Development of a wearable system module for monitoring physical and mental workload

Sinbae Kim, Hiromi Nakamura, Toshihiko Yoshida, Masamichi Kishimoto, Yohsuke Imai, Noriaki Matsuki, Takuji Ishikawa, Takami Yamaguchi

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)


The population of most developed countries is rapidly aging, which has created a growing demand for home care. A key issue in medicine is supporting the increasing number of elderly patients, both physically and mentally. In this study, we developed a wearable computer that contained modules for measuring electrocardiograms (ECGs) and femoral artery pulse waves using an accelerometer. This system has several benefits: (a) it can provide a database server in each patient's home; (b) its high extendibility and flexibility facilitate adaptation to a patient's needs; and (c) it allows patients to keep their own data, thus protecting the privacy of personal information. To clarify the capabilities and reliability of the system, we applied it to 8 healthy young volunteers during states of physical and mental work. This system successfully detected clear ECGs and femoral artery pulse waves to calculate important bioinformation, including heart rate, pulse wave velocity, and the power spectral density of spontaneous beat-to-beat oscillations in the R-R interval. In this study, we proposed the way to provide an assessment of the physical and mental condition of the subject using analysis of the bio-information with respect to the physical and mental workloads. The present study provides useful knowledge for the development of a wearable computer designed to monitor the physical and mental conditions of older persons and patients.

Original languageEnglish
Pages (from-to)939-945
Number of pages7
JournalTelemedicine and e-Health
Issue number9
Publication statusPublished - 2008 Nov 1


  • Home health monitoring
  • Telecommunications
  • Telehealth

ASJC Scopus subject areas

  • Health Informatics
  • Health Information Management


Dive into the research topics of 'Development of a wearable system module for monitoring physical and mental workload'. Together they form a unique fingerprint.

Cite this