<i>PPARG</i> genotype distribution and frequencies of <i>PPARG</i> gene 12Ala allele in Polish athletes stratified by the values of relative aerobic/anaerobic energy system contribution, time of competitive exercise performance and intensity of exertion in each sport.

aP values are calculated by χ2 test for comparisons between group of all athletes and control group as a whole. bP values are calculated by χ2 test for comparisons between groups of male athletes and male controls. cP values are calculated by χ2 test for comparisons between groups of female athletes and female controls. A Bonferroni corrected alpha level was set at 0.003. *Statistically significant differences (P<0.003).