<Originals>Effects of Continuous and Intermittent High-intensity Exercise in Simulated Hypobaric Hypoxia on Anaerobic Capacity and Power

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概要

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• FUJIMAKI, T. and ASANO, K., Effects of Continuous and Intermittent High-intensity Exercise in Simulated Hypobaric Hypoxia on Anaerobic Capacity and Power. Adv. Exerc. Sports Physiol., Vol.7, No.3 pp.73-79, 2001. The purpose of the present study was to investigate the effect of reduced oxygen availability on the anaerobic capacity and power when absolutely the same work was performed in hypoxia as in normoxia. Fourteen healthy male students, the members of a football team, volunteered for this study. Two graded high intensity exercises of continuous exercise (CE) and intermittent exercise (IE) were involved in this study. The CE was a modified maximal accumulated oxygen deficit (MAOD) test, and the IE was maximal anaerobic cycle test (MACT). The exercises were performed under normoxic(N) and hypoxic(H) conditions. The MAOD was defined as the difference between the estimated oxygen demands and total VO2 during exercise. The maximal power (Pmax) exerted at a finak stage in the IE was used as a measure of anaerobic power. The VO2 during exercise and rest period in the IE were also measured. In addition, the subjects were tested with a 30 sec Wingate anaerobic test (WT) in normoxia. The subjects were exhaused in the CE within the range of 80-160 sec (mean 132.5 sec) in N and 80-140 sec (mean 110.8 sec) in H. the VO2 during CE in H was lower than that in N, and caused the reduction of the exhaustion time. Although the exhaustion time was shorter, the MAOD, the Pmax was not lowered in hypoxia, therefore, the anaeribic capacity and power were not affected by the reduced oxygen availability. Aithough the VO2 during exercise was not lowered in the IE, the VO2 during rest periods was significantly lower in H, suggesting that the resynthesis of depleted phosphocreatin during rest periods was less in hypoxia.

• 日本運動生理学会の論文

著者

• ASANO Katsumi

  Institute of Sports and Science, University of Tsukuba

• Asano Katsumi

  Institute Of Health And Sport Sciences University Of Tsukuba

• Fujimaki Toshiaki

  Yokohama Sports Medical Center

• Asano Katsumi

  Institute of Health and Sport Sciences,University of Tsukuba

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• Serum Testosterone Responses to Continuous and Intermittent Exercise Training at Simulated Altitude of 4,000m
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• Effects of High-intensity Intermittent Training at Simulated Altitude on Aerobic and Anaerobic Capacities and Response to Supramaximal Exercise
• Effects of Continuous and Intermittent High-intensity Exercise in Simulated Hypobaric Hypoxia on Anaerobic Capacity and Power
• Additional Effects of Endurance Training Under Hypobaric Hypoxia on Oxygen Transport and Muscle Oxidative Capacities in Rats
• Metabolic Effects of Hyperbaric Oxygen on Muscle Tear in the Hind Limb of Rats
• Effect of Endurance Training under Hypoxic Condition on Oxidative Enzyme Activity in Rat Skeletal Muscle

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