Ventilatory responses to CO2 rebreathing at rest and during exercise in untrained subjects and athletes.
Ventilatory responses to CO2 rebreathing at rest and during exercise in untrained subjects and athletes.
复制标题
未经训练的受试者和运动员在休息和运动期间对二氧化碳再呼吸的通气反应。
DOI：
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发表时间：
1976
期刊：
影响因子：
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通讯作者：
Y. Honda
中科院分区：
文献类型：
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作者：
M. Miyamura;T. Yamashina;Y. Honda
用重复呼吸法研究了10名马拉松运动员和14名非训练者在休息和运动时对二氧化碳的换气反应。由VE-PACO_2曲线斜率测定，未经训练的受试者和运动员在安静时的平均反应分别为1.86和1.12升/分-毫米汞柱，差异有统计学意义(P<0.05)。对照组VE-PACO2斜率由1.86降至0.62，运动员组由1.12降至0.62(P<0.01)。运动员在安静和运动中获得的平均斜率约为非训练者的50%-60%(p<0.05)。运动员和未训练组之间VE-PACO2曲线的差异可能是由于呼吸中心的兴奋性降低和/或输入信号减少所致。
Ventilatory responses to CO2 during rest and exercise were studied in 10 marathon runners and 14 untrained subjects by the rebreathing method. The average responses of the untrained subjects and athletes at rest as meausred by the slope of VE-PACO2 curves were 1.86 and 1.12 liters/min-mmHg, the difference being statistically significant (p less than 0.05). During exercise the slope of VE-PACO2 decreased from 1.86 to 0.62 in the controls, and from 1.12 to 0.62 in the athletes (p less than 0.01). The mean slope obtained in the athletes, at rest and during exercise, was about 50-60% of that in untrained subjects (p less than 0.05). The difference in the VE-PACO2 curves between the athlete and the untrained group may be due to a reduced exitability of the respiratory center and/or by a reduced input signal.