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Impact of High-intensity Interval Exercise and Moderate-Intensity Continuous Exercise on the Cardiac Troponin T Level at an Early Stage of Training
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Optimizing sprint interval exercise for post-exercise hypotension: A randomized crossover trial.

Sascha Ketelhut1, Martin Möhle1, Tina Gürlich1

  • 1Institute of Sport Science, Department of Exercise Science and Sports Medicine, Martin Luther University Halle-Wittenberg, Halle (Saale), Germany.

European Journal of Sport Science
|February 24, 2022
PubMed
Summary
This summary is machine-generated.

Longer rest intervals during sprint interval training (SIT) enhance post-exercise hypotension. Manipulating rest periods did not affect oxygen consumption during the training sessions.

Keywords:
Sprint interval trainingblood pressurehemodynamicspost-exercise hypotensionrest interval manipulation

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Area of Science:

  • Exercise Physiology
  • Cardiovascular Physiology

Background:

  • Sprint Interval Training (SIT) is an effective exercise modality.
  • Post-exercise hypotension (PEH) is a significant cardiovascular adaptation.
  • Optimizing SIT protocols for PEH requires further investigation.

Purpose of the Study:

  • To investigate the impact of varying rest intervals within SIT on PEH.
  • To assess the effect of rest interval manipulation on within-session oxygen consumption (VO2).

Main Methods:

  • Thirty healthy, trained adults underwent two SIT protocols with 1-minute (R1) or 3-minute (R3) active recovery.
  • Peripheral and central blood pressures, aortic pulse wave velocity (aPWV), stroke volume (SV), and heart rate (HR) were measured pre- and post-exercise.
  • Oxygen consumption (VO2) was monitored throughout both SIT protocols.

Main Results:

  • The 3-minute rest interval (R3) significantly reduced peripheral systolic and diastolic blood pressure, central systolic and diastolic blood pressure, and aPWV.
  • The 1-minute rest interval (R1) did not elicit significant changes in these cardiovascular parameters, but did reduce stroke volume.
  • No significant differences in time spent at high percentages of maximal VO2 were observed between R1 and R3.

Conclusions:

  • Longer rest intervals (3 minutes) during SIT promote greater post-exercise hypotension compared to shorter intervals (1 minute).
  • Rest interval manipulation does not appear to influence the oxygen consumption response during SIT.
  • SIT protocols can be tailored by adjusting rest intervals to potentiate cardiovascular benefits like PEH.