Abstract
The purpose of this study was to measure concentrations of adrenaline (A), noradrenaline (NE), free tryptophan (f-Trp), prolactin (PRL), nonesterified fatty acids (NEFA), and blood lactate following 30 s of high-intensity cycle ergometer exercise. Adrenaline (A) and NE concentrations increased immediately postexercise (P < 0.05) and returned to levels observed at baseline 24 h later. Plasma f-Trp concentration decreased by 23.5% immediately following exercise (P < 0.05). There were no changes observed in serum concentrations of PRL. Plasma NEFA concentrations decreased immediately following exercise by 46% (P < 0.05) and returned to baseline values 24 h later. Whole blood lactate concentrations increased immediately post exercise (P < 0.05), and were higher than those measured 24 h later (P < 0.05). These findings indicate that blood markers of serotoninergic activity were unaltered by a single 30 s bout of maximal cycling.
Original language | English |
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Pages (from-to) | 191-203 |
Number of pages | 13 |
Journal | Research in Sports Medicine |
Volume | 14 |
Issue number | 3 |
DOIs | |
Publication status | Published - 14 Sept 2006 |
Keywords
- Adult
- Biomarkers
- Epinephrine
- Ergometry
- Fatty Acids, Nonesterified
- Humans
- Lactic Acid
- Male
- Norepinephrine
- Physical Endurance
- Prolactin
- Tryptophan