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Fig. 4. Forces exerted at the proximal and distal transducers by rat GM and PL muscles connected to extramuscular connective tissue, within a dissected compartment after distal PL-tenotomy. Note that after distal PL-tenotomy, epitendinous tissues connected to the calcaneal bone were left intact. (A) A comparison of proximal active force exerted at the GM tendon (closed symbols) and distal active force exerted at the calcaneal bone (open symbols). (B) A comparison of proximal passive force exerted at the GM tendon (closed symbols) and distal active force exerted at the calcaneal bone (open symbols). Note that, despite PL-tenotomy, distal active force was higher at long muscle lengths and lower at short muscle lengths than proximal active force. Distal passive force was higher than proximal passive force. Muscle-tendon complex length (Lm+t) is expressed as deviation from optimum length (L0). Force is shown as mean ± S.E.M.





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