |
| ISSN: |
1728-869X |
| DOI: |
10.1016/j.jesf.2020.12.001 |
| Popis: |
Background/Objective: To compare the acute effects of a single dose of beetroot juice (BJ) with different concentrations of nitrate (NO3−) on heart rate variability (HRV) in postmenopausal hypertensive women. Methods: Thirteen hypertensive postmenopausal women (58.1 ± 4.6 years of age and 27 ± 4 kg/m2 of BMI) completed the protocol that consisted of three visits with different beverage intakes in a randomized and crossover design. The three beverages were BJ with a high content of nitrate (high-NO3-), BJ with a low content of nitrate (low-NO3-), and an orange flavored non-caloric drink (OFD). Heart rate (HR) were evaluated during 20 min after sitting rest at 7:20 a.m. (baseline), after they drank one of the drinks, and remained at sitting rest for 120 min and then performed 40 min of aerobic exercise at 65–70% of the HR reserve on a treadmill. HR was recorded for 90 min after exercise for time, frequency, and non-linear domains of HRV index analysis. Results: Two-way ANOVA showed that there were no interaction effects (time∗sessions) in any of the HRV indexes after exercise in all three sessions. HRV indexes increased after exercise (p = |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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