Key result
A maximal incremental treadmill test caused a decrease in parasympathetic HRV variables and an increase in sympathetic variables at high intensities, without complete recovery after 6 minutes.
Why the study?
Heart rate variability analysis is commonly used to evaluate autonomic nervous system functioning at rest, during exercise, and during recovery, amid the growing popularity of street running and specialized endurance training.
Population
One 29-year-old male competitive runner
Comparison
Maximum incremental treadmill test vs baseline and post-exercise recovery
Design
Case study
Follow-up
6 minutes post-exercise
Authors
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Hypothesis-generating for post-exercise autonomic recovery; should not yet change testing or monitoring practices.
Case Report (n=1)
No
HRV monitoring during maximal incremental exercise effectively tracks the expected withdrawal of parasympathetic activity and increase in sympathetic activity, which remain altered 6 minutes post-exercise.
Borges et al. (2022) conducted a case report in Healthy (n=1). Maximum incremental treadmill test vs. Rest was evaluated on Heart rate variability (HRV) indices including PNS and SNS. A maximal incremental treadmill test caused a decrease in parasympathetic HRV variables and an increase in sympathetic variables at high intensities, without complete recovery after 6 minutes.
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