PURPOSE: Blood lactate accumulation (ΔBLC) during maximal short-term exercise