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- Title
Psychological Stressor Affects Autonomic Cardiovascular Function and Peripheral Circulation.
- Authors
Toshihide Harada; Satomi Aoi; Hiromi Ikeda; Makoto Inoue; Noriko Tamura; Ryuji Koide; Akira Sakai; Mikako Mibu; Satoshi Imaizumi; Fumiko Ishizaki; Yumiko Nitta; Kohsaku Nitta
- Abstract
Objective: Psychological stressor can contribute to health. This study was performed to reveal new objective biomarkers of psychological stressor. Design: A clinical study. Materials and methods: The subjects were 31 healthy university students. As a psychological stressor, we performed a Raven's Colored Progressive Materices for 2 min. Accelerated plethysmography (APC) was performed using a pulsimeter with the sensor positioned on the tip of the ventral side of the index finger. Heart rate variability (HRV) was determined in all subjects using the spectral analysis. Maximum entropy method (MEM) and fast fourier transform (FFT) low (LF) and high frequency (HF) component powers and LF/HF ratio were determined. Peripheral vein width was estimated using near-infrared spectrophotoscopy of Sysmex Astrim SU. Results: MEM and FFT HF component powers decreased significantly. The increases of MEM LF/HF ratio after psychological stressor were statistically significant. The increases of FFT LF/HF ratio after psychological stressor were statistically significant. Peripheral vein width negative correlated with the MEM and FFT LF/HF ratio after psychological stressor. Conclusions: These results suggest that determining MEM and FFT LF and HF component powers and the LF/HF ratio using spectral analysis and estimating peripheral vein width using near-infrared spectrophotoscopy prove useful in objective observing psychological stressor.
- Subjects
AUTONOMIC nervous system; BIOMARKERS; HEART beat; PERIPHERAL circulation; PLETHYSMOGRAPHY; SPECTROPHOTOMETRY; STATISTICS; PSYCHOLOGICAL stress; T-test (Statistics); DATA analysis; UNDERGRADUATES; DATA analysis software; DESCRIPTIVE statistics
- Publication
International Medical Journal, 2016, Vol 23, Issue 6, p611
- ISSN
1341-2051
- Publication type
Article