title: Serum cardiac troponin response in adolescents playing basketball.
abstract: Cardiac troponin release is generally found in adult athletes after continuous-type endurance exercises or sport competitions. The purpose of this study was to investigate whether the physical stress experienced by adolescents while playing basketball, an intense, intermittent-type sport, could induce transient elevations of the serum cardiac troponin T (cTnT) and I (cTnI). Serum cTnT and cTnI levels in 10 male adolescent players (age 15.0 +/- 0.7 yr) were assessed immediately before and at 2, 4 and 24 h after a game randomly selected from a preseason basketball-training program. At 4 h following the game, serum cTnT levels in four of the ten subjects were above the cutoff of 0.01 ng . ml (-1) for myocardial injury. Two of these four subjects had values higher than the acute myocardial infarction cutoff of 0.05 ng . ml (-1). In three of the four subjects, the serum cTnI was above the cutoff of 0.06 ng . ml (-1) for myocardial injury. Nevertheless, serum cardiac troponins at 24 h had returned to pre-exercise levels. These findings suggest that the physical stress encountered during intense, intermittent-type sports could cause release of cardiac troponins in some adolescents at low risk for cardiac disease.
authors.affiliation: School of Physical Education and Sports, Macao Polytechnic Institute, Macao, China.
authors.forename: J
authors.initials: J
authors.lastname: Nie
authors.forename: T K
authors.initials: TK
authors.lastname: Tong
authors.forename: Q
authors.initials: Q
authors.lastname: Shi
authors.forename: H
authors.initials: H
authors.lastname: Lin
authors.forename: J
authors.initials: J
authors.lastname: Zhao
authors.forename: Y
authors.initials: Y
authors.lastname: Tian
mesh_terms: D000222:Adaptation, Physiological; D000293:Adolescent; D001490:Basketball / Q000502:physiology*; D006801:Humans; D008297:Male; D010865:Pilot Projects; D012372:ROC Curve; D012016:Reference Values; D013997:Time Factors; D019210:Troponin I / Q000096:biosynthesis* / Q000097:blood; D020107:Troponin T / Q000096:biosynthesis* / Q000097:blood
chemical_list: D019210:Troponin I; D020107:Troponin T