Changes in blood markers of serotoninergic activity following high intensity cycle ergometer exercise

J S Baker, R Morgan, D Hullin, L M Castell, D M Bailey, Bruce Davies

Research output: Contribution to journalArticlepeer-review

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 languageEnglish
Pages (from-to)191-203
Number of pages13
JournalResearch in Sports Medicine
Volume14
Issue number3
DOIs
Publication statusPublished - 14 Sept 2006

Keywords

  • Adult
  • Biomarkers
  • Epinephrine
  • Ergometry
  • Fatty Acids, Nonesterified
  • Humans
  • Lactic Acid
  • Male
  • Norepinephrine
  • Physical Endurance
  • Prolactin
  • Tryptophan

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