O2 Pulse Patterns in Male Master Athletes with Normal and Abnormal Exercise Tests

Danny A.J.P. van de Sande (Corresponding author), Thijs Schoots, Jan Hoogsteen, Pieter A. Doevendans, Hareld M.C. Kemps

Research output: Contribution to journalArticleAcademicpeer-review

2 Citations (Scopus)

Abstract

Purpose The clinical relevance of abnormal exercise testing (ET) results (at least 0.1 mV ST segment depression measured during exercise or recovery in three consecutive beats) in athletes without obstructive coronary artery disease (CAD) is not well understood. It is unknown whether this phenomenon reflects a physiological adaptation to sport or a truly ischemic response and a concomitant attenuated stroke volume (SV) response. The aim of this study was to investigate if athletes with abnormal ET results without obstructive CAD showed signs of an attenuated SV response using cardiopulmonary ET parameters. Methods A total of 78 male master athletes with abnormal ET results without obstructive CAD underwent cardiopulmonary ET. ΔO2 pulse/Δwork rate (WR), ΔVO2/ΔWR, and Δheart rate (HR)/ΔWR were assessed and compared with data from 78 male master athletes with normal ET results, matched for age, sports characteristics, and exercise capacity. Results The ΔO2 pulse/ΔWR ratio beyond anaerobic threshold in athletes with abnormal ET results was lower than that in athletes with normal ET results (0.73 ± 0.41 vs 1.12 ± 0.54, respectively, P < 0.001). The ΔVO2/ΔWR ratio was also lower in athletes with abnormal ET results (0.9 ± 0.2 vs 1.0 ± 0.3, respectively, P = 0.041). Furthermore, these athletes showed a greater increase in HR in the last 2 min of exercise (ΔHR/ΔWR ratio: 1.19 ± 0.5 vs 0.80 ± 0.6, P < 0.001). Conclusion Athletes with abnormal ET results without obstructive CAD showed an attenuated O2 pulse slope, decreased ΔVO2/ΔWR ratio, and increased ΔHR/ΔWR ratio beyond anaerobic threshold when compared with athletes with a normal ET result. These results support the hypothesis that at least a part of the athletes with an abnormal ET in absence of obstructive CAD have an attenuated SV response at high-intensity exercise.

Original languageEnglish
Pages (from-to)12-18
Number of pages7
JournalMedicine and Science in Sports and Exercise
Volume51
Issue number1
DOIs
Publication statusPublished - 1 Jan 2019

Keywords

  • ATHLETES
  • CARDIOPULMONARY EXERCISE TESTING
  • MICROVASCULAR DYSFUNCTION
  • MYOCARDIAL ISCHEMIA
  • OXYGEN PULSE
  • SCREENING
  • Prospective Studies
  • Sports/physiology
  • Humans
  • Middle Aged
  • Pulse
  • Exercise/physiology
  • Male
  • Stroke Volume/physiology
  • Anaerobic Threshold/physiology
  • Microcirculation/physiology
  • Exercise Test
  • Oxygen Consumption/physiology
  • Adult

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