| Usefulness of the Oxygen Uptake Efficiency Slope in the Evaluation of Cardiorespiratory Fitness of the Stroke Patients. |
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Cheon, Yu Jeong , Kang, Eun Kyoung , Kim, Young Hee , Lim, Min Jeong |
1Department of Rehabilitation Medicine, Seoul Veterans Hospital, Korea. olivace114@freechal.com
2Department of Rehabilitation Medicine, Seoul National University Bundang Hospital, Korea. |
| 뇌졸중 환자의 심폐기능 평가에서 산소섭취 효율 기울기의 유용성 |
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천유정, 강은경1, 김영희, 임민정 |
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서울 보훈병원 재활의학과, 1분당서울대학교병원 재활의학과 |
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| Abstract |
Objective
To investigate the usefulness of the oxygen uptake efficiency slope (OUES) in the evaluation of cardiorespiratory fitness of the stroke patients.
Method
25 stroke patients who could walk independently were included in this syudy. The symptom-limited graded treadmill test was performed to assess cardiovascular fitness. During the test, minute ventilation (VE), oxygen consumption (VO2), carbon dioxide production (VCO2), respiratory exchange ratio (RER) and anaerobic threshold (AT) were measured through respiratory gas analysis. A linear relationship was established between the oxygen consumption and the logarithmic transformation of minute ventilation. From this linear relationship, we obtained a slope that represented the OUES. OUES values were obtained from data corresponding to 75% (OUES75), 90% (OUES90) and 100% (OUES100) of the exercise duration.
Results
The differences among OUES75, OUES90 and OUES100 groups were not statistically significant and these three groups were highly correlated to each other. Maximal oxygen consumption (VO2max) was positively correlated with OUES75 (r=0.723), OUES90 (r=0.762), OUES100 (r=0.809) and AT (r=0.696), respectively (p＜0.01).
Conclusion
OUES is considered to be the valuable submaximal index to evaluate the cardiorespiratory fitness of stroke patients who can not reach maximal exercise. (J Korean Acad Rehab Med 2007; 31: 423-426) |
| Key Words:
Oxygen uptake efficiency slope, Stroke, Cardiorespiratory fitness, Submaximal index, Submaximal exercise test |
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