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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. One potent strategy is exercise.
Aerobic training is known to regulate bloodpressure more effectively when practiced in the evening than in the morning. The study is published in The Journal of Physiology.
Welcome to the Physiology Friday newsletter. Physiologically Speaking is a reader-supported publication. Even those of us who exercise for 1–2 hours per day still spend a large part of our day engaging in sedentary behavior (which, by the way, exercise doesn’t make us immune to).
Welcome to the Physiology Friday newsletter. Physiologically Speaking is a reader-supported publication. Clinically, about 1/3 of adults have metabolic syndrome — a cluster of conditions including abdominal obesity, high bloodpressure, high blood glucose, high triglycerides, and low HDL cholesterol.
Welcome to the Physiology Friday newsletter. Physiologically Speaking is a reader-supported publication. Clinically, about 1/3 of adults have metabolic syndrome — a cluster of conditions including abdominal obesity, high bloodpressure, high blood glucose, high triglycerides, and low HDL cholesterol.
Welcome to the Physiology Friday newsletter. Physiologically Speaking is a reader-supported publication. These mice gained weight and had worse glucose control compared to mice on a normal schedule, but exercising prevented some of these changes. This commonly involves staying up later at night and sleeping in later than usual.
Welcome to the Physiology Friday newsletter. Physiologically Speaking is a reader-supported publication. Prolonged bouts of sitting negatively contribute to health by causing endothelial dysfunction, bloodpressure elevations, and glucose dysregulation.
Many times , an Innocuous question poses a real challenge, to our life time understanding of circulatory physiology. Next question What happens to BP during exercise ? 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. Reference 1.Wahba
Exercise testing can serve as a powerful physiologic probe to unmask subclinical cardiovascular abnormalities well before disease onset. For example, bloodpressure changes during exercise (EBP) can reveal a latent tendency toward future development of hypertension.
The Role of Wearable Technology in Heart Health Wearable tech is designed to monitor physiological data and provide actionable insights to users. For heart health, these devices use advanced sensors to track metrics like heart rate, blood oxygen levels, and even irregular heart rhythms.
Welcome to the Physiology Friday newsletter. Physiologically Speaking is a reader-supported publication. Resting metabolic rate, overnight heart rate, and overnight systolic and diastolic bloodpressure were unaltered by carbohydrate or sugar restriction. No surprises here. That’s a sweet conclusion.
Serotonin (5-hydroxytryptamine, 5-HT) at low plasma concentrations reduces bloodpressure and dilates some skeletal muscle arterioles in the rat. We hypothesized that the 5-HT7 receptor is essential for both 5-HT-induced changes in bloodpressure and skeletal muscle arteriolar function. 7.1%; F WT= 101.0+12.0
However, prolonged exposure to stress can lead to persistently high levels of these hormones, contributing to increased heart rate, elevated bloodpressure, and inflammation, all of which raise the risk of heart disease. People with anxiety often experience elevated heart rates and increased bloodpressure.
It is a physiological adaptation helping athletes perform physical tasks better than non-athletes. During aerobic exercise which is isotonic, the heart rate and stroke volume increases. Systemic vascular resistance falls, but slight to moderate increase in bloodpressure can occur due to the increased cardiac output.
He first noticed it while exercising. Over the next three days, he continued to have intermittent symptoms and therefore re-presented to the emergency room. He described the symptom as chest burning with occasional radiation into his throat and jaw. The day of presentation, the pain woke him from sleep, which is why he decided to come in.
The convenience of processed foods, high intake of saturated fats, and inadequate exercise collectively contribute to an increased risk of heart-related problems. Nicotine and other harmful substances present in tobacco can lead to constriction of blood vessels, an increase in heart rate, and elevated bloodpressure.
Welcome to the Physiology Friday newsletter. Physiologically Speaking is a reader-supported publication. We all know those people, perhaps we are those people, who talk nonstop about the benefits of exercise. While generally well-intentioned, exercists can sometimes give exercise a bad reputation, making it out to be a panacea.
Welcome to the Physiology Friday newsletter. ICYMI On Wednesday, I published a post about the recent evidence on high-volume exercise and atherosclerosis in athletes. Physiologically Speaking is a reader-supported publication. . We need a way to weave exercise into daily life. Life gets busy.
Welcome to the Physiology Friday newsletter. Physiologically Speaking is a reader-supported publication. There’s a surge in research devoted to finding the best time to exercise. These results suggests that more attention should be paid to the idea of “chrono-exercise” for health and disease management.
