Artículos de revistas
Exercise intensity modulates nitric oxide and blood pressure responses in hypertensive older women
Registro en:
Aging Clinical And Experimental Research. Springer, v. 25, n. 1, n. 43, n. 48, 2013.
1594-0667
1720-8319
WOS:000327390100007
10.1007/s40520-013-0017-x
Autor
Santana, HAP
Moreira, SR
Asano, RY
Sales, MM
Cordova, C
Campbell, CSG
Espindola, FS
Sposito, AC
Nobrega, OT
Simoes, HG
Institución
Resumen
Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) Background and aims physical activity can better promote the release of nitric oxide (NO) and reduction of blood pressure in hypertensive older-adults is still unknown. In this study, the post-exercise blood pressure (BP) response and NO release after different intensities of aerobic exercise in elderly women were analyzed. Methods Blood pressure response and NO were analyzed in 23 elderly mildly hypertensive women. Participants underwent (1) high-intensity incremental exercise (IT); (2) moderate-intensity 20 min exercise at 90 % of the anaerobic threshold (AT), and (3) control (CONT) session. BP was measured before and after interventions; volunteers remained seated for 1 h. NO estimates were made through NO2- analyses. Results After CONT session, both diastolic BP and mean arterial pressure (MAP) were significantly higher than during pre-exercise resting. Post-exercise hypotension (PEH) was observed after exercise at IT and 90 % of AT. Although exercise in both sessions lowered SBP and MAP compared with CONT, exercise at the highest intensity (IT) was more effective on lowering systolic BP after exercise. In comparison with pre-exercise resting, NO2- increased significantly only after IT, but both exercise sessions caused NO2- to increase compared with CONT. Conclusion Exercise intensity and NO release may exert a role in eliciting PEH in mildly hypertensive elderly women. 25 1 43 48 Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) CNPq [484318/2006-3, 478946/2008-2]