Figure 1

ECG analysis—evolution of intervals and waves ratio with age. On all the graphs, the evolution of GRMD dogs’ values are represented by red dots, and healthy dogs’ values by blue dots. A line indicates the median of each population at each timepoint. Asterisks symbolize a significant difference between GRMD and healthy dogs at a given timepoint (post-hoc Fisher LSD test p < 0.05). (A) Heart rate (HR) (B) QTcV (Van de Water’s correction) interval (C) PR interval.