Journal of Biomedical Engineering Research (대한의용생체공학회:의공학회지)

The Korean Society of Medical and Biological Engineering (대한의용생체공학회)
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Analysis of the Impact of Chair Tilt Function on Users' Biometric Signals and Comfort

의자의 틸트 기능이 사용자의 생체 신호 및 안락도에 미치는 영향 분석

  • Seulki Kyeong (Department of Mechanical Engineering, Hannam University)
  • 경슬기 (한남대학교 기계공학과)
  • Received : 2024.03.21
  • Accepted : 2024.04.05
  • Published : 2024.04.30
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Abstract

This research investigates the influence of chair tilt functionality on biometric signals and user comfort, addressing the ergonomic challenges posed by modern sedentary lifestyles. Through an experimental study involving eight male participants, the impact of chair tilt on electromyography (EMG), heart rate, metabolic rate, pressure distribution, and distance between the lumbar spine and the lumbar support part of the chair was measured across different seating postures. The study utilized chairs with both synchronous and non-synchronous tilt mechanisms to explore how adjustments in chair design affect user comfort and physiological responses during prolonged sitting. Key findings suggest that chair tilt functionality can significantly reduce muscle activity and energy expenditure, enhancing user comfort and potentially mitigating health risks associated with prolonged sedentary behavior. Notably, the study revealed a preference among participants for chairs that aligned the rotational center of the tilt with the hip joint, highlighting the importance of this ergonomic feature in enhancing user comfort. Additionally, the research proposes a novel methodology for assessing seating comfort through the analysis of both biometric and physical signals, providing valuable insights for the development of ergonomic chair designs focused on user health and comfort.

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Acknowledgement

이 논문은 2022학년도 한남대학교 학술연구비 지원에 의하여 연구되었음.

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