Combined endurance/resistance training early on, after a first myocardial infarction, does not induce negative left ventricular remodelling

Schmid, Jean-Paul; Anderegg, Matthias; Romanens, Michel; Morger, Cyrill; Noveanu, Markus; Hellige, Gerrit; Saner, Hugo (2008). Combined endurance/resistance training early on, after a first myocardial infarction, does not induce negative left ventricular remodelling. European journal of cardiovascular prevention & rehabilitation, 15(3), pp. 341-6. Los Angeles, Calif.: Sage 10.1097/HJR.0b013e3282f5dbf5

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BACKGROUND: Resistance training (RT) is safe and practicable in low-risk populations with coronary artery disease. In patients with left ventricular (LV) dysfunction after an acute ischaemic event, few data exist about the impact of RT on LV remodelling. METHODS: In this prospective, randomized, controlled study, 38 patients, after a first myocardial infarction and a maximum ejection fraction (EF) of 45%, were assigned either to combined endurance training (ET)/RT (n=17; 15 men; 54.7+/-9.4 years and EF: 40.3+/-4.5%) or to ET alone (n=21; 17 men; 57.0+/-9.6 years and EF: 41.9+/-4.9%) for 12 weeks. ET was effectuated at an intensity of 70-85% of peak heart rate; RT, between 40 and 60% of the one-repetition maximum. LV remodelling was assessed by MRI. RESULTS: No statistically significant differences between the groups in the changes of end-diastolic volume (P=0.914), LV mass (P=0.885) and EF (P=0.763) were observed. Over 1 year, the end-diastolic volume increased from 206+/-41 to 210+/-48 ml (P=0.379) vs. 183+/-44 to 186+/-52 ml (P=0.586); LV mass from 149+/-28 to 155+/-31 g (P=0.408) vs. 144+/-36 to 149+/-42 g (P=0.227) and EF from 49.1+/-12.3 to 49.3+/-12.0% (P=0.959) vs. 51.5+/-13.1 to 54.1% (P=0.463), in the ET/RT and ET groups, respectively. Peak VO2 and muscle strength increased significantly in both groups, but no difference between the groups was noticed. CONCLUSION: RT with an intensity of up to 60% of the one-repetition maximum, after an acute myocardial infarction, does not lead to a more pronounced LV dilatation than ET alone. A combined ET/RT, or ET alone, for 3 months can both increase the peak VO2 and muscle strength significantly.

Item Type:	Journal Article (Original Article)
Division/Institute:	04 Faculty of Medicine > Department of Cardiovascular Disorders (DHGE) > Clinic of Cardiology
UniBE Contributor:	Schmid-Walker, Jean-Paul, Anderegg, Matthias, Saner, Hugo Ernst
ISSN:	1741-8267
ISBN:	18525391
Publisher:	Sage
Language:	English
Submitter:	Factscience Import
Date Deposited:	04 Oct 2013 15:02
Last Modified:	02 Mar 2023 23:22
Publisher DOI:	10.1097/HJR.0b013e3282f5dbf5
PubMed ID:	18525391
Web of Science ID:	000257185200016
URI:	https://boris.unibe.ch/id/eprint/26924 (FactScience: 99046)