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A relationship between physical fitness and cognition, although intuitively believable, has been difficult to document. Bamers to clarifying the relationship are the difficulties in measuring physical fitness and cognitive function, the use of differential research designs, and failures to identify and differentiate cognitive functions as well as to account for cognitive learning. Nevertheless, the fitness—cognition relationship, which continues to be reported and studied, seems compelling. It's precise nature, however, remains to be clarified.
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Spirduso et al. (1995) studied this question.
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