Combat sport athletes involved in weight making may experience transient periods of low energy availability (LEA), resulting in symptoms of the relative energy deficiency in sport syndrome (RED-S), whilst additionally practising acute weight loss (AWL) methods, negatively affecting health and performance. The aim of this case study was to outline the impact of making weight (using novel within daily energy balance assessment) on symptoms of RED-S in a male international level Taekwondo (TKD) athlete. Over an 8 week period, the athlete adhered to a daily energy intake (EI) (1,690 kcal.day-1; 2.3g.kg-1 PRO, 3.4g.kg-1 CHO and 0.9g.kg-1 FAT) equating to resting metabolic rate (RMR). Body composition via Dual X-ray Absorptiometry, RMR and VO2peak, (utilising indirect calorimetry), venous blood sampling, cardiac scanning, strength (1-RM bench press/back squat), power (force velocity profile) and total mood disturbance (TMD) via a profile of mood states (POMS) assessments were made at regular intervals.
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