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. Author manuscript; available in PMC: 2009 Apr 13.
Published in final edited form as: Eur J Hum Genet. 2007 Nov 28;16(3):391–394. doi: 10.1038/sj.ejhg.5201964

Table 2.

ACTN3 R577X genotype frequencies (%) for controls and athletes

ACTN3
Genotype		 Total
control		 Total
athlete		 χ2 P-value White
control		 White
athlete		 χ2 P-value Black
control		 Black
athlete		 χ2 P-value
R/R 38.1 30.7 9.48 0.005 32.6 25.0 6.73 0.018 55.8 43.5 3.15 0.10
R/X 45.6 62.6 47.5 65.4 39.4 56.5
X/X 16.3 6.7 19.9 9.6 4.8 0

P-values represent one-tailed χ2 analyses.