Fig. 4

Individual changes in the Omega-3 Index (O3I) in the treatment (n = 30) and control (n = 35) groups during a NCAA football season. The solid lines indicate the cutoff values for low- and high-risk categories. Values < 4 % are high-risk and values > 8 % are low-risk. Red blood cell O3I was calculated from plasma using a validated equation [48]. *indicates a significant difference compared to baseline (p < .001); †indicates a significant difference between groups (p < .001)