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Fig. 4. (A) Length/force relationship based on data for rat muscle
(Woledge et al., 1985). The
bold line shows the relative length range over which a muscle should operate
to maximise work and power output for a strain of 0.23. (B) Optimum relative
length (Lm/L0) about which a muscle
should operate to maximise work and power for a range of strains. An optimum
Lm/L0 of 0.95 should be used for a
strain of 0.23. Note that the divergence of the line at strains shorter than
0.06 represents the range of relative optimum lengths (Lm;
see text) over which the muscle can still operate on the plateau of the
length/force relationship.