Key result
Cooling from 35 to 10 degrees C increased the curvature of the force-velocity relation in rat muscles, with slow-twitch muscle shortening velocity being more temperature sensitive than fast-twitch.
Population
Rat fast-twitch (extensor digitorum longus, e.d.l.) and slow-twitch (soleus) muscle preparations in vitro
Design
Preclinical
Authors
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Caution advised before clinical translation of muscle cooling effects; hypothesis-generating for human slow- versus fast-twitch fiber differences.
Cooling increases the curvature of the force-velocity relation and decreases maximum shortening velocity more profoundly in slow-twitch compared to fast-twitch rat muscles.
K. W. Ranatunga (1984) studied Normal physiology (rat muscle force-velocity relation). Temperature variation (cooling from 35 to 10 degrees C) vs. Different temperatures was evaluated on Steady-state force-velocity relation and maximum shortening velocity. Cooling from 35 to 10 degrees C increased the curvature of the force-velocity relation in rat muscles, with slow-twitch muscle shortening velocity being more temperature sensitive than fast-twitch.
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