scholarly journals A Single Dose of Beetroot Juice Does Not Change Blood Pressure Response Mediated by Acute Aerobic Exercise in Hypertensive Postmenopausal Women

Nutrients ◽  
2019 ◽  
Vol 11 (6) ◽  
pp. 1327 ◽  
Author(s):  
Ana Luiza Amaral ◽  
Igor M. Mariano ◽  
Victor Hugo V. Carrijo ◽  
Tállita Cristina F. de Souza ◽  
Jaqueline P. Batista ◽  
...  
Keyword(s):  
Blood Pressure ◽  
Exercise Training ◽  
Aerobic Exercise ◽  
Postmenopausal Women ◽  
Blood Pressure Response ◽  
Aerobic Exercise Training ◽  
Exercise Session ◽  
Beetroot Juice ◽  
Post Exercise ◽  
Before And After

Objective: To verify if acute intake of beetroot juice potentiates post-exercise hypotension (PEH) in hypertensive postmenopausal women. Methods: Thirteen hypertensive postmenopausal women (58.1 ± 4.62 years and 27.4 ± 4.25 kg/m²) were recruited to participate in three experimental sessions, taking three different beverages: Beetroot juice (BJ), placebo nitrate-depleted BJ (PLA), and orange flavored non-caloric drink (OFD). The participants performed moderate aerobic exercise training on a treadmill, at 65–70% of heart rate reserve (HRR), for 40 min. After an overnight fast, the protocol started at 07h when the first resting blood pressure (BP) was measured. The beverage was ingested at 07h30 and BP was monitored until the exercise training started, at 09h30. After the end of the exercise session, BP was measured every 15 min over a 90-min period. Saliva samples were collected at rest, immediately before and after exercise, and 90 min after exercise for nitrite (NO2−) analysis. Results: There was an increase in salivary NO2− with BJ intake when compared to OFD and PLA. A slight increase in salivary NO2− was observed with PLA when compared to OFD (p < 0.05), however, PLA resulted in lower salivary NO2− when compared to BJ (p < 0.001). There were no changes in salivary NO2− with the OFD. Systolic and diastolic BP decreased (p < 0.001) on all post exercise time points after all interventions, with no difference between the three beverages. Conclusion: Acute BJ intake does not change PEH responses in hypertensive postmenopausal women, even though there is an increase in salivary NO2−.

scholarly journals Effect of aerobic exercise training on cGMP levels and blood pressure in treated hypertensive postmenopausal women

2017 ◽  
Vol 23 (1) ◽  
pp. 1-6 ◽  
Author(s):  
Iane P Novais ◽  
◽  
Aline P Jarrete ◽  
Guilherme M Puga ◽  
Hygor N Araujo ◽  
...  
Keyword(s):  
Blood Pressure ◽  
Exercise Training ◽  
Aerobic Exercise ◽  
Postmenopausal Women ◽  
Aerobic Exercise Training

Sympathetic activity and the heterogenous blood pressure response to exercise training in hypertensives

2002 ◽  
Vol 92 (4) ◽  
pp. 1434-1442 ◽  
Author(s):  
Michael D. Brown ◽  
Donald R. Dengel ◽  
Robert V. Hogikyan ◽  
Mark A. Supiano
Keyword(s):  
Blood Pressure ◽  
Insulin Sensitivity ◽  
Exercise Training ◽  
Aerobic Exercise ◽  
Blood Pressure Response ◽  
Pressure Response ◽  
Aerobic Exercise Training ◽  
Sensitivity Index ◽  
Arterial Blood ◽  
Wide Range

To test whether changes in sympathetic nervous system (SNS) activity or insulin sensitivity contribute to the heterogeneous blood pressure response to aerobic exercise training, we used compartmental analysis of [3H]norepinephrine kinetics to determine the extravascular norepinephrine release rate (NE2) as an index of systemic SNS activity and determined the insulin sensitivity index (SI) by an intravenous glucose tolerance test, before and after 6 mo of aerobic exercise training, in 30 (63 ± 7 yr) hypertensive subjects. Maximal O2consumption increased from 18.4 ± 0.7 to 20.8 ± 0.7 ml · kg−1· min−1( P = 0.02). The average mean arterial blood pressure (MABP) did not change (114 ± 2 vs. 114 ± 2 mmHg); however, there was a wide range of responses (−19 to +17 mmHg). The average NE2did not change significantly (2.11 ± 0.15 vs. 1.99 ± 0.13 μg · min−1· m−2), but there was a significant positive linear relationship between the change in NE2and the change in MABP ( r = 0.38, P = 0.04). SIincreased from 2.81 ± 0.37 to 3.71 ± 0.42 μU × 10−4· min−1· ml−1( P = 0.004). The relationship between the change in SIand the change in MABP was not statistically significant ( r = −0.03, P = 0.89). When the changes in maximal O2consumption, percent body fat, NE2, and SIwere considered as predictors of the change in MABP, only NE2was a significant independent predictor. Thus suppression of SNS activity may play a role in the reduction in MABP and account for a portion of the heterogeneity of the MABP response to aerobic exercise training in older hypertensive subjects.

scholarly journals Responses of Endothelin-1 and Arterial Blood Pressure of Postmenopausal Women to Aerobic Exercise Training

