pneumograph การใช้

• A pneumograph is often used in conjunction with an electrocardiograph ( ECG ) or photoplethysmograph ( PPG ) in heart rate variability ( HRV ) training.
• Biofeedback therapists use pneumograph biofeedback with patients diagnosed with anxiety disorders, asthma, chronic pulmonary obstructive disorder ( COPD ), essential hypertension, panic attacks, and stress.