Oxygen uptake, heart rate, and contraction frequencies of slow oxidative (SO) and fast glycolytic (FG) muscle, were measured simultaneously in gilthead seabream Sparus aurata submitted to stepwise increases in current speed in a swimming respirometer. Variation in oxygen uptake was closely related to variation in heart rate, over initial steps these rose in concert with an increase in contraction frequency of SO muscle. There was an asymptote in oxygen uptake and heart rate at high speeds, that reflected a transition from exclusive use of aerobic SO muscle to a combination of SO and anaerobic FG muscle, and which preceded fatigue. This article is protected by copyright. All rights reserved.

中文翻译：

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金头鲷 Sparus aurata 在临界游泳速度协议期间的摄氧量、心率和运动肌肉活动

在游泳呼吸计中逐步增加电流速度的金头鲷 Sparus aurata 中，同时测量了慢氧化 (SO) 和快速糖酵解 (FG) 肌肉的氧气摄取、心率和收缩频率。摄氧量的变化与心率的变化密切相关，在初始步骤中，这些变化与 SO 肌肉收缩频率的增加一致。高速下的摄氧量和心率有渐近线，这反映了从只使用有氧 SO 肌肉到结合 SO 和无氧 FG 肌肉的过渡，并且在疲劳之前。本文受版权保护。版权所有。