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Men with the TT genotype of the CYP19A1 polymorphism exhibited higher circulating estradiol levels than the TC + CC genotype. The TT genotype in the CYP19A1 polymorphism and the C allele of the ESR1 polymorphism, an allele increasing ESR1 expression, were associated with low serum CK activity after the ultramarathon. A combination of these polymorphisms was correlated with changes in the serum CK activity. Therefore, estrogen-related genetic polymorphisms partially predict exercise-induced muscle damage, that is, skeletal muscle membrane disruption.
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Kumagai et al. (2022) studied this question.
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