Cardiorespiratory and Hormonal Responses during Prolonged Exercise in Obese Men

DOI HANDLE Web Site Open Access

Bibliographic Information

Other Title
  • 肥満者の長時間運動時における呼吸循環系機能とホルモン動態
  • ヒマンシャノチョウジカンウンドウジニオケルコキュウジュンカンケイキノウトホルモンドウタイ
  • ヒマンシャ ノ チョウジカン ウンドウジ ニ オケル コキュウ ジュンカンケイ

Search this article

Abstract

Cardiorespiratory and hormonal responses to prolonged (60min) bicycle exercise requiring 44-62% of maximum oxygen uptake were studied in six obese men, 26-56 years of age. Heart rates and oxygen uptake were monitored throughout the 60-min exercise. Blood was sampled before, during (10-min intervals) and immediately after the exercise. Oxygen demands were relatively constant at 44-62% of Vo2 max, while heart rates showed a steady increase throughout the exercise. The exercise respiratory exchange ratios showed a gradual decline after the early minutes of exercise. Blood lactate concentrations peaked by the 20th min of exercise and decreased thereafter. Blood sugar showed no marked change. At 44-62% of Vo2 max, serum FFA levels increased during exercise, whereas immunoreactive insulin levels fell consistently during exercise. Plasma catecholamine levels during exercise were significantly elevated above resting values. A significant positive correlation was obtained between the increment above resting levels of plasma adrenaline and that of FFA only after the 30th min of exercise. Plasma growth hormone levels were significantly elevated above resting levels after 60 min of exercise. It was concluded that. the turnover rate of FFA is considerably increased during prolonged exercise at 44-62% of subject's maximal oxygen uptake, in addition to FFA was regulated circulating plasma adrenaline concentrations. (Journal of Health Science, Kyushu University, 9: 97-107, 1987)

Journal

  • 健康科学

    健康科学 9 97-107, 1987-03-28

    Institute of Health Science,Kyushu University

Details 詳細情報について

Report a problem

Back to top