Life Lines by Dr. Dolittle

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Tag Archive for ‘Exercise’

Taller horses are more prone to exercise intolerance

A common cause of exercise intolerance in horses is equine recurrent laryngeal neuropathy (RLN). This is a fancy way of saying that the animals are not able to open their larynx on the left side very well during strenuous exercise, which limits their oxygen intake and ability to exercise. Larger horses, like thoroughbreds, are more prone to developing this condition than smaller breeds. In a new study published in Physiological Genomics […]

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Physiology in Nebraska

Continuing on our journey across the country…the University of Nebraska at Omaha hosted the Nebraska Physiological Society’s annual meeting on Saturday. This year’s keynote speaker was Dr. Timothy Musch, University Distinguished Professor in the Departments of Kinesiology & Anatomy and Physiology at Kansas State University. Dr. Musch spoke about factors that regulate blood flow to skeletal muscle and how oxygen delivery to muscle changes with chronic heart failure. Dr. Xuejun […]

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Summer of Physiology

The Michigan Physiological Society, a chapter of the American Physiological Society, held their annual meeting this summer.  Here are some highlights from the meeting: The keynote address was given by Dr. Virginia Miller, Professor of Surgery and Physiology and Director of the Women’s Health Research Center, Mayo Clinic, Rochester, MN. Her talk was about “Sex-specific Differences in Risk for Cardiovascular Disease.” Specifically, how estrogen, menopause and pregnancy influence the risk […]

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Chocolate: Bad for Fido, good for us?

Many animals, especially dogs and cats, cannot tolerate theobromine which is an alkaloid from the cacao plant. Studies of humans, however, have found many beneficial health effects of theobromine, caffeine as well as flavonoids found in cocoa (Martinez-Pinilla et al., 2015). A new study published in Journal of Applied Physiology examined whether cocoa extract can improve heart health in individuals exercising in hypoxic conditions. Hypoxia (i.e. low atmospheric oxygen) reduces the […]

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Comparative Physiology @ Experimental Biology

I am printing my posters and planning my schedule for the 2018 Experimental Biology conference, which starts this weekend. This is no doubt the highlight of my year! I am looking forward to the comparative physiology sessions. Judging from the program, I think this is going to be a really exciting conference! This year’s August Krogh Distinguished Lectureship will be given by Dr. Stanley Hillman from Portland State University who […]

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Very high intensity exercise: hovering

I just read an interesting review published in Physiology of flight energetics and fuel use in nectar feeding hummingbirds and bats. While flight is considered pretty high intensity exercise, hovering flight is even more demanding. Hummingbirds and nectar feeding bats are really tiny and thus have very high metabolisms to maintain body heat. Some of these animals are also migratory, which is an even greater energy demand. Remarkably, they sustain […]

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Drosophila help researchers understand rare genetic disorder

Barth Syndrome is a rare genetic disorder that affects mainly males. It is characterized by impaired lipid metabolism, muscle weakness, growth delays, cardiomyopathy, and low numbers of neutrophils in the blood, which renders patients with the condition more susceptible to infections. There is no known cure for Barth Syndrome. In the past, patients with Barth syndrome often died by the age of three from infections or heart failure (Barth Syndrome […]

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