Figure 1. Force-Ca²⁺ relationships of ischemia – reperfused fibers.

(A) Force per cross-sectional area versus Ca²⁺ concentration for perfused (•), ischemic (▵) and ischemia-reperfused (□) fibers versus control conditions. (B) Absolute force per cross-sectional area versus Ca²⁺concentration for perfused, ischemic and ischemia – reperfused fibers in the presence of 5 mM added Pi. Data plotted are average ± S.E.M., and the averaged data are fit by the Hill equation for illustrative purposes. Accumulated data from all fibers are presented in Table 1.