Abstract
Injuries are a complex trait that can stem from the interaction of several genes.
The aim of this research was to examine the relationship between muscle
performance-related genes and overuse injury risk in elite endurance athletes,
and to examine the feasibility of determining a total genotype score that
significantly correlates with injury. A cohort of 100 elite endurance athletes
(50 male and 50 female) was selected. AMPD1 (rs17602729), ACE
(rs4646994), ACTN3 (rs1815739), CKM (rs8111989) and MLCK
([rs2849757] and [rs2700352]) polymorphisms were genotyped by using real-time
polymerase chain reaction (real time-PCR). Injury characteristics during the
athletic season were classified following the Consensus Statement for injuries
evaluation. The mean total genotype score (TGS) in non-injured athletes
(68.263±13.197 arbitrary units [a.u.]) was different from that of
injured athletes (50.037±17.293 a.u., p<0.001). The distribution
of allelic frequencies in the AMPD1 polymorphism was also different
between non-injured and injured athletes (p<0.001). There was a TGS
cut-off point (59.085 a.u.) to discriminate non-injured from injured athletes
with an odds ratio of 7.400 (95% CI 2.548–21.495,
p<0.001). TGS analysis appears to correlate with elite endurance
athletes at higher risk for injury. Further study may help to develop this as
one potential tool to help predict injury risk in this population.
Key words
athletic performance - muscle performance - genes - injuries - single-nucleotide polymorphisms