a decreasing trendp = 0.08
In contrast, blood T 3 concentration increased with Se supplementation (RMD = + 0.17 ng/mL; 95% CI: +0.08, + 0.26; p = 0.0002) compared to the control mean (1.52 ng/ml), while T 4 concentration showed a decreasing trend (RMD = -0.47 μg/dL; 95% CI: -0.99, + 0.06; p = 0.08).