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- 저자 : ( Nicole M Wedick ) (검색결과 1 건)
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( Patricia R Peter ),( Kyung Hee Park ),( Joo Young Huh ),( Nicole M Wedick ),( Christos S Mantzoros ) 전남대학교 약품개발연구소 2014 약품개발연구지 Vol.23 No.-
Irisin, secreted by skeletal muscle and possibly fat, is hypothesized to play an important role in modulating energy expenditure, obesity and metabolism. Coffee consumption also increases energy expenditure and leads to positive metabolic effects, but whether these effects are mediated by irisin remains unknown. The objective of this study was to determine the association between baseline irisin levels and the metabolic profile in humans and to investigate whether consumption of caffeinated coffee alters irisin levels. To this end, a secondary analysis was performed Investigating irisin levels at baseline and after eight weeks in 32 healthy, overweight coffee drinkers who were randomized to consumption of 5 cups per day of instant caffeinated coffee, decaffeinated coffee, or water. Spearman correlation and analysis of covariance analyses were performed to identify possible associations. Irisin levels were positively correlated with waist circumference (r=0.41, p=0.02), fat mass (r=O.44, p=O.Ol) and CRP (r=0.47, p=0.007). Though there was a trend towards increased levels of irisin over time in the caffeinated coffee group (+1.8%) when compared to the placebo group (-4%) this did not reach statistical significance (p = 0.75 for the trend). This first randomized trial failed to reveal any effects of coffee consumption on irisin levels, but a larger trial, appropriately sized on the basis of data provided by this study, is needed to conclusively investigate such a relationship. Trial Registration: Clinicaltrials.gov NCTOO305097
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