Effects of a Single Dose of Caffeine on Resting Cardiovascular System of Normal Young Black African Adults

Abstract

The objective of this study was to determine the effect of 5mg/kg body weight dose of caffeine on cardiovascular system of normal young adult males of Black African Origin. Twenty normal young adult male volunteers participated. A repeated measures 2 randomized Crosse over (counter balanced) double blind design was used in data collection. One hour post caffeine ingestion of varied doses (5mg/kg body weight) and placebo dose cardiovascular (SBP, DBP & HR) parameters were assessed. Repeated measures t-test was used to assess the level of significance in all variables of
interest. The result showed no significant effect of varied doses (5mg/Kg) of caffeine over placebo in all cardiovascular parameters assessed at P<0.05. It was concluded that instant
soluble coffee (Caffeine) dose up to approximately 3199mg (300mg caffeine) seems not to stress the cardiovascular system of normal young black African adults.

African Research Review Vol. 2 (1) 2008: pp. 261-271