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KMID : 0361420090330030290
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Journal of Korean Academy of Rehabilitation Medicine
2009 Volume.33 No. 3 p.290 ~ p.296
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Selection of Aerobic Exercise Intensity Using Heart Rate Reserve in Stroke Patients
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Kim Eun-Joo
Kim Hong-Chae
Kim Wan-Ho
Song Won-Woo
Yang Ho-Cheol
Kim Jong-Hoon
Lee Sook-Hee
Lee Yong-Seok
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Abstract
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Objective: To determine the intensity of aerobic exercise in stroke patients using heart rate reserve (HRR) by comparing maximal oxygen consumption (V ˙ O2max) and V ˙ O2 at % HRR in maximal exercise test of treadmill, arm ergometer and bicycle ergometer.
Method: Twenty nine stroke patients who could walk independently were included. Maximal exercise test using
treadmill, arm ergometer and bicycle ergometer was performed. Heart rate, rating of perceived exertion, minute ventilation, oxygen consumption and respiratory exchange ratio were measured through respiratory gas analysis. When the standard criteria for maximal oxygen consumption (V ˙ O2max) was achieved, each test was terminated. We compared the measured V ˙ O2max with the V ˙ O2 at % heart rate reserve (HRR) and figured out the statistically significant % HRR point.
Results: Twenty-four (82.7%), twenty-four (82.7%) and twenty-five (86.2%) patients completed maximal exercise
test using treadmill, arm ergometer and bicycle ergometer. Most patients who completed maximal exercise test satisfied
the V ˙ O2max criteria with V ˙ O2 plateau at the end of the exercise test (41.3∼48.2%) or RER＞1.0 (79.3∼82.7%) or
peak HR＞age-predicted maximal heart rate (APMHR)-10 or peak HR＞70% {208?(0.7×age)} when they took β- blockers (6.8∼13.7%). The differences between measured V ˙ O2max and V ˙ O2 above 60% HRR at treadmill test, 65% HRR at arm ergometer test, 65% HRR at bicycle ergometer test were not statistically significant (p＞0.05).
Conclusion: Exercise above 60% HRR at treadmill test, 65% HRR at arm and bicycle ergometer test can be useful
as aerobic exercise intensity in stroke patients.
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KEYWORD
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Stroke, Exercise test, Heart rate reserve
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