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Article
December 3, 1973

Instantaneous and Sudden Deaths

Author Affiliations

Citrus County Health Department Inverness, Fla

JAMA. 1973;226(10):1229. doi:10.1001/jama.1973.03230100051020

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Abstract

To the Editor.—  I was surprised at the suggestion of the authors that moderate or severe physical activity should not be indulged in. The authors do not make clear whether they believe such restriction of activity should be limited to known coronary patients or to the public at large. Certainly their data do not support such a generalization.The classification of activity used by the authors is not very informative. There is a gross classification of intensity of exercise, but no indication of frequency or average duration of exercise, both of which are rather important factors. A person who plays handball or tennis once a week may think of himself as being accustomed to that level of activity, whereas substantial data indicate that a higher frequency of exercise is necessary to maintain fitness.Therefore, if one is going to examine exercise in relation to heart disease in any meaningful way,

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