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段階的運動負荷中及び回復期における血中カテコールアミン,血清カリウム,脂質及び血糖の動態

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概要 Heart rate, blood pressure, lactate, triglyceride (TG), free fatty acid (FFA), blood sugar (BS), serum electrolytes (Na+, k+), adrenaline (AD), noradrenaline (NA), cyclic AMP (CAMP), and VO2max were d...etermined during graded exercise and the postexercise period by bicycle ergometer to investigate the correlation of exercise and catecholamine, with special reference to the effect of catecholamine on the hormonal, neuronal and metabolic changes. The results were as follows : 1) The AD and NA levels were increased slowly up to moderate work load. Thereafter the both levels were rapidly increased by heavy exercise, reaching in the maximal level during the early postexercise period. This high levels of plasma AD and NA were decreased rapidly with the time constant (ι≒1min), during 14 min after exercise. 2) In contrast to the responses of catecholamine to exercise and recovery, plasma CAMP levels were increased more slowly during exercise and were decreased during recovery. The peak level of CAMP was shown between 2 and 4 min during the postexercise period. 3) Serum potassium was increased gradually while the graded exercise was performed, but was steeply decreased immediately after exercise, showing rebound phenomenon. 4) BS was slightly decreased during exercise, but greatly increased (30 to 60 mg/dl) between 2 and 4 min after exhaustion. 5) FFA was not changed consistently during exercise, but was increased significantly during. the postexercise period. These results suggest that catecholaminesare very important stimulant hormone in regulation of metabolism and cardiovascular system in exercise.続きを見る

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登録日 2009.09.10
更新日 2018.06.12