Age-related differences in twist may be mitigated with exercise training, although this remains inconclusive. Moreover, temporal left ventricular (LV) systolic twist mechanics, including early-systolic (twist
early), and beyond peak twist (twist
peak) alone, have not been considered. Therefore, further insights are
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Age-related differences in twist may be mitigated with exercise training, although this remains inconclusive. Moreover, temporal left ventricular (LV) systolic twist mechanics, including early-systolic (twist
early), and beyond peak twist (twist
peak) alone, have not been considered. Therefore, further insights are required to ascertain the influence of age and training status on twist mechanics across systole. Forty males were included and allocated into 1 of 4 groups based on age and training status: young recreationally active (Y
RA, n = 9; 28 ± 5 years), old recreationally active (O
RA, n = 10; 68 ± 6 years), young trained (Y
T, n = 10; 27 ± 6 years), and old trained (O
T, n = 11, 64 ± 4 years) groups. Two-dimensional speckle-tracking echocardiography was performed to determine LV twist mechanics, including twist
early, twist
peak, and total twist (twist
total), by considering the nadir on the twist time-curve during early systole. Twist
total was calculated by subtracting twist
early from their peak values. LV twist
peak was higher in older than younger men (
p = 0.036), while twist
peak was lower in the trained than recreationally-active (
p = 0.004). Twist
peak is underestimated compared with twist
total (
p < 0.001), and when early-systolic mechanics were considered, to calculate twist
total, the age effect (
p = 0.186) was dampened. LV twist was higher in older than younger age, with lower twist in exercise-trained than recreationally-active males. Twist
peak is underestimated when twist
early is not considered, with novel observations demonstrating that the age effect was dampened when considering twist
early. These findings elucidated a smaller age effect when early phases of systole are considered, while lower LV systolic mechanics were observed in older aged trained than recreationally-active males.
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