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Physical fitness since childhood is associated with cerebellar grey matter volume in adolescents. According to a recent study conducted at the University of Jyväskylä and the University of Eastern Finland, those who were stronger, faster and more agile, in other words, had better neuromuscular fitness since childhood, had larger Crus I grey matter volume in adolescence.
Despite the importance of the developing cerebellum on cognition and learning, the associations between physical fitness and cerebellar volume in adolescents have remained unclear. This study examined the associations of physical fitness with grey matter volume of cerebellar lobules related to cognition in adolescents, and whether these associations differed between females and males.
Those adolescents with better neuromuscular fitness since childhood had larger Crus I grey matter volume. However, adolescents with better cardiorespiratory fitness had smaller total cerebellar grey matter volume. Moreover, males with better neuromuscular fitness since childhood had smaller Crus II grey matter volume.
“Our study highlights the importance of physical activity through childhood and adolescence, leading to better physical fitness, as it might be relevant to cerebellar volumes related to cognition and learning. However, the associations we observed are in part contradictory,” says Doctoral Researcher Petri Jalanko from the Faculty of Sport and Health Sciences at the University of Jyväskylä.
“The study sheds light on the associations between physical fitness and the cerebellum. Future randomised controlled trials utilising direct cardiorespiratory fitness measurements and novel brain imaging to assess a larger population and both sexes separately are needed to better understand the associations and causality between physical fitness and cerebellar volumes in adolescents,” Jalanko says.
The findings are from the FitBrain study, which included 40 participants from the 8-year follow-up examinations of…
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