What did a longitudinal study by Matthews et al. (2006 ) reveal regarding people playing video games?
a) That blood pressure changes during video games predicted coronary calcification 13 years later.
b) That blood pressure changes during video games predicted hypertension 13 years later.
c) That blood pressure changes during video games predicted no health problems 13 years later.
d) That blood pressure changes during video games predicted low blood pressure 13 years later.
a
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