Bazhenov Iu I, Soodanbekova A, Tkachenko E Ia, Iakimenko M A
Biull Eksp Biol Med. 1978 Mar;85(3):259-60.
The authors studied the working capacity and heat formation of the skeletal muscles during contraction in rats--control and those adapted to hypoxia. The force of contraction, the work and fatigueability of the muscles, as well as elevation of the muscle temperature as a result of contraction were determined under conditions of indirect muscle electrostimulation. Hypoxia adaptation failed to influence the force of muscle contraction and the work performed. However, hypoxia led to reduction of the temperature effect of the muscle contraction per unit of the work performed. This pointed to increase of the efficiency of the muscle work in hypoxia adaptation. Fatigueability of the muscles in "hypoxic" rats was elevated. Changes in the energy of the muscle contraction in hypoxia and cold adaptation were different.
作者研究了正常大鼠以及适应低氧环境的大鼠骨骼肌在收缩过程中的工作能力和产热情况。在间接肌肉电刺激条件下，测定了肌肉收缩力、肌肉的做功及疲劳性，以及收缩导致的肌肉温度升高。低氧适应并未影响肌肉收缩力及所做的功。然而，低氧导致单位功的肌肉收缩温度效应降低。这表明在低氧适应过程中肌肉工作效率提高。“低氧”大鼠的肌肉疲劳性增强。低氧适应和冷适应时肌肉收缩能量的变化不同。
