Gene Genotype Injured Non-injured p-value
    23 % 76 %  
ACTN3 RR 9 39.1 17 22.3 0.1944
RX 9 39.1 30 39.5  
XX 5 21.8 29 38.2  
RR 9 39.2 17 22.4 0.1095
RX+XX 14 60.8 59 77.6  
RR+RX 18 78.3 47 61.8 0.1463
XX 5 21.7 29 38.2  
Allele R 27 58.7 64 42.1 0.0479*
X 19 41.3 88 57.9  
ACE DD 8 34.8 7 9.2 0.0038*
  ID 5 21.7 39 51.3  
II 10 43.5 30 39.5  
DD 8 34.8 7 9.2 0.0027**
II+ID 15 65.2 69 90.8  
Allele D 21 45.6 53 34.9 0.1853
I 25 54.4 99 65.1  
UCP1 A/A 7 30.4 24 31.6 0.9505
  A/G 12 52.2 37 48.7  
G/G 4 17.4 15 19.7  
A/A+A/G 19 82.6 61 80.3 0.8024
G/G 4 17.4 15 19.7  
Allele A 26 56.5 85 55.9 0.9427
G 20 43.5 67 44.1  
UCP2 G/G 5 21.7 22 28.9 0.7204
  G/A 11 47.9 36 47.4  
A/A 7 30.4 18 23.7  
G/G+G/A 16 69.6 58 76.3 0.5197
A/A 7 30.4 18 23.7  
Allele G 21 45.6 80 52.6 0.4067
A 25 54.4 72 47.4  
UCP3 C/C 1 4.3 11 14.5 0.2721
  C/T 8 34.8 31 40.8  
T/T 14 60.9 34 44.7  
C/C 1 4.3 11 14.5 0.1923
C/T+T/T 22 95.7 65 85.5  
Allele C 10 21.7 53 34.9 0.0939
T 36 78.3 99 65.1  
*: P-value < 0.05, **: P-value < 0.01
Table 1: Allele distribution associated with muscle strain of injured and non-injured athletes.