Key result
Under optimum conditions, the mouse extensor digitorum longus muscle produced a maximum mean power output of 107 W kg-1 at 10 Hz, compared to 34 W kg-1 at 5 Hz for the soleus muscle.
Population
Mouse soleus and extensor digitorum longus (EDL) muscles
Comparison
Work loop technique, video analysis, and in vivo… vs Soleus (slow) versus EDL (fast) muscles
Design
Preclinical
Authors
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No direct clinical application from mouse data; leaves open human translation while extending fiber-type physiology.
Absolute Event Rate: 107% vs 34%
Mouse EDL and soleus muscles operate in vivo at cycle frequencies and sarcomere lengths that yield near-maximal power output in vitro.
James et al. (1995) studied this question. Extensor digitorum longus (EDL) muscle vs. Soleus muscle was evaluated on Maximum mean power output (W kg-1). Under optimum conditions, the mouse extensor digitorum longus muscle produced a maximum mean power output of 107 W kg-1 at 10 Hz, compared to 34 W kg-1 at 5 Hz for the soleus muscle.
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