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Fig. 1 | BMC Sports Science, Medicine and Rehabilitation

Fig. 1

From: Significance of serum branched-chain amino acid to tyrosine ratio measurement in athletes with high skeletal muscle mass

Fig. 1

Association between skeletal muscle mass and serum albumin concentration or BTR (N = 111). Comparisons of serum albumin concentration and branched-chain amino acid to tyrosine ratio (BTR) between the quartiles for skeletal muscle index (SMI) (a). The SMI quartiles were as follows: Quartile 1, SMI ≤ 11.0 kg/m2; Quartile 2, 11.0 < SMI ≤ 11.9 kg/m2; Quartile 3, 11.9 < SMI ≤ 12.5 kg/m2; and Quartile 4, SMI > 12.5 kg/m2. The groups were compared with Kruskal–Wallis tests and Bonferroni multiple comparison tests (*p < 0.05, **p < 0.01). Results of the Spearman’s correlation analyses between SMI and serum albumin concentration or BTR (b). Open circles represent control participants and closed circles represent wrestling athletes

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