The influence of a half-marathon race upon cardiac troponin T release in adolescent runners.

Abstract:

OBJECTIVES:Post-exercise cardiac troponin T (cTnT) release has been widely reported in adult athletes but limited data is available for adolescents. The aim of this study was to determine the incidence and magnitude of cTnT appearance in a large group of adolescent runners, and to determine any association between cTnT release and personal characteristics of adolescents. METHODS:We recruited 63 adolescent runners (mean±SD: age 16.4±1.5 years; 10 females) who all completed a simulated half-marathon race (an all-out 21-km run) during routine training. Personal data collected included age, training history, 21-km run performance as well as pre-post exercise serum cTnT levels. Serum cTnT was assayed using a 3rd generation assay. RESULTS:At pre-exercise, cTnT concentrations were below the 0.01 µg/L cTnT detection limit of assay in 58/63 runners. The post-exercise cTnT level (range: <0.01-1.36 µg/L) was significantly (p<0.001) greater than that of the pre-exercise (range: <0.01-0.02 µg/L). After the exercise, 57 (90%) and 44 (70%) subjects had cTnT concentrations above the detection: 0.01, and clinical thresholds: 0.05 µg/L, respectively. Post-exercise cTnT was inversely correlated with training years (r=-0.25, p<0.05) and age (r=-0.31, p<0.05). Compared with runners who had trained for ≥ 3 years, runners with less training experience demonstrated increased post-race cTnT levels (p<0.01). CONCLUSION:cTnT increases are virtually universal among adolescent runners following a 21-km run during routine training and can reach levels typically diagnostic for acute myocardial infarction potentially initiating diagnostic dilemmas. Adolescents with less training experience had higher post-exercise cTnT.

journal_name

Curr Med Chem

authors

Nie J,George KP,Tong TK,Gaze D,Tian Y,Lin H,Shi Q

doi

10.2174/092986711796642625

subject

Has Abstract

pub_date

2011-01-01 00:00:00

pages

3452-6

issue

23

eissn

0929-8673

issn

1875-533X

pii

BSP/CMC/E-Pub/2011/ 258

journal_volume

18

pub_type

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