Welcome to the Physiology Friday newsletter. Physiologically Speaking is a reader-supported publication. Even though acute exercise protects against the effects of prolonged sitting, less is known about how habitual physical activity or cardiovascular fitness may influence these responses.
Welcome to the Physiology Friday newsletter. Physiologically Speaking is a reader-supported publication. On Monday, I posted a video summary of the recently released Scientific Statement by the American Heart Association (AHA) on resistance exercise training for cardiovascular health.
Welcome to the Physiology Friday newsletter. Physiologically Speaking is a reader-supported publication. On Monday, I posted a video summary of the recently released Scientific Statement by the American Heart Association (AHA) on resistance exercise training for cardiovascular health.
Welcome to the Physiology Friday newsletter. Physiologically Speaking is a reader-supported publication. Exercise changes the heart. link] The underlying drivers of these adaptations are also exercise-mode specific: What causes these changes? 1 Cardiac adaptations to strength and endurance exercise.
Plenty of people love to exercise. But the disheartening truth is that most people don’t enjoy exercise. A third or less of adults meet the minimum recommendations for aerobic and strength exercise each week. I’m an exercise scientist by training. We can promote exercise until we’re red in the face.
As we age, we have lower levels of nitric oxide (NO), leading to endothelial dysfunction , arterial stiffening, and a rise in bloodpressure (hypertension) — three of the primary causes of cardiovascular disease. Some studies have shown the potential of NR in particular to reduce bloodpressure and arterial stiffness.
Welcome to the Physiology Friday newsletter. Physiologically Speaking is a reader-supported publication. The physiology of shivering Cold exposure with shivering activates several physiological responses that can contribute to better metabolic health. You can find more products I’m affiliated with on my website.
Poor sleep generally impacts cognitive well-being, nutrition and exercise routines, all of which are key pillars of cardiovascular health. You desperately want to breathe, so you choke and gag in response, and your heart rate and bloodpressure go through the roof. Now imagine someone doing that to you every night.
Welcome to the Physiology Friday newsletter. Physiologically Speaking is a reader-supported publication. Lewis, The Abolition of Man Exercise is an anti-depressant. In fact, some studies show that exercise is better than antidepressants. There is no doubt about it — people who exercise have healthier hearts.
Welcome to the Physiology Friday newsletter. ICYMI On Wednesday, I published a post discussing the different metabolic effects of the ketogenic diet and exogenous ketones during exercise. Physiologically Speaking is a reader-supported publication. We’re well-informed about how exercise is good for us.
Results revealed that women are twice as likely to exhibit myocardial ischemia in response to mental stress compared to traditional stressors like exercise or pharmacologic stress. After a normal stress test, coronary physiology testing revealed endothelial dysfunction with coronary vasospasm.
The amount of calcium in the blood vessels (known as arterial calcification), a marker of subclinical atherosclerosis, is higher in people with a short sleep duration. Multiple studies find that the risk for high bloodpressure (hypertension) is elevated in women with short sleep duration to a greater extent than it is in men.
Not everyone who meets the criteria for metabolic syndrome will become diabetic, but falling into this category means you share much of the same underlying physiology. The role of exercise in preventing diabetes is critical and arguably one of the biggest levers that can be pulled. But exercise is not the only factor at play.
Welcome to the Physiology Friday newsletter. Physiologically Speaking is a reader-supported publication. The metabolic and performance effects of prolonged fasting haven’t really been well characterized in humans, at least using standard exercise tests. You can find more products I’m affiliated with on my website.
Welcome to the Physiology Friday newsletter. Physiologically Speaking is a reader-supported publication. Sedentary behavior is known to elevate the risk of cardiovascular disease by contributing to metabolic dysfunction, impaired glucose and lipid metabolism, elevated bloodpressure, and reduced endothelial function.
This has raised concerns that long-term, high-volume exercise might be detrimental to heart health. Notably, athletes engaging in very vigorous-intensity exercise are more likely to develop calcified plaques. Physiologically Speaking is a reader-supported publication.
Innocent Heart Murmurs: These are also called functional or physiologic murmurs. Below are some of the most common causes of heart murmurs: Increased Blood Flow: Innocent heart murmurs often occur when there is an increase in blood flow, such as during pregnancy, exercise, fever, or growth spurts in children.
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