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Journal of the Korean Academy of Rehabilitation Medicine 1996;20(1):6.
Energy Cost during Walking and Usefulness of Physiological Cost Index in Hemiplegic Patients
Bong-Ok Kim, M.D., Ju-Hyoung Hong, M.D. , Seung-Ho Yune, M.D.
Department of Rehabilitation Medicine, Chungnam National University College of Medicine
편마비환자에서 보행중 에너지 소모와 Physiological Cost Index의 유용성
김봉옥, 홍주형, 윤승호
충남대학교 의과대학 재활의학교실

The purpose of this study was to investigate usefulness of physiological cost index(PCI) with correlation to the heart rate, walking speed, O2 rate and O2 cost responses of individuals with hemiplegia to resting and comfortable walking. We measured the physiological energy expenditure using the portable oxygen consumption monitor(K2, COSMED, Rome, Italy).

Twenty hemiplegic patients and twenty able-bodied control subjects participated.
showed that the hemiplegic group required significantly high O2 cost and PCI during comfortable walking. In the hemiplegic group, there was statistically positive correlation between O2 rate and heart rate, O2 cost and PCI and negative correlation between walking speed and PCI, and O2 cost and walking speed. In the control group, there was statistically positive correlation between O2 rate and heart rate, O2 rate and PCI, and heart rate and PCI. According to the above results, it could be concluded that hemiplegic group required higher energy consumption during comfortable walking compared to the control group, and PCI is an easy and comfortable index to estimate energy expenditure during ambulation.

Key Words: Energy cost, Physiological cost index, Hemiplegia, Walking


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