## 3 Results
Figure 1: Distribution of abnormal biomarkers (above and below reference values). * The reference values correspond to the standardized values for Spanish Andalusian women up to 101 years of age. ** They correspond to the reference values for adult women aged 20–60 years. *** Correspond to reference values for adult women aged 15–40 years. CK: Creatine Kinase; Mg: Magnesium; T.S.I. : Transferrin Saturation Index. Table 3 shows the bivariate correlations between the variables of age, body composition, and biomarkers of muscle damage in the groups of players with insufficient and normal vitamin D status. Correlations were observed between age and vitamin D levels, both in the group of players with values within the reference ranges (r = 0.657, \(p\) = 0.011) and in those with deficient vitamin D levels (r = \(-\)0.873, \(p\) = 0.010). Significant moderate negative correlations were also observed in the low vitamin D subgroup for vitamin D levels and FM values in kilograms (r = \(-\)0.786, \(p\) = 0.036). Table 4 shows the binary logistic regression analysis of the odds of having elevated levels of muscle damage (CK) as a function of vitamin D status, menstrual cycle, body fat, and dietary habits. No significant relationships were observed between any of the variables. \begin{table}
\begin{tabular}{l r r r r r} \hline  & \multicolumn{1}{c}{**B**} & \multicolumn{1}{c}{**\(p\)**} & \multicolumn{2}{c}{**OR**} & \multicolumn{2}{c}{**95\% CI**} \\  & & & & **Lower** & **Upper** \\ \hline Vitamin D deficiency & \(-\)0.030 & 0.706 & 0.970 & 0.829 & 1.136 \\ Irregular menstrual cycle & 0.188 & 0.893 & 1.207 & 0.077 & 18.853 \\ \hline \end{tabular}
\end{table} 
Table 4: Influencing factors in the presence of elevated CK levels. \begin{table}
\begin{tabular}{l r r r r r} \hline  & \multicolumn{2}{c}{**Vitamin D Deficiency *} & \multicolumn{2}{c}{**Adequate Vitamin D *} & \multicolumn{2}{c}{**Mann–Whitney Test**} \\  & \multicolumn{2}{c}{**(n = 7)**} & \multicolumn{2}{c}{**(n = 14)**} & \multicolumn{2}{c}{**Mann–Whitney Test**} \\  & \multicolumn{2}{c}{**M (Min–Max, IQR)**} & \multicolumn{2}{c}{**M (Min–Max, IQR)**} & \multicolumn{2}{c}{**U**} & \multicolumn{2}{c}{**_p_**} \\ \hline Magnesium (1.60–2.6 mg/dL **) & 2.11 (1.83–2.16, 0.14) & 2.07 (1.90–2.30, 0.13) & 45.00 & 0.765 \\ CK (26–192 UI/L) & 158.00 (67.60–307.00, 90.00) & 190.00 (93.70–290.00, 80.75) & 43.00 & 0.654 \\ Total Cholesterol (140–240 mg/dL) & 157.00 (119.00–177.00, 43.00) & 160.00 (114.00–204.00, 20.50) & 36.00 & 0.331 \\ Ferritin (8–252 ng/mL) & 62.10 (13.80–123.00, 82.00) & 75.55 (12.40–181.00, 62.33) & 46.00 & 0.823 \\ Serum own (50–170 ug/dL) & 65.00 (40.00–147.00, 48.00) & 83.50 (320.0–1680.00, 44.5) & 38.00 & 0.412 \\ Transferrin (215–365 mg/dL) & 248.00 (208.00–361.00, 64.00) & 243.50 (195.00–337.00, 54.25) & 43.50 & 0.681 \\ TSI (15–50%) & 18.81 (7.90–35.68, 11.21) & 22.50 (8.08–51.36, 19.63) & 35.00 & 0.296 \\ Basal Cortisol (10–26 ug/dL) & 19.90 (16.90–22.80, 1.70) & 17.85 (14.20–21.70, 4.78) & 24.00 & 0.062 \\ Testosterone (12–59 ng/dL) & 32.26 (23.76–51.39, 17.96) & 39.97 (10.40–71.41, 22.86) & 46.00 & 0.823 \\ Free Testosterone (0.02–4.6 pg/mL **) & 1.10 (0.80–1.80, 0.80) & 1.30 (0.70–2.50, 0.83) & 42.00 & 0.599 \\ Serotonin (0–200 ng/mL) & 93.00 (70.00–241.00, 49.00) & 124.50 (58.00–178.00, 59.50) & 35.00 & 0.322 \\ Regular menstrual cycle (\%) & 85.7 & 78.6 & 0.694 \# \\ \hline \end{tabular}
\end{table} 
Table 2: _Cont._