Is there an ideal time to exercise? | Life



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While studies have shown that oxygen levels in cells were lower in mice in the morning, the results may not be transposed to humans. - Shutterstock.com pic
While studies have shown that oxygen levels in cells were lower in mice in the morning, the results may not be transposed to humans. – Shutterstock.com pic

REHOVOT (Israel), April 20 – Two studies published in Cellular Metabolism confirm the impact of our sleep cycle on athletic performance.

"It is well known that almost every aspect of our physiology and metabolism is dictated by the circadian clock. This is true not only in humans, but in all organisms sensitive to light. We decided to ask if there is a connection between the time of day and the performance in the exercise, "says Gad Asher of the Department of Biomolecular Sciences of Rehovot, Israeli Institute of Science Weizmann, co-author of one of the studies.

Directed by Paolo Sassone-Corsi, UC Irvine's Center for Epigenetics and Metabolism, the first study used mice on mats to observe the mechanisms of processes such as glycolysis (the metabolization of sugars into energy) and lipid oxidation (fat burning ).

The American team of scientists also discovered that the hif-1 protein, which stimulates certain genes based on tissue oxygen levels, is activated by physical activity in different ways according to the time of day: "so far no Do you know that your levels fluctuate based on the time of day, "says Sassone-Corsi.

Are you working out in the morning better than at night?

The second study, conducted by Professor Asher, also used mice on mats at different times of the day. The scientists then asked 12 people to perform a similar exercise. The experiment revealed that oxygen levels in the cells were lower in mice and in human participants who worked in the morning compared to those who did it at night, which translated into higher efficiency and less perceived exertion.

Researchers behind the two studies doubt that the results can be directly transposed to humans, since we have more variations on our chronotypes compared to mice living in a laboratory: "You can be a morning person or a night person. these things need to be taken into account, "says Sassone-Corsi.

The best time of day to exercise seems to be, first and foremost, contingent on our internal clock and therefore can vary greatly from one individual to another. – AFP-Relaxnews

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