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Women found to be more naturally fit than men

The speed of oxygen uptake by the body's cells is often used as an indicator of aerobic fitness, and new research shows women are able to process oxygen quicker than men. when they start to exercise.

"The findings are contrary to the popular assumption that men's bodies are more naturally athletic," said Thomas Beltrame, lead author on the study.

Quick oxygen uptake places less strain on the body's cells and is considered an important measure of aerobic fitness.

The study compared oxygen uptake and muscle oxygen extraction between 18 young men and women of similar age and weight during treadmill exercise. Women consistently outperformed men with around 30% faster oxygen handling throughout the body.

"We found that women's muscles extract oxygen from the blood faster, which, scientifically speaking, indicates a superior aerobic system," said Richard Hughson, a professor in the Faculty of Applied Health Sciences, and Schlegel Research Chair in Vascular Ageing and Brain Health at Waterloo.

By processing oxygen faster, women are less likely to accumulate molecules linked with muscle fatigue, effort perception and poor athletic performance.

"While we don't know why women have faster oxygen uptake, this study shakes up conventional wisdom," said Beltrame. "It could change the way we approach assessment and athletic training down the road."

Materials provided by University of Waterloo

Research shows women outlast men during dynamic muscle exercises

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