Development of a SUP specific energy expenditure prediction equation. Nielsen-Kellerman serves as the leader in the development of rowing related and field weather monitors. Using some of these same technologies, they developed the SpeedCoach SUP. Using advanced GPS and accelerometer derived metrics, the SpeedCoach SUP allows for accurate measures for both speed and stroke rate. We developed three specific predictive algorithms for the SpeedCoach SUP to estimate oxygen consumption and overall energy expenditure (kcal’s/min). We have also monitored oxygen consumption on the water using field data collection techniques. Collectively, we have developed an objective approach for users to evaluate variations between boards and training/racing physiology.