Fig. 1. Tension–pCa relationships of SOL (soleus) and PL (plantaris) fibers in control (CONT) rats and rats conceived, born and reared in hypergravity (CBR). (A) CONT and CBR T–pCa curves of slow SOL fibers (Ai) and fast PL fibers (Aii). (Bi,ii) Parametric values derived from T–pCa curves of the fibers analyzed in A. pCa_thr, threshold for Ca²⁺ activation; pCa₅₀, pCa at which tension is half maximum; n_H, Hill coefficient. Values are means ± S.E.M. Curves were fitted according to the Hill equation. ^*Significantly different from CONT (P<0.05).