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Effect of calcium intake on fat oxidation in adults: a meta-analysis of randomized, controlled trials.
MedLine Citation:
PMID:  22708505     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
Calcium intake is likely to increase body fat loss during energy restriction. Part of this effect may be explained by increased fat oxidation in the presence of a similar energy balance, yet studies have not provided a conclusive answer. Therefore a meta-analysis was performed to determine whether chronic or acute high calcium intake increases fat oxidation. Randomized controlled trials of high calcium intake in human adults where measures of fat oxidation were taken were included. A random-effects meta-analysis was performed on outcomes expressed as standardized mean differences. Chronic high calcium intake increased fat oxidation by a standardized mean difference of 0.42 (95% confidence intervals: 0.14, 0.69; P = 0.003; estimated to correspond to an 11% increase), displaying low heterogeneity (I(2)  = 18%), which was more prominent when habitual calcium intake was low (<700 mg d(-1) ). Acute high calcium intake increased fat oxidation by a standardized mean difference of 0.41 (0.04, 0.77; P = 0.03), with low heterogeneity (I(2)  = 19%), yet sensitivity analysis revealed that this effect was relatively weak. In conclusion, chronic high calcium intake is likely to increase rates of fat oxidation. The effects of acute high calcium intake appear to point in the same direction, but further work is needed to permit a greater degree of certainty.
Authors:
J T Gonzalez; P L S Rumbold; E J Stevenson
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-6-19
Journal Detail:
Title:  Obesity reviews : an official journal of the International Association for the Study of Obesity     Volume:  -     ISSN:  1467-789X     ISO Abbreviation:  -     Publication Date:  2012 Jun 
Date Detail:
Created Date:  2012-6-19     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  100897395     Medline TA:  Obes Rev     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
© 2012 The Authors. obesity reviews © 2012 International Association for the Study of Obesity.
Affiliation:
Brain, Performance and Nutrition Research Centre, School of Life Sciences, Northumbria University, Newcastle upon Tyne, UK Department of Sport and Exercise Sciences, School of Life Sciences, Northumbria University, Newcastle upon Tyne, UK.
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