Key result
In COPD patients, maximal inspiratory pressure strongly correlated with low-frequency (r=-0.74; P=0.01) and high-frequency (r=0.74; P=0.01) heart rate variability during a respiratory maneuver.
Why the study?
Does respiratory muscle strength correlate with cardiac autonomic modulation (HRV) in patients with COPD?
Population
10 patients with moderate to very severe chronic obstructive pulmonary disease (COPD)
Comparison
Respiratory sinus arrhythmia maneuver and… vs Resting condition in the sitting position
Design
Cross-sectional
Authors
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May link RMS to autonomic changes in COPD; leaves open causal effects and need for trials.
Cross-Sectional (n=10)
Does respiratory muscle strength correlate with cardiac autonomic modulation (HRV) in patients with COPD?
Effect estimate: r=-0.74
p-value: p=0.01
In patients with COPD, impaired respiratory muscle strength is significantly associated with altered cardiac autonomic control, characterized by increased sympathetic and reduced parasympathetic modulation.
Goulart et al. (2016) conducted a cross-sectional in Chronic obstructive pulmonary disease (COPD) (n=10). Respiratory muscle strength (RMS) was evaluated on Association between respiratory muscle strength and HRV spectral indices (r=-0.74, p=0.01). In COPD patients, maximal inspiratory pressure strongly correlated with low-frequency (r=-0.74; P=0.01) and high-frequency (r=0.74; P=0.01) heart rate variability during a respiratory maneuver.
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