Associations of FGF-21 (log converted values) with areal (DXA) and volumetric (HRpQCT) bone density measures, cortical microarchitectural parameters, and strength estimates (FEA) in all subjects (All), amenorrheic athletes (AA), eumenorrheic athletes (EA), all athletes (ATH) and all non-athletes (N

Spearman correlations; ap<0.05 after controlling for lean mass; bp<0.05 after controlling for lean mass and activity; cp<0.05 after controlling for lean mass, activity and fat mass; BMD: bone mineral density; FN: femoral neck; vBMD: volumetric bone mineral density. All: all subjects; AA: amenorrheic athletes; EA: eumenorrheic athletes; ATH: all athletes; NA: non-athletes. P values ≤0.05 are bolded.