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Table 2 Mean values of peak and time to peak twist and untwist-rate at the epicardial level

From: Cardiovascular magnetic resonance myocardial feature tracking for the measurement of myocardial twist and untwist at rest and during dobutamine stress in healthy volunteers

Mean ± Standard Deviation Peak twist epicardial (degrees) Time to peak
twist (ms)
Peak untwist-rate epicardial (degrees/s) Time to peak
untwist-rate (ms)
Volunteers at rest 12 ± 9 325 ± 106 -119 ± 57 449 ± 91
Volunteers at 10 mcg of dobutamine 17 ± 8
(p = 0.09)
257 ± 65
(p = 0.03)
-157 ± 78
(p = 0.2)
366 ± 78
(p = 0.03)
Volunteers at 20 mcg of dobutamine 18 ± 11
(p = 0.14)
204 ± 72
(p = 0.08)
-226 ± 110
(p = 0.03)
277 ± 82
(p = 0.03)