Bright light increases blood pressure and rate-pressure product after a single session of aerobic exercise in men

Autor(es)

Oliveira, Gustavo F. ; Marin, Thais C. ; Barbosa, Julio C. C. L. ; Azevedo, Luan M. ; Thosar, Saurabh S. ; Cipolla-Neto, Jose ; Forjaz, Claudia L. M. ; Brito, Leandro C.

• Tipo de documento: Artigo Científico
• Fonte: PHYSIOLOGICAL REPORTS; v. 12, n. 14, p. 9-pg., 2024-07-01.

Resumo

This study aimed to test whether bright light (BL) exposure attenuates the reduction in blood pressure (BP) postexercise compared to dim light (DL). Twenty healthy men (27 +/- 5 years) randomly underwent two experimental sessions: one under BL (5000 lux) and another under dim light (DL <8lux). In each session, subjects executed a bout of aerobic exercise (cycle ergometer, 30 min, moderate intensity). BP (oscillometric) and heart rate (HR monitor) were measured, and rate-pressure-product (RPP) was calculated. Additionally, a 24-h ambulatory blood pressure monitoring (ABPM) was conducted after the sessions. Systolic BP decreased while HR increased significantly and similarly after the exercise in both sessions. Additionally, systolic BP levels were higher in BL than DL throughout the experimental session (P-session = 0.04). Diastolic (P-interaction = 0.02) and mean (P-interaction = 0.03) BPs decreased after exercise in DL (at 30 min), and increased in BL (at 60 and 90 min). RPP increased in both sessions postexercise, but with a main effect revealing higher levels throughout the experimental session in BL than DL (P-session = 0.04) and during the first 3 h of ABPM (p = 0.05). In healthy men, BL exposure increased systolic BP and cardiac work, and abolished the postexercise decreases of diastolic and mean BPs. (AU)

• Processo FAPESP: 19/24327-5 - Melatonina, fisiologia e fisiopatologia, estudos básicos e clínicos: caracterização da Síndrome Hipomelatoninêmica e o papel da reposição terapêutica com melatonina
• Beneficiário: José Cipolla Neto
• Modalidade de apoio: Auxílio à Pesquisa - Temático
• Processo FAPESP: 22/12605-3 - Efeito da fase do dia em que o treinamento aeróbico é realizado na função vascular de idosos hipertensos medicados
• Beneficiário: Cláudia Lúcia de Moraes Forjaz
• Modalidade de apoio: Auxílio à Pesquisa - Regular
• Processo FAPESP: 18/05226-0 - Influência da fase do dia em que o treinamento aeróbico é realizado sobre as adaptações autonômicas e vasculares promovidas por esse treinamento em hipertensos idosos
• Beneficiário: Leandro Campos de Brito
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado