Experiments conducted as part of Advanced BME Lab (AM5019) during December 2021 & January 2022.
OBJECTIVE:
i. Record the PPG to obtain the heart rate during normal breathing for three intervals:
a. inhalation; b. holding of breath; c. exhalation
ii. Record the PPG data to obtain the heart rate while applying a constant force to a hand gripper (isometric compression) for three intervals:
a. inhalation; b. holding of breath; c. exhalation
iii. Observe the heart rate variability in the above cases and perform time-domain analysis