Key result
Slow paced breathing at 6 breaths/min significantly increased RSA amplitude (P<0.01) but did not significantly increase the proportion of heart beats in inspiration (P=0.34).
Why the study?
Does slow paced breathing increase the clustering of heart beats in inspiration in human subjects?
Population
12 human subjects
Design
Other
Authors
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Slow breathing increases RSA amplitude without raising inspiratory heartbeat proportion; leaves open RSA mechanisms for gas exchange efficiency.
Does slow paced breathing increase the clustering of heart beats in inspiration in human subjects?
p-value: p=0.34
Contrary to assumptions, high levels of respiratory sinus arrhythmia enhanced by slow breathing do not cause significant clustering of heart beats in inspiration, challenging the hypothesis that RSA optimizes pulmonary gas exchange efficiency via this mechanism.
Tzeng et al. (2008) studied Physiological respiratory sinus arrhythmia (n=12). Slow paced breathing was evaluated on Proportion of heart beats in inspiration (p=0.34). Slow paced breathing at 6 breaths/min significantly increased RSA amplitude (P<0.01) but did not significantly increase the proportion of heart beats in inspiration (P=0.34).
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