Bland-Altman analysis of the agreement between methods in tracking body composition. Bland-Altman analysis of the agreement between methods in tracking body composition changes (calculated as prior to competition minus period of stability). The middle solid line represents the mean differences between: %FM from DXA with %FM from the 4C model, the absolute FM from DXA with absolute FM from 4C model and absolute FFM from DXA with FFM from the 4C model. The upper and lower dashed line represents ± 2 SD from the mean i.e. 95% limits of agreement (± 1.96 SD). Trend line represents the association between the differences of the methods (DXA minus 4C model) and the mean of both methods in assessing %FM, FM and FFM. A significant correlation was observed for %FM and FM differences and the mean of the methods (p < 0.05) but not for FFM changes, as indicated by a non-significant p-value (p > 0.05).