自己慣習的な運動強度での心血管系の応答

概要

論文の詳細を見る
To examine the cardiovascular response to exercise intensities, 102 volunteers (aged 16-76 years) performed a treadmill test. The speed and slope of the treadmill were adjusted for each subject according to the subjective intensity attained during their habitual sports club activities. Treadmill exercise tests were performed while monitoring electrocardiogram (ECG), blood pressure and arterial oxygen saturation (SaO_2). HR was increased markedly to 86±11% of predicted maximal HR during exercise, while the rate of perceived exertion was modest (14.0±1.6). The systolic blood pressure (SBP) was also increased significantly from 139.7±21.1 mmHg to 188.2±30.3 mmHg, hence SBP of 200 mmHg or higher was observed in 31 subjects. Abnormal ECGs were recorded in 50% of the subjects. In addition, SaO_2 decreased significantly from 97.9±0.8% to 95.5±3.1%. SBP during exercise was correlated with SBP at rest and Body Mass Index (BMI). However, there was no correlation between SBP during exercise and age. The usual work out intensity may be too high in some subjects who regularly exercise in a sports club, since their exercise level causes elevated SBP and HR and low SaO_2. According to these results, exercise intensity should be decreased for subjects with higher SBP at rest and/or with higher BMI. No limitations related to age seem necessary.
日本運動生理学会の論文
1996-08-31