Increased VLDL-TAG Turnover during and after Acute Moderate-Intensity Exercise
| Autor: | Dennis C. Gore, Robert R. Wolfe, Béatrice Morio, Ulf Holmbäck |
|---|---|
| Rok vydání: | 2004 |
| Předmět: |
Adult
Glycerol Male medicine.medical_specialty Very low-density lipoprotein Palmitates Energy metabolism Physical Therapy Sports Therapy and Rehabilitation Late recovery Physical exercise Increased VLDL Lipoproteins VLDL Internal medicine medicine Humans Orthopedics and Sports Medicine Exercise physiology Exercise Triglycerides Analysis of Variance Chemistry Deuterium Respiratory Function Tests Intensity (physics) Endocrinology Case-Control Studies Linear Models Female Early phase |
| Zdroj: | Medicine & Science in Sports & Exercise. :801-806 |
| ISSN: | 0195-9131 |
| Popis: | Purpose and Methods: Breakdown rates of very low density lipoprotein triacylglycerols (VLDL-TAG) were quantified before (3 h), during (45 min), and after (3 h) moderate physical exercise at 40% VO 2max in young sedentary subjects (four male and four female, age 29.8 ± 1.6 yr. BMI 24.1 ± 0.9 kg.m -2 , VO 2max 37.0 ± 1.7 mL.kg -1 .min -1 ), using boluses of 2 H 5 -glycerol (100 μmol.kg -1 ) and 2 H 2 -palmitate (6.6 μmol.kg -1 ). The catabolic rates of VLDL-TAG were calculated from the decay in the isotopic enrichment using a single-pool model. The results were compared with those obtained during 6 h of rest in five of the same volunteers. Results: VLDL-TAG concentration remained constant throughout the study with exercise (P = NS). The fractional catabolic rate was nearly doubled from rest to exercise (P < 0.05 vs rest) and increased to an even greater extent during the early phase of recovery (P < 0.001 vs rest). During the late recovery phase, the value returned to the preexercise value (P = NS vs rest). The values for the absolute catabolic rate (k abs ) followed the same trend. Conclusion: VLDL-TAG turnover was increased during exercise and during the early phase of recovery. |
| Databáze: | OpenAIRE |
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