BACKGROUND: Aerobic capacity has a high heritability,and with the development of molecular biotechnology,molecular genetic marker screening is helpful for gene diagnosis and predicting aerobic capacity. OBJECTIVE: To observe the distribution characteristics of single nucleotide polymorphism(SNP) of interleukin-6 gene in endurance athletes,explore whether it can be used as a molecular genetic marker,and whether there is any association between interleukin-6 SNP and serum level of interleukin-6. METHODS: Two ...