Baseline iron parameters (serum ferritin and iron) were not statistically different between groups Morning rested blood collection pre and post exercise intervention. Bloods collected ~24-h post and VO2peak ~48 h post No screening of iron status Measured pro-hepcidin a prohormone form. Minimal comparisons to gold standard and other studies in exercise-based studies. ~Stage 2 iron deficiency, degree of change expected in 8 weeks is minimal. Hepcidin levels likely to be low in iron depleted individuals. Here, HAMP is linked to nutritional disorder.