Correlates of Autonomic Function, Hemodynamics, and Physical Activity Performance During Exercise Stress Testing Among Firefighters
Key result
HRV correlates poorly with HRR in firefighters, while HRR links to exercise BP responses.
- adjusted partial Spearman correlation 0.144
- n=92
Why the study?
The relationships between heart rate variability, heart rate recovery, and other physiological measures linked to cardiometabolic disease have not been fully examined, particularly in high-risk groups such as firefighters.
Population
92 firefighters without overt cardiovascular disease
Design
Observational cross-sectional study
Authors
Discussion
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Member takes
Implication
HRV and HRR should not be used interchangeably for autonomic assessment in firefighters; leaves open their distinct value for exercise hemodynamics.
Study Design
Type
Cross-Sectional (n=92)
Structured PICO
P
Population
92 firefighters (96% male, 81% white) without overt cardiovascular disease
I
Intervention
Exercise testing with continuous heart rate (HR) and blood pressure (BP) monitoring followed by 24-hour electrocardiographic monitoring
O
Outcome
Correlations between heart rate variability (HRV), heart rate recovery (HRR), and blood pressure recovery (BPR)surrogate
Main Result
Effect estimate: adjusted partial Spearman correlation 0.144
In firefighters without overt cardiovascular disease, heart rate variability and heart rate recovery poorly correlate, but heart rate recovery is associated with hemodynamic measures during exercise and recovery.
Cite This Study
Dzikowicz et al. (2022) conducted a cross-sectional in Firefighters without overt cardiovascular disease (n=92). Exercise stress testing and 24-hour electrocardiographic monitoring was evaluated on Correlation between heart rate variability (RMSSD) and heart rate recovery (HRR) (adjusted partial Spearman correlation 0.144). Among firefighters, heart rate variability and heart rate recovery poorly converged (adjusted correlation 0.144), whereas heart rate recovery was related to blood pressure responses during exercise.