Salmand ◽  
2016 ◽  
Vol 11 (2) ◽  
pp. 370-381
Author(s):  
Ahmad Ghasemian ◽  
Farhad Daryanoush ◽  
Ebrahim Ghasemian ◽  
Elham Shakoor
Keyword(s):  
Blood Pressure ◽  
Exercise Training ◽  
Aerobic Exercise ◽  
Postmenopausal Women ◽  
Arterial Blood Pressure ◽  
Aerobic Exercise Training ◽  
Endothelin 1 ◽  
Arterial Blood

scholarly journals Acute Exercise Increases Adiponectin Levels in Abdominally Obese Men

2012 ◽  
Vol 2012 ◽  
pp. 1-6 ◽  
Author(s):  
Travis J. Saunders ◽  
Andrew Palombella ◽  
K. Ashlee McGuire ◽  
Peter M. Janiszewski ◽  
Jean-Pierre Després ◽  
...  
Keyword(s):  
Aerobic Exercise ◽  
Acute Exercise ◽  
Treadmill Exercise ◽  
Aerobic Exercise Training ◽  
Exercise Session ◽  
Short Term ◽  
Acute Bout ◽  
Plasma Adiponectin ◽  
Peak Intensity ◽  
Before And After

Objective. To examine the effect of acute and short-term (~1 week) aerobic exercise training on plasma adiponectin levels in inactive, abdominally obese men.Materials and Methods. Inactive and abdominally obese men (n=38, waist circumference ≥102 cm) recruited from Kingston, Canada were randomly allocated to perform three bouts of aerobic treadmill exercise at either low (50% VO2peak) or high (75% VO2peak) intensity during a 1-week period. Blood samples were taken before and after the first exercise session and 24–72 hours following the completion of the final exercise session.Results. Adiponectin levels were elevated immediately following an acute bout of exercise at both high and low intensities (High:5.79±0.42versus5.05±0.41 ug/mL; Low:5.24±0.44versus4.37±0.44 ug/mL,P<0.05) and remained elevated following 30 minutes of rest. In comparison to baseline, adiponectin levels were also elevated 24–72 hours following the final exercise session (High:5.47±0.48versus4.88±0.48 ug/mL; Low:5.18±0.49versus4.47±0.49 ug/mL,P<0.05).Conclusion. Both acute and short-term aerobic exercise result in a significant increase in plasma adiponectin levels in inactive, abdominally obese men independent of intensity.

Abstract P095: Aerobic Exercise Training Reduces Endothelin-1-mediated Vasoconstriction In Postmenopausal Women

Hypertension ◽  
2020 ◽  
Vol 76 (Suppl_1) ◽  
Author(s):  
Megan M Wenner ◽  
Caitlin Dow ◽  
Jared Greiner ◽  
Brian Stauffer ◽  
Christopher Desouza
Keyword(s):  
Exercise Training ◽  
Aerobic Exercise ◽  
Postmenopausal Women ◽  
Exercise Intervention ◽  
Aerobic Exercise Training ◽  
Receptor Blockade ◽  
Maximal Heart Rate ◽  
Endothelin 1 ◽  
Vasodilator Response ◽  
Exercise Induced

Endothelin-1 (ET-1)-mediated vasoconstrictor tone is elevated in postmenopausal women (PMW), contributing to their increased cardiovascular risk. Although aerobic exercise is beneficial in reducing ET-1 system activity in men, it is unknown whether this favorable vascular effect is conferred in women. In fact, contrary to men, it is uncertain whether aerobic exercise training improves endothelial dysfunction in PMW. We tested the hypothesis that aerobic exercise training reduces ET-1-mediated vasoconstriction in PMW. We further hypothesized reductions in ET-1 vasoconstrictor tone underly exercise-induced improvements in endothelium-dependent vasodilatation in PMW. Methods: Forearm blood flow (FBF) responses to intra-arterial infusion of selective ET A receptor blockade (BQ-123, 100 nmol/min for 60 min), acetylcholine (4.0, 8.0 and 16.0 μg/100 mL tissue/min) in the absence and presence of ET A receptor blockade and sodium nitroprusside (1.0, 2.0 and 4.0 μg/100 mL tissue/min) were determined before and after a 12-week aerobic exercise training intervention in 20 healthy, sedentary PMW (56 + 1 yr). Results: All 20 PMW completed the exercise intervention, walking an average of 4.9 + 0.1 d/wk for 50 + 2 min/d at 71 + 1% of maximal heart rate. After the exercise intervention, BQ-123 elicited no significant change in resting FBF in the previously sedentary PMW compared with significant vasodilation (~25%) before exercise. FBF responses to acetylcholine were markedly higher (~25%; P<0.05) after (from 4.3 + 0.3 to 13.8 + 0.8 mL/100 ml tissue/min) vs before (from 4.1 + 0.2 to 11.3 + 0.8 mL/100 ml tissue/min) exercise training. Moreover, before exercise training the co-infusion of BQ-123 with acetylcholine enhanced (~25%; P<0.05) the vasodilator response (from 4.3 + 0.3 to 13.7 + 0.7 mL/100 mL tissue/min) compared with acetylcholine alone; after exercise training, the presence of BQ-123 did not significantly affect the vasodilator response to acetylcholine. Conclusions: These data demonstrate that aerobic exercise training reduces ET-1-mediated vasoconstriction in PMW. Furthermore, decreased ET-1-mediated vasoconstriction is an important mechanism underlying aerobic exercise-induced improvement in endothelium-dependent vasodilation in PMW.

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