Else P L, Bennett A F
J Exp Biol. 1987 Mar;128:219-33. doi: 10.1242/jeb.128.1.219.
The thermal dependence of locomotor performance and in vitro muscle mechanical properties were studied after acclimation at 10 degrees and 20 degrees C in the salamander Ambystoma tigrinum nebulosum Hallowell. Performance measurements included burst and endurance capacities on land and in water. No significant differences in locomotor performance or muscle contractile properties were found between acclimation groups. Locomotor performance had only a slight thermal dependence, with Q10 values of 0.99-1.36 for running and swimming burst capacities (i.e. maximum speed and leg/tail cycling frequency). Running and swimming endurance capacities had thermal ratios of 1.58-1.66. Thermal dependence of muscle contractile rates was higher than that of locomotor performance: rates of force development for both isometric twitch and tetanus and maximal shortening velocity had Q10 values of 1.89-2.01. Maximal power output was also thermally dependent (Q10 = 2.33) and occurred at 38% of maximal (tetanic) force output. Force-generating capacities in isometric twitch and tetanus were relatively temperature-independent.
在10摄氏度和20摄氏度环境下对虎纹钝口螈（Ambystoma tigrinum nebulosum Hallowell）进行驯化后，研究了其运动性能的热依赖性和体外肌肉力学特性。性能测量包括在陆地和水中的爆发能力和耐力。驯化组之间在运动性能或肌肉收缩特性方面未发现显著差异。运动性能只有轻微的热依赖性，跑步和游泳爆发能力（即最大速度和腿部/尾部循环频率）的Q10值为0.99 - 1.36。跑步和游泳耐力的热比为1.58 - 1.66。肌肉收缩速率的热依赖性高于运动性能：等长单收缩和强直收缩的力量发展速率以及最大缩短速度的Q10值为1.89 - 2.01。最大功率输出也具有热依赖性（Q10 = 2.33），且出现在最大（强直）力输出的38%时。等长单收缩和强直收缩中的力量产生能力相对与温度无关。
