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The right ventricle following ultra-endurance exercise: insights from novel echocardiography and 12-lead electrocardiography.

Abstract：

PURPOSE:There is contradictory evidence related to the impact of ultra-marathon running on right ventricular (RV) structure and function. Consequently, the aims of this study were to: (1) comprehensively assess RV structure and function before and immediately following a 100-mile ultra-marathon in highly trained runners, (2) determine the nature of RV recovery 6 h post-race, and (3) document 12-lead electrocardiogram (ECG) changes post-exercise. METHODS:Echocardiography and 12-lead ECG were assessed in 15 competitors in a repeated measures design before and immediately after completion of the 2013 Western States Endurance Race. A subset of nine was reassessed 6 h into recovery. Standard echocardiography was used to determine RV size, function and wall stress. Myocardial speckle tracking (MST) provided peak, time to peak and temporal indices for RV longitudinal strain and strain rates (ε and SR). RESULTS:RV size was increased post-race (inflow tract 14 %, outflow tract 11 %, P = 0.004 and 0.002). RV wall stress was elevated by 11 % post-race. Peak RV ε was reduced by 10 % (P = 0.007) and significantly delayed post-race (P = 0.008). Most changes in RV function persisted at the 6-h assessment. Post-race there was an increase in the prevalence of right-sided ECG changes. CONCLUSIONS:Completion of a 100-mile ultra-marathon resulted in acute changes in RV structure and function that persisted 6 h into recovery and are consistent with sustained exposure to an elevated RV wall stress. These findings were supported by right-sided changes to the 12-lead ECG.

journal_name

Eur J Appl Physiol

journal_title

European journal of applied physiology

authors

Lord R,Somauroo J,Stembridge M,Jain N,Hoffman MD,George K,Jones H,Shave R,Haddad F,Ashley E,Oxborough D

doi

10.1007/s00421-014-2995-6

subject

Has Abstract

pub_date

2015-01-01 00:00:00

pages

71-80

issue

1

eissn

1439-6319

issn

1439-6327

journal_volume

115

pub_type

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