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. 2017 Aug 1;58:121–130. doi: 10.1515/hukin-2017-0070

Table 2.

The IL-6 -174G/C genotype and allele frequencies in all groups.

Values are absolute (relative frequencies in parentheses).

Genotype frequency Allele frequency
C-allele G-allele C-allele
Group n G/G G/C C/C carriers
Controls 127 84 (66) 37 (29) 6 (5)1 43 (34)2 205 (81) 49 (19)33
Runners
Long distance 63 47 (75) 14 (22) 2 (3) 16 (25) 108 (86) 18 (14)
Middle distance 50 30 (60) 18 (36) 2 (4) 20 (40) 78 (78) 22 (22)
Short distance 72 45 (63) 26 (36) 1 (1) 27 (37) 116 (81) 28 (19)
Total 185 122 (66) 58 (31) 5 (3)4 63 (34)5 302 (82) 68 (18)6
Swimmers
Long distance 38 12 (32) 19 (50) 7 (18)7 26 (68)8 43 (57) 33 (43)9
Short distance 42 20 (48) 20 (48) 2 (4) 22 (52) 60 (71) 24 (29)
Total 80 32 (40) 39 (49) 9 (11) 48 (60) 103 (64) 57 (36)
1

χ2 = 14.01, d.f. = 2, p < 0.001 for genotype frequency in controls vs. swimmers

2

χ2 = 13.62, d.f. = 1, p < 0.001 for C-allele carriers frequency in controls vs. swimmers

3

χ2 = 13.75, d.f. = 1, p < 0.001 for allele frequency controls vs. swimmers

4

χ2 = 18.81, d.f. = 2, p < 0.001 for genotype frequency in runners vs. swimmers

5

χ2 = 15.45, d.f. = 1, p < 0.001 for C-allele carriers frequency in runners vs. swimmers

6

χ2 = 18.43, d.f. = 1, p < 0.001 for allele frequency in in runners vs. swimmers

7

χ2 = 21.65, d.f. = 4, p < 0.001 for genotype frequency in long distance swimmers vs. long distance runners and middle distance runners

8

χ2 = 18.16, d.f. = 2, p < 0.001 for C-allele carriers frequency in long distance swimmers vs. long distance runners and middle distance runners

9

χ2 = 22.34, d.f. = 2, p < 0.001 for allele frequency in long distance swimmers vs. long distance runners and middle distance runners