Background: Protein supplementation has been shown to reduce the increases in intrahepatic triglyceride (IHTG) content induced by acute hypercaloric high-fat and high-fructose diets in humans.
Objective: To assess the effect of a 12-wk iso-energetic high protein-low carbohydrate (HPLC) diet compared with an iso-energetic high carbohydrate-low protein (HCLP) diet on IHTG content in healthy non-obese subjects, at a constant body weight.
Design: Seven men and nine women [mean ± SD age: 24 ± 5 y; BMI: 22.9 ± 2.1 kg/m2] were randomly allocated to a HPLC [30/35/35% of energy (En%) from protein/carbohydrate/fat] or a HCLP (5/60/35 En%) diet by stratification on sex, age and BMI. Dietary guidelines were prescribed based on individual daily energy requirements. IHTG content was measured by 1H-magnetic resonance spectroscopy before and after the dietary intervention.
Results: IHTG content changed in different directions with the HPLC (CH2H2O: 0.23 ± 0.17 to 0.20 ± 0.10; IHTG%: 0.25 ± 0.20% to 0.22 ± 0.11%) compared with the HCLP diet (CH2H2O: 0.34 ± 0.20 vs. 0.38 ± 0.21; IHTG%: 0.38 ± 0.22% vs. 0.43 ± 0.24%), which resulted in a lower IHTG content in the HPLC compared with the HCLP diet group after 12 weeks, which almost reached statistical significance (P = 0.055).
Conclusions: A HPLC vs. a HCLP diet has the potential to preserve vs. enlarge IHTG content in healthy non-obese subjects at a constant body weight.
Trial Registration: Clinicaltrials.gov NCT01551238.
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|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4199596 | PMC |
| http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0109617 | PLOS |
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