Pulmonary function testing transiently increased sympathetic activity (LF P=0.041, LF/HF P=0.049) and decreased parasympathetic activity (HF P=0.052) without changing RMSSD or mean heart rate in healthy young adults.
RCT (n=48)
No
Does pulmonary function testing alter autonomic nervous system activity in healthy young adults?
Pulmonary function testing transiently alters autonomic balance toward sympathetic dominance, highlighting the need to perform baseline autonomic measurements prior to respiratory testing.
Respiratory maneuvers during PFT may temporarily alter ANS activity, particularly affecting parasympathetic-sympathetic balance. The differences between the first and second measurements emphasize the importance of adequate rest periods before HRV assessment. Measurements taken prior to PFT appear to be more reliable for the accurate evaluation of autonomic function.
Yalçın et al. (Fri,) conducted a rct in Healthy university students aged 18-25 years with no systemic diseases or active diagnoses (n=48). Pulmonary function test (PFT) involving forced respiratory maneuvers using Medwelt SP10 spirometer vs. Baseline autonomic measurements before PFT and measurements after rest period but before PFT was evaluated on Heart rate variability (HRV) parameters assessing autonomic nervous system (ANS) activity before and after pulmonary function test. Pulmonary function testing transiently increased sympathetic activity (LF P=0.041, LF/HF P=0.049) and decreased parasympathetic activity (HF P=0.052) without changing RMSSD or mean heart rate in healthy young adults.