Plasma pyridoxal and pyridoxal 5′-phosphate concentrations in response to ingestion of water or glucose polymer during a 2-h run
| Autor: | B L Smoak, V. G. Villanueva, A. Hofmann, R. D. Reynolds, Patricia A. Deuster |
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| Rok vydání: | 1991 |
| Předmět: |
Adult
Blood Glucose Vitamin medicine.medical_specialty Pyridoxal Drinking Medicine (miscellaneous) Fatty Acids Nonesterified chemistry.chemical_compound Glycogen phosphorylase Internal medicine medicine Humans Ingestion Aspartate Aminotransferases Lactic Acid Pyridoxal phosphate Exercise Glucans Nutrition and Dietetics biology Alkaline Phosphatase Phosphate Solutions Endocrinology Alanine transaminase chemistry Biochemistry Pyridoxal Phosphate Lactates Physical Endurance biology.protein Alkaline phosphatase Female Energy Metabolism |
| Zdroj: | Scopus-Elsevier |
| ISSN: | 0002-9165 |
| DOI: | 10.1093/ajcn/53.1.84 |
| Popis: | The effects of ingesting a glucose polymer solution (GP) or water (W) on plasma pyridoxal 5'-phosphate (PLP) and pyridoxal (PL) concentrations were compared in six men (age: 30 +/- 2 y; VO2max: 57.4 +/- 3.2 mL.kg-1.min-1) under running (R) and control (C) conditions. Subjects ran for 2 h at 60-65% of VO2max for R and remained standing for C. For both R and C, 200 mL W or GP was ingested before (0-time) and every 30 min while running (30, 60, and 90 min). Plasma PLP decreased to 95% and 87% of 0-time at 180 min for WC and GPC and increased to 126% and 119% at 90 min and to 124% and 119% at 120 min for WR and GPR. By 60 min postrun, plasma PLP was 98% (WR) and 101% (GPR) of 0-time. There were no significant differences between W and GP conditions. Changes in PLP were not related to plasma volume or blood glucose, free fatty acids, lactate, alkaline phosphatase, aspartate aminotransferase, or alanine aminotransferase. No significant changes in plasma PL were noted. Exercise induces an increase in plasma PLP, perhaps due to transfer of B-6 vitamers from liver to skeletal muscle. |
| Databáze: | OpenAIRE |
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