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Table 2 The ACTN3 R577X genotype and allele frequencies in all groups

From: ACTN3 Polymorphism: Comparison Between Elite Swimmers and Runners

Group

Number

Genotype

Allele frequency

R/R

R/X

X/X

R allele

X allele

Runners

      

 Long distance

65

13(20.0)*,**

29(44.6)*,**

23(35.4)*,**

55(42.3)¥, ¥¥

75(57.7)¥, ¥¥

 Short distance

72

29(40.3)***

31(43.1)***

12(16.7)***

89(61.8)¥¥¥

55(38.2)¥¥¥

 Total

187

57(30.5)

86(46.0)

44(23.5)

200(53.5)

174(46.5)

Swimmers

      

 Long distance

48

18(37.5)#, ^

18(37.5)#

12(25.0)#

57(57.0)&

43(43.0)&

 Short distance

43

16(37.2)^^

22(51.2)

5(11.6)

55(62.5)

33(37.5)

 Total

91

34(37.4)

40(43.9)

17(18.7)

108(59.3)

74(40.7)

Controls

217

48(22.1)

129(59.4)

40(18.4)

225(51.8)

209(48.2)

  1. Values are absolute (relative frequencies in parentheses)
  2. *χ 2(2) = 8.50, p < 0.01, genotype frequency, LDR vs. controls
  3. **χ 2(2) = 9.29, p < 0.01, genotype frequency, LDR vs. SDR
  4. ***χ 2(2) = 9.41, p < 0.01, genotype frequency, SDR vs. controls
  5. # χ 2(2) = 8.01, p < 0.02, genotype frequency, LDS vs. controls (χ 2(1) = 6.14, p < 0.01, RR genotype, SDS vs. controls
  6. ^χ 2(1) = 4.25, p < 0.04, RR genotype, LDR vs. LDS
  7. ^^χ 2(1) = 4.97, p < 0.03, RR genotype, SDS vs. controls
  8. ¥¥ χ 2(1) = 10.42, p < 0.001, allele frequency, LDR vs. SDR
  9. ¥¥¥ χ 2(1) = 4.32, p < 0.05, allele frequency, SDR vs. controls
  10. &χ 2(1) = 4.30, p < 0.04, allele frequency, LDR vs. LDS