Inter- and Intra-Individual Analysis of Post-Exercise Hypotension Following a Single Bout of High-Intensity Interval
E C Costa1, T C B Dantas1, L F de Farias Junior1
1Department of Physical Education, Federal University of Rio Grande do Norte, Natal, RN, Brazil.
Post-exercise blood pressure (BP) responses vary significantly between individuals and even within the same person depending on the exercise type. This variability suggests that post-exercise hypotension is a complex physiological response.
Area of Science:
- Exercise Physiology
- Cardiovascular Health
Background:
- Post-exercise blood pressure (BP) changes are increasingly recognized for predicting exercise training responsiveness.
- Individual responses to exercise interventions, termed "high" and "low responders," are crucial for personalized training.
- Understanding BP variability after exercise is key to optimizing exercise prescriptions.
Purpose of the Study:
- To investigate inter-individual and intra-individual BP responsiveness after high-intensity interval exercise (HIIE) and continuous exercise (CE).
- To determine if BP responsiveness differs between HIIE and CE protocols within the same individuals.
- To analyze the heterogeneity of post-exercise hypotension (PEH) in normotensive men.
Main Methods:
- Normotensive men (n=14) underwent single bouts of HIIE and CE.
- BP was monitored for 60 minutes post-exercise.
- Minimal detectable change (MDC) was calculated to classify "low" (no PEH) and "high" (PEH occurrence) responders.
- Inter-individual (within protocol) and intra-individual (between protocols) variability in BP response was assessed.
Main Results:
- Both HIIE and CE elicited "low" and "high" BP responders (inter-individual variability).
- Significant BP variability was observed between exercise protocols for some individuals (intra-individual variability), particularly for systolic BP.
- The MDC for systolic and diastolic BP was determined as 5.8 and 7.0 mmHg, respectively.
Conclusions:
- Post-exercise hypotension is a heterogeneous physiological response.
- Individual BP responsiveness to exercise can be dependent on the specific exercise protocol.
- Further research is needed to confirm these preliminary findings on exercise-induced BP changes.
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