ECG measurements in sedated α-MHC-LacZ-(CTG)₄₀₀ mice.

Parameter values represent mean±standard deviation; Matching symbols (*,#) denote significant differences between groups in post hoc testing for that parameter; LacZ, α-MHC-LacZ-(CTG)0; TGhigh, α-MHC-LacZ-(CTG)400TGhigh; TGlow, α-MHC-LacZ-(CTG)400TGlow; SCL, sinus-cycle length; HR, heart rate; PR, atrial and A–V nodal conduction time; QRS, ventricular depolarization time; QT, surrogate of action potential duration; QTc, corrected surrogate of action potential duration; ms, milliseconds, bpm, beats per minute.”