Figure 2. Representative sample traces of cardiomyocyte fractional shortening (A) and Fura-2 ratio (D) from sham, HF-inactive and HF-trained rats.

Averaged data of myocyte fractional shortening (B), time to 50% diastolic relaxation (C), Ca²⁺ amplitude (E), SR Ca²⁺ content (F), time to 50% Ca²⁺ decay (G) and diastolic Ca²⁺ (H). All averaged data presented as mean values ± SD. * p<0.05 versus sham sedentary, # p<0.001 versus sham sedentary.