Figure 5. CK‐2066260 increases force in submaximal contractions without affecting [Ca²⁺]_i in single mouse FDB fibres.

Typical records of [Ca²⁺]_i and force obtained during 30 Hz contractions elicited at 26°C in a single fibre (A) before (black line) and after 5 min exposure to 10 μm CK‐2066260 (red line), and (B) after 10 min washout. Mean data (±SEM) of [Ca²⁺]_i and force during CK‐2066260 exposure (C) and during washout (D). CK‐2066260: black circles, 1 μm (n = 4); open circles, 5 μm (n = 3); red circles, 10 μm (n = 4).