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. 2021 Apr 13;18:29. doi: 10.1186/s12970-021-00430-8

Fig. 2.

Fig. 2

Changes in the bone turnover marker levels after Wingate anaerobic test (WAnT) in elite gymnast (EG) and physically active man (PAM) depending on the vitamin D3 levels. CTX, C-terminal telopeptide of type I collagen; PINP, N-terminal propeptide of type I collagen; a and b Lower body Wingate testing; c and d Upper body Wingate testing; I, changes in the peripheral blood 5 min post WAnT; II, changes in the peripheral blood 30 min post WAnT; white bars with stripes, 25(OH)D3 levels below 22.50 ng/ml; white bars, 25(OH)D3 levels above 22.50 ng/ml; grey bars with stripes, 24,25(OH)2D3 levels below 1.27 ng/ml; grey bars, 24,25(OH)2D3 levels above 1.27 ng/ml