How much you sweat is determined by your body size


A new study has refuted previous notion that sweating is a gender-dependent thing while putting forward evidence that sweating depends on size of the body of the person and their weight.

Researchers have published a study in journal Experimental Physiology wherein they looked at skin blood flow and sweating responses in 36 men and 24 women. Researchers from University of Wollongong in Australia state that larger individuals sweat more than smaller ones and during sports activities as well as warm and tolerable conditions.

“Gender has long been thought to influence sweating and skin blood flow during heat stress. We found that these heat loss responses are, in fact, gender independent during exercise in conditions where the body can successfully regulate its temperature,” said lead author Sean Notley from the University of Wollongong in Australia.

With body having two ways to cool itself: sweating and increasing circulation to the skin’s surface, body shape and size are two key things that dictates which of these two is relied upon for heat loss, the researchers said. They found that in case of smaller males and females with more surface area per kg of body mass are more dependent on heat loss through increasing circulation and less dependent upon sweating.

For the study, published in the journal Experimental Physiology, the team looked at skin blood flow and sweating responses in 36 men and 24 women. They performed two trials — one of light exercise and the other of moderate — at 28 degrees Celsius and 36 per cent humidity.

These are conditions where the body is able to mitigate the additional heat produced during exercise and prevent further rises in body temperature by increasing sweating and blood flow to the skin. The results showed that the body temperature changes were same in all participants within each trial regardless of the gender.


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