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Applicability of exercise test targeted anaerobic threshold in clinical area Kwangchol Chang 1 , Makoto Akaike 1 , Kazuo Thuyuki 1 , Kyosuke Ukai 2 , Hiroki Hase 3 , Kunio Ebine 3 1Odawara Cardio-vascular Hospital 2Department of Cardiology, National Kanagawa Hospital 3Section of ICU, Ohashi Hospital, Toho University pp.503-509
Published Date 1984/5/15
DOI https://doi.org/10.11477/mf.1404204446
  • Abstract
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 The purposes were (1) to evaluate the anaero-bic threshold (AT) in normal sedentary subjects and coronary artery disease patients (CHD pa-tients) ; (2) to investigate the validity of AT detec-tion during exercise test ; (3) to investigate the ap-plicability of the exercise test targeted AT (AT ex-ercise test) in clinical area.

 In normal 39 sedentary subjects and 30 CHD pa-tients, symptom limited exercise test were perform-ed, while respiratory variables were graphically plotted against time on computer display and ATs were determind.

 The correlation between VO2max and VO2 at AT, between HRmax and HR at AT were signifi-cant (r=0.730, r=0.558). These relationship could be used for predictive purposes. The correlation be-tween measured VO2max and predicted VO2max, measured HRmax and predicted HRmax were significant (r=0.924, r=0.724). Since exercise test targeted AT is detectable AT, and predictable VO2max and HRmax without significant degree of metabolic and cardio-vascular strain, it is useful for the subjects having no indication of maximal exercise test. In CHD patients with AT, the average value of AT was 15.75 ml/kg/min. of VO2 (4.5 METs). In CHD patients without AT, the average value of VO2max was 13.87 ml/kg/min. (3.96 METs). Since AT exercise test target the AT of 4.5 METs, it seemed useful for discharge graded ex-ercise test performed at the end of early cardiac rehabilitation (phase 1).


Copyright © 1984, Igaku-Shoin Ltd. All rights reserved.

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電子版ISSN 1882-1200 印刷版ISSN 0452-3458 医学書院

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