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Muscle fibres become misshapen as we age but exercise can restore them


An older man weight training

Weight training seems to restore misshapen muscles

Extreme Photographer/Getty Images

Our muscles fibres can become misshapen as we age, but resistance training seems to at least partially restore them, according to a study in about 200 people.

Some past research has reported misshapen muscle fibres in older people, so, to investigate, Casper Søendenbroe at Copenhagen University Hospital in Denmark and his colleagues looked back at samples they had taken from people’s thigh muscles for previous studies. These came from about 200 people aged between 20 and 97 who were largely physically inactive, …

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