A new research has suggested that not doing exercise every day, could deactivate a vital protein in the body.
Which causing further inactivity and making exercise even more difficult.
University of Leeds scientists discovered that deactivating the Piezo1 protein, a blood flow sensor, reduces the density of capillaries carrying blood to the muscles.
This restricted blood flow meant that activity becomes more difficult and can lead to a reduction in how much exercise is possible.
They said that the results helped in explaining the biology of why exercise becomes harder the less one does it.
The experiments were carried out in mice, but the Piezo1 protein is found in humans, suggesting the same results could occur.
Exercise protects against cardiovascular disease, diabetes, depression and cancer.
Unfortunately, many people fail to exercise enough, for reasons such as injury and computer usage.
This puts people at more risk of disease.
The less people exercise, the less fit they become, often leading to a downward spiral.
Although many responses to exercise are known, how the benefits of exercise are initially triggered at a molecular level is mysterious.
This study highlights the crucial link between physical activity and physical performance made at this level by Piezo1.
Keeping Piezo 1s active by exercising may be crucial in our physical performance and health.
During the experiment, scientists compared two groups of mice – a control group, and a group whose Piezo1 levels had been disrupted for 10 weeks.
Walking, climbing and running wheel activity was observed, with the Piezo1 mice showing a striking reduction in activity levels.
This suggested an important role for Piezo1 in sustaining normal physical activity.
The researchers considered whether the Piezo1 mice were less interested in exercise, but they found no differences in the amount or duration of activity between the two groups.
Instead, there were fewer running wheel revolutions per exercise session, and slower running speed, suggesting a lowered ability to exercise, without a lesser desire.
This work sheds new light on how Piezo 1’s role in blood vessels is connected to physical activity.
A lot was already known about its role in blood vessel development, but far less was known about its contribution to vessel maintenance in adults.
This discovery also provides an opportunity to think about how loss of muscle function could be treated in new ways: if we activate Piezo1, it might help to maintain exercise capability.
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