Figure 5.
Main metabolic adaptations induced by a 6-month training cycle in sprinters as reflected by plasma free amino acid concentration. Related physiological mechanisms are schematized. See further sections below for explanations. Abbreviations: 1-MHis, 1-methylhistidine; 3-MHis, 3-methylhistidine; bAla, β-alanine; Cit, citrulline; CK, creatine kinase; Gln, glutamine; Glu, glutamate; His, histidine; NH3, ammonia; Orn, ornithine; Phe, phenylalanine; Sar, sarcosine; Tyr, tyrosine; ↓, decrease; ↑, increase. Terms of use: The icons used in this figure are licensed under a CC BY 3.0 license. They are attributed to IYIKON (scale), Diego Naive (sprinter), Marz Gallery (biceps), Hrbon (cycles), and Supanut Piyakanont (muscle). The original versions can be found at https://thenounproject.com (accessed on 15 August 2024).