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What am I to infer from this? That people prone to dementia tend to have less energy for voluntary vigorous physical activity?

If not, why not?



>vigorous physical activity

140 minutes/week is really really far from vigorous.


"vigorous" isn't a period of time or an amount of time per week. It describes the level of physical activity, not the amount.


Might be confusing terms here. Vigorous exercise tends to describe high intensity rather than high volume.




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