Fig. 2.
Representative 2-D image sequence during exercise for LV circumferential strain (Sc). A: rest at HR = 60 bpm; B: 0 W at HR = 72 bpm; C: 50 W at HR = 101 bpm; D: 100 W at HR = 153 bpm; E: 2-min recovery at HR = 90 bpm. GS = global LV Sc.
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