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The purpose of this study was to observe the characteristics of thermoregulatory responses during exercise in young labile hypertensives. A young labile hypertension group (LHG) (n=6) and the control ...(CG) (n=6) group pedalled a Monark bicycle ergometer at the work rate of 600 kpm/min for 20 min in the temperate environment. Tympanic and skin temperatures, heart rate, systolic blood pressure and sweating responses were measured of subjects in both groups during the work. The result is summarized as follows : 1. The mean skin temperature during exercise showed an increased rate in LHG than in CG. 2. The subjects in LHG at rest represented sinus tachycardia in comparison with CG, but no significant difference was observed in the increases of heart rate during exercise in both groups. 3. The increased rate of systolic blood pressure during exercise was higher in CG compared with LHG. 4. The relationship between body temperature (tympanic and mean body temperatures) and heart rate exhibited a high correlation coefficient in LHG during exercise and recovery periods. 5. There were no obvious differences between LHG and CG in sweating responses and heat storage during exercise. These results seem to suggest that thermoregulatory responses during exercise in hypertensives are qualitatively different from those in normal subjects, and these will offer interesting insights in a further consideration of exercise therapy in hypertensive.
若年性動搖性高血圧群(LHG)と正常対照群(CG)について,常温環境下で自転車エルゴメーターを用いて,強度600kpm/minの運動負荷を行なった。その結果,次のような知見を得た。1.運動時の平均皮膚温の上昇率は,LHGがCGに比し大きい傾向を示した。2.安静時でのLHGはCGに比し頻脈者が多く,運動時の心拍数の増加率は,両群間に差がなかった。3.運動時の収縮血圧の上昇率は,CGがLHGに比し大きかった。4.LHGでの運動時ならびに回復期の心拍数に対する鼓膜温および平均体温との相関は高かった。5.発汗応答および体熱量は,両群間に著明な差がなかった。これらの結果は,高血圧者の運動時の体温調節反応が正常血圧者のそれと異なることを示唆し,また高血圧者の運動療法をするうえで,興味ある知見を提供した。(なお,本研究の要旨は,日本体育学会第33回大会で発表した。)続きを見る
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