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May 22, 2018, 11:45 am IST
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Kids' muscles more powerful than athletes

Kids' muscles more powerful than athletes

 May 03, 2018

Ever wondered why those little bundles of joy never fail to amaze you with their overflowing energy? Well, it's because their endurance level is at par with professional athletes!

Scientists have discovered that children not only have fatigue-resistant muscles, but recover very quickly from high-intensity exercise, even faster than well-trained adult endurance athletes. This are the findings of a new research, published recently in open-access journal Frontiers in Physiology, which compared the energy output and post-exercise recovery rates of young boys, untrained adults and endurance athletes.

'The research could help develop athletic potential in children as well as improve our understanding of how our bodies change from childhood to adulthood, including how these processes contribute to the risk of diseases such as diabetes," said Sébastien Ratel, Associate Professor in Exercise Physiology, who completed this study at the Université Clermont Auvergne, France.

"During many physical tasks, children might tire earlier than adults because they have limited cardiovascular capability, tend to adopt less-efficient movement patterns and need to take more steps to move a given distance.

'Our research shows children have overcome some of these limitations through the development of fatigue-resistant muscles and the ability to recover very quickly from high-intensity exercise," said co-author Anthony Blazevich, Professor in Biomechanics at Edith Cowan University, Australia.

Previous research has shown that children do not tire as quickly as untrained adults during physical tasks. Dr Ratel and Dr Blazevich suggested the energy profiles of children were comparable to endurance athletes.

The researchers asked three different groups -- boys in the age group of 8-12, untrained adults and national level runners and cyclists -- to perform cycling tasks.

The participants' heart-rate, oxygen levels and lactate-removal rates were checked after the cycling tasks to see how quickly they recovered. In all tests, children outperformed the untrained adults.

"We found the children used more of their aerobic metabolism and were therefore less tired during the high-intensity physical activities. They also recovered very quickly, even faster than the well-trained adult endurance athletes, as demonstrated by their faster heart-rate recovery and ability to remove blood lactate.

"This may explain why children seem to have the ability to play and play and play, long after adults have become tired," the researchers noted.

'Our study shows that muscle endurance is often very good in children, so it might be better to focus on other areas of fitness, such as their sports technique, sprint speed or muscle strength.

'This may help to optimise physical training in children, so that they perform better and enjoy sports more. With the rise in diseases related to physical inactivity, it is helpful to understand the physiological changes with growth that might contribute to the risk of disease,' Science Daily quoted the researchers as saying.

'Our research indicates that aerobic fitness, at least at the muscle level, decreases significantly as children move into adulthood, which is around the time increases in diseases, such as diabetes occur.

"It will be interesting in future research to determine whether the muscular changes we have observed are directly related to disease risk. At least, our results might provide motivation for practitioners to maintain muscle fitness as children grow up; it seems that being a child might be healthy for us," they added. (UNI)



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