Loughborough University
Leicestershire, UK
LE11 3TU
+44 (0)1509 263171
Loughborough University

Loughborough University Institutional Repository

Please use this identifier to cite or link to this item: https://dspace.lboro.ac.uk/2134/20681

Title: Influence of computer work under time pressure on cardiac activity
Authors: Shi, Ping
Hu, Sijung
Yu, Hongliu
Keywords: Stress
Computer-mouse work
Electrocardiogram (ECG)
Heart rate variability (HRV)
Spectral analysis
Poincare plot
Cardiac activity
Issue Date: 2015
Publisher: © Elsevier
Citation: SHI, P., HU, S. and YU, H., 2015. Influence of computer work under time pressure on cardiac activity. Computers in Biology and Medicine, 58, pp.40-45.
Abstract: Computer users are often under stress when required to complete computer work within a required time. Work stress has repeatedly been associated with an increased risk for cardiovascular disease. The present study examined the effects of time pressure workload during computer tasks on cardiac activity in 20 healthy subjects. Heart rate, time domain and frequency domain indices of heart rate variability (HRV) and Poincare plot parameters were compared among five computer tasks and two rest periods. Faster heart rate and decreased standard deviation of R-R interval were noted in response to computer tasks under time pressure. The Poincare plot parameters showed significant differences between different levels of time pressure workload during computer tasks, and between computer tasks and the rest periods. In contrast, no significant differences were identified for the frequency domain indices of HRV. The results suggest that the quantitative Poincare plot analysis used in this study was able to reveal the intrinsic nonlinear nature of the autonomically regulated cardiac rhythm. Specifically, heightened vagal tone occurred during the relaxation computer tasks without time pressure. In contrast, the stressful computer tasks with added time pressure stimulated cardiac sympathetic activity.
Description: This document is Closed Access.
Sponsor: This work was supported by Innovation Program of Shanghai Municipal Education Commission (Grant no. 14YZ091).
Version: Published
DOI: 10.1016/j.compbiomed.2015.01.001
URI: https://dspace.lboro.ac.uk/2134/20681
Publisher Link: http://dx.doi.org/10.1016/j.compbiomed.2015.01.001
ISSN: 0010-4825
Appears in Collections:Closed Access (Mechanical, Electrical and Manufacturing Engineering)

Files associated with this item:

File Description SizeFormat
Influence of computer work under time pressure on cardiac activity.pdfPublished version701.36 kBAdobe PDFView/Open


SFX Query

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.