Assertion: creatine's effect | /r/HasProperty | data
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Source sentences:
text: In 2002, Rawson et al. examined the effects of 5 days of creatine supplementation at a dose of 20 g/d on muscle phosphocreatine levels in younger (n = 8, 24 ± 1.4 yr) and older (n = 7, 70 ± 2.9 yr; data presented as means ± standard error) men.