Phase 2 was a cross-sectional study designed to measure and compare the metabolic and functional consequences of ID in a sample of highly-trained female rowers across a broad range of both fitness levels (novice to varsity)and iron status (normal, ID, and IDNA). This cross-sectional study was an analysis of the baseline data for potential RCT participants (IDNA) at the beginning of a training season. In addition to those IDNA subjects participating in the supplementation trial, we included a sample of non-anemic, non-iron deficient rowers. These subjects completed all baseline protocols in the lab, and recorded one week of training activities, in addition to all other baseline data collected. This cross-sectional study enabled us to investigate potential relationships between iron status and early training season performance.