Ranatunga K W
Department of Physiology, The School of Medical Sciences, University of Bristol, UK.
Exp Physiol. 1998 May;83(3):371-6. doi: 10.1113/expphysiol.1998.sp004120.
Force-velocity data at different temperatures (range, 10-35 degrees C) from intact fibre bundles are analysed to determine the temperature dependence of the maximal mechanical power output of fast and slow rat muscles. At 35 degrees C, the maximal mechanical power was approximately 250 kW m(-3) (=250 microW mm(-3)) in fast (probably an underestimate) and approximately 100 kW m(-3) in slow muscle. Within the more physiological temperature range (25-35 degrees C), the temperature coefficient (Q10) of maximum power was 2-2.5. In both muscles, the maximal power at 10 degrees C was only about 3-5% of that at 35 degrees C, the decrease being particularly pronounced at temperatures below 20 degrees C (Q10 of 5-7).
分析来自完整纤维束在不同温度(范围为10 - 35摄氏度)下的力 - 速度数据,以确定快速和慢速大鼠肌肉最大机械功率输出的温度依赖性。在35摄氏度时,快速肌肉的最大机械功率约为250 kW m(-3)(= 250微瓦mm(-3))(可能是低估),慢速肌肉约为100 kW m(-3)。在更接近生理的温度范围(25 - 35摄氏度)内,最大功率的温度系数(Q10)为2 - 2.5。在两种肌肉中,10摄氏度时的最大功率仅为35摄氏度时的约3 - 5%,在低于20摄氏度的温度下下降尤为明显(Q10为5 - 7)。