Cheuk-Kwan Sun, Cyuan-Cin Liu, Wei-Min Liu, Hsien-Tsai Wu, Ruay-Ming Huang, An-Bang Liu
Objective: Heart rate variability (HRV) analysis using electrocardiographic R-R intervals (RRIs) in either a time or a frequency domain is a useful tool for assessing cardiac autonomic dysfunction in clinical research. For convenience, pulse-pulse intervals (PPIs) acquired by photoplethysmography have been used to assess HRV. However, the compatibility of PPI with RRI is controversial. Materials and Methods: In this study, we investigated the compatibility of PPI with RRI in five groups of participants, including nonoverweight young individuals with a body mass index (BMI) <24 kg/m2 (Group 1, n = 20, aged 18-40 years), overweight young individuals with a BMI ≥24 kg/m2 (Group 2, n = 13, aged 21-38 years), nonoverweight upper middle-aged individuals with a BMI <24 kg/m2 (Group 3, n = 21, aged 45-89 years), overweight upper middle-aged individuals with a BMI ≥24 kg/m2 (Group 4, n = 14, aged 43-74 years), and diabetic patients with a BMI ≥24 kg/m2 (Group 5, n = 19, aged 35-74 years)...
January 2020: Tzu-chi Medical Journal