Details
| Originalsprache | Englisch |
|---|---|
| Seiten (von - bis) | 119-124 |
| Seitenumfang | 6 |
| Fachzeitschrift | Annals of Physical and Rehabilitation Medicine |
| Jahrgang | 61 |
| Ausgabenummer | 3 |
| Frühes Online-Datum | 31 Jan. 2018 |
| Publikationsstatus | Veröffentlicht - Mai 2018 |
| Extern publiziert | Ja |
Abstract
Background: Cardiac rehabilitation (CR) exercise training is beneficial after myocardial infarction (MI). Whilst the peripheral adaptations to training are well defined, little is known regarding the effect on left ventricular (LV) remodelling, particularly LV function. Efficient LV ejection and filling is achieved through deformation and rotation of the myocardium in systole and diastole – LV mechanics. The response of LV mechanics to CR exercise training in MI patients is unknown. Methods: In this observational exploratory study, 36 (of 40 enrolled) male, MI patients completed either 10-weeks of twice-weekly gym based cardiovascular exercise at 60–80% VO2peak (n = 18), or a non-exercise control period (n = 18). Cardiopulmonary exercise testing and speckle tracking echocardiography were performed at baseline and 10 weeks. Results: Compared to the non-exercise group, VO2peak improved with CR exercise training (Difference: +4.28 [95% CI: 1.34 to 7.23] ml.kg−1.min−1, P = 0.01). Neither conventional LV structural or functional indices, nor LV global longitudinal strain, significantly changed in either group. In contrast, LV twist and twist velocity decreased in the exercise group and increased in the non-exercise group (Difference: −3.95° [95% CI: −7.92 to 0.03°], P = 0.05 and −19.2°.s−1 [95% CI: −35.9 to −2.7°.s−1], P = 0.02, respectively). Conclusion: In MI patients who completed CR exercise training, LV twist and twist velocity decreased, whereas these parameters increased in patients who did not exercise. These preliminary data may indicate reverse LV functional remodelling and improved functional reserve. The assessment of LV twist may serve as an indicator of the therapeutic benefit of CR exercise training and should be investigated in larger trials.
ASJC Scopus Sachgebiete
- Medizin (insg.)
- Orthopädie und Sportmedizin
- Medizin (insg.)
- Rehabilitation
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in: Annals of Physical and Rehabilitation Medicine, Jahrgang 61, Nr. 3, 05.2018, S. 119-124.
Publikation: Beitrag in Fachzeitschrift › Artikel › Forschung › Peer-Review
}
TY - JOUR
T1 - Effect of exercise training on left ventricular mechanics after acute myocardial infarction
T2 - an exploratory study
AU - McGregor, Gordon
AU - Stöhr, Eric J.
AU - Oxborough, David
AU - Kimani, Peter
AU - Shave, Rob
PY - 2018/5
Y1 - 2018/5
N2 - Background: Cardiac rehabilitation (CR) exercise training is beneficial after myocardial infarction (MI). Whilst the peripheral adaptations to training are well defined, little is known regarding the effect on left ventricular (LV) remodelling, particularly LV function. Efficient LV ejection and filling is achieved through deformation and rotation of the myocardium in systole and diastole – LV mechanics. The response of LV mechanics to CR exercise training in MI patients is unknown. Methods: In this observational exploratory study, 36 (of 40 enrolled) male, MI patients completed either 10-weeks of twice-weekly gym based cardiovascular exercise at 60–80% VO2peak (n = 18), or a non-exercise control period (n = 18). Cardiopulmonary exercise testing and speckle tracking echocardiography were performed at baseline and 10 weeks. Results: Compared to the non-exercise group, VO2peak improved with CR exercise training (Difference: +4.28 [95% CI: 1.34 to 7.23] ml.kg−1.min−1, P = 0.01). Neither conventional LV structural or functional indices, nor LV global longitudinal strain, significantly changed in either group. In contrast, LV twist and twist velocity decreased in the exercise group and increased in the non-exercise group (Difference: −3.95° [95% CI: −7.92 to 0.03°], P = 0.05 and −19.2°.s−1 [95% CI: −35.9 to −2.7°.s−1], P = 0.02, respectively). Conclusion: In MI patients who completed CR exercise training, LV twist and twist velocity decreased, whereas these parameters increased in patients who did not exercise. These preliminary data may indicate reverse LV functional remodelling and improved functional reserve. The assessment of LV twist may serve as an indicator of the therapeutic benefit of CR exercise training and should be investigated in larger trials.
AB - Background: Cardiac rehabilitation (CR) exercise training is beneficial after myocardial infarction (MI). Whilst the peripheral adaptations to training are well defined, little is known regarding the effect on left ventricular (LV) remodelling, particularly LV function. Efficient LV ejection and filling is achieved through deformation and rotation of the myocardium in systole and diastole – LV mechanics. The response of LV mechanics to CR exercise training in MI patients is unknown. Methods: In this observational exploratory study, 36 (of 40 enrolled) male, MI patients completed either 10-weeks of twice-weekly gym based cardiovascular exercise at 60–80% VO2peak (n = 18), or a non-exercise control period (n = 18). Cardiopulmonary exercise testing and speckle tracking echocardiography were performed at baseline and 10 weeks. Results: Compared to the non-exercise group, VO2peak improved with CR exercise training (Difference: +4.28 [95% CI: 1.34 to 7.23] ml.kg−1.min−1, P = 0.01). Neither conventional LV structural or functional indices, nor LV global longitudinal strain, significantly changed in either group. In contrast, LV twist and twist velocity decreased in the exercise group and increased in the non-exercise group (Difference: −3.95° [95% CI: −7.92 to 0.03°], P = 0.05 and −19.2°.s−1 [95% CI: −35.9 to −2.7°.s−1], P = 0.02, respectively). Conclusion: In MI patients who completed CR exercise training, LV twist and twist velocity decreased, whereas these parameters increased in patients who did not exercise. These preliminary data may indicate reverse LV functional remodelling and improved functional reserve. The assessment of LV twist may serve as an indicator of the therapeutic benefit of CR exercise training and should be investigated in larger trials.
KW - Left ventricular remodelling
KW - Left ventricular twist
KW - Longitudinal strain
UR - http://www.scopus.com/inward/record.url?scp=85043473043&partnerID=8YFLogxK
U2 - 10.1016/j.rehab.2018.01.003
DO - 10.1016/j.rehab.2018.01.003
M3 - Article
C2 - 29408714
AN - SCOPUS:85043473043
VL - 61
SP - 119
EP - 124
JO - Annals of Physical and Rehabilitation Medicine
JF - Annals of Physical and Rehabilitation Medicine
SN - 1877-0657
IS - 3
ER -