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Physiology Friday #239: Can Exercise Prevent the Blood-Pressure-Elevating Effects of Sleep Deprivation?

Physiologically Speaking

Welcome to the Physiology Friday newsletter. Physiologically Speaking is a reader-supported publication. When we don’t get enough sleep, our physiology suffers—insulin sensitivity tanks, cognitive function wanes, and physical performance is drastically impaired. I know I have (new dad here). and woke up at 7 a.m. (8

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Physiology Friday #215: Sitting Less Improves Blood Pressure

Physiologically Speaking

Welcome to the Physiology Friday newsletter. Physiologically Speaking is a reader-supported publication. When we are standing up or walking around (ambulating), our muscles contract to maintain posture and blood flow increases to meet the metabolic demands of the muscles.

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Study shows aerobic exercise performed in the evening benefits elderly hypertensives more than morning exercise

Medical Xpress - Cardiology

Aerobic training is known to regulate blood pressure more effectively when practiced in the evening than in the morning. The study is published in The Journal of Physiology.

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Why Nighttime Light Exposure is So Harmful for Cardiovascular Health

Physiologically Speaking

Our body’s physiological processes oscillate on a 24-hour cycle known as the circadian rhythm. Circadian rhythms in blood pressure and heart rate, among other functions, are crucial for cardiovascular health and preventing cardiovascular disease. In general, light exposure increases nighttime blood pressure and heart rate.

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What happens to blood pressure when we stand up ?

Dr. S. Venkatesan MD

Many times , an Innocuous question poses a real challenge, to our life time understanding of circulatory physiology. In patients with associated supine hypertension, the criteria for orthostatic hypotension allows for a drop of at least 30 mm Hg in SBP or 15 mm Hg in DBP. Can you discuss the answer to the question please ? Reference 1.Wahba

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Investigators identify novel plasma proteins linked to future risk of hypertension

Medical Xpress - Cardiology

Exercise testing can serve as a powerful physiologic probe to unmask subclinical cardiovascular abnormalities well before disease onset. For example, blood pressure changes during exercise (EBP) can reveal a latent tendency toward future development of hypertension.

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The Ultimate Cardiovascular Health Guide

Physiologically Speaking

As we age, we have lower levels of nitric oxide (NO), leading to endothelial dysfunction , arterial stiffening, and a rise in blood pressure (hypertension) — three of the primary causes of cardiovascular disease. Some studies have shown the potential of NR in particular to reduce blood pressure and arterial stiffness.