Global and regional left ventricular circumferential strain during incremental cycling and isometric knee extension exercise

Beaumont, Alexander; Sculthorpe, Nicholas; Hough, John; Unnithan, Viswanath B.; Richards, Joanna

doi:10.1111/echo.13894

Cited by 1 publication

(2 citation statements)

References 32 publications

(95 reference statements)

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“…During incremental dynamic aerobic exercise, studies reported a progressive increase in GCS due to increased apical circumferential strain (ACS) with trivial effects on basal circumferential strain (BCS). 26 In contrast, GCS decreased during the isometric exercise with no effect on ACS and decreased BCS from rest. 26 Therefore, exercise modality plays some role in GCS responses, and we did not have a granular breakdown of PA type.…”

Section: Discussionmentioning

confidence: 91%

“…26 In contrast, GCS decreased during the isometric exercise with no effect on ACS and decreased BCS from rest. 26 Therefore, exercise modality plays some role in GCS responses, and we did not have a granular breakdown of PA type. Further studies of global and region-specific circumferential strain during incremental exercise are lacking at present, and GCS responses during dynamic and static modalities remain incompletely understood.…”

Section: Discussionmentioning

confidence: 91%

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Associations between physical activity, sedentary behaviour and left ventricular structure and function from the Echocardiographic Study of Latinos (ECHO-SOL)

et al. 2021

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ObjectiveThe cross-sectional association between accelerometer-measured physical activity (PA), sedentary behaviour (SB) and cardiac structure and function is less well described. This study’s primary aim was to compare echocardiographic measures of cardiac structure and function with accelerometer measured PA and SB.MethodsParticipants included 1206 self-identified Hispanic/Latino men and women, age 45–74 years, from the Echocardiographic Study of Latinos. Standard echocardiographic measures included M-mode, two-dimensional, spectral, tissue Doppler and myocardial strain. Participants wore an Actical accelerometer at the hip for 1 week.ResultsThe mean±SE age for the cohort was 56±0.4 years, 57% were women. Average moderate to vigorous PA (MVPA) was 21±1.1 min/day, light PA was 217±4.2 min/day and SB was 737±8.1 min/day. Both higher levels of light PA and MVPA (min/day) were associated with lower left ventricular (LV) mass index (LVMI)/end-diastolic volume and a lower E/e′ ratio. Higher levels of MVPA (min/day) were associated with better right ventricular systolic function. Higher levels of SB were associated with increased LVMI. In a multivariable linear regression model adjusted for demographics and cardiovascular disease modifiable factors, every 10 additional min/day of light PA was associated with a 0.03 mL/m2 increase in left atrial volume index (LAVI) (p<0.01) and a 0.004 cm increase in tricuspid annular plane systolic excursion (p<0.01); every 10 additional min/day of MVPA was associated with a 0.18 mL/m2 increase in LAVI (p<0.01) and a 0.24% improvement in global circumferential strain (p<0.01).ConclusionsOur findings highlight the potential positive association between the MVPA and light PA on cardiac structure and function.

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Section: Discussionmentioning

confidence: 91%

Section: Discussionmentioning

confidence: 91%