Journal
HEPATOLOGY
Volume 55, Issue 6, Pages 1738-1745Publisher
WILEY
DOI: 10.1002/hep.25548
Keywords
-
Categories
Funding
- National Institutes of Health [UL1 RR24992 KL2 RR024994, DK052574, DK56341, DK78738, DK37948, HD57796]
Ask authors/readers for more resources
Nonalcoholic fatty liver disease (NAFLD) and alterations in hepatic lipoprotein kinetics are common metabolic complications associated with obesity. Lifestyle modification involving diet-induced weight loss and regular exercise decreases intrahepatic triglyceride (IHTG) content and very low density lipoprotein (VLDL) triglyceride (TG) secretion rate. The aim of this study was to evaluate the weight loss-independent effect of following the physical activity guidelines recommended by the Department of Health and Human Services on IHTG content and VLDL kinetics in obese persons with NAFLD. Eighteen obese people (body mass index [BMI]: 38.1 +/- 4.6 kg/m2) with NAFLD were randomized to 16 weeks of exercise training (45%-55% V O-2peak, 30-60 minutes x 5 days/week; n = 12) or observation (control; n = 6). Magnetic resonance spectroscopy and stable isotope tracer infusions in conjunction with compartmental modeling were used to evaluate IHTG content and hepatic VLDL-TG and apolipoprotein B-100 (apoB-100) secretion rates. Exercise training resulted in a 10.3% +/- 4.6% decrease in IHTG content (P < 0.05), but did not change total body weight (103.1 +/- 4.2 kg before and 102.9 +/- 4.2 kg after training) or percent body fat (38.9% +/- 2.1% before and 39.2% +/- 2.1% after training). Exercise training did not change the hepatic VLDL-TG secretion rate (17.7 +/- 3.9 mu mol/min before and 16.8 +/- 5.4 mu mol/min after training) or VLDL-apoB-100 secretion rate (1.5 +/- 0.5 nmol/min before and 1.6 +/- 0.6 nmol/min after training). Conclusion: Following the Department of Health and Human Services recommended physical activity guidelines has small but beneficial effects on IHTG content, but does not improve hepatic lipoprotein kinetics in obese persons with NAFLD. (HEPATOLOGY 2012;55:17381745)
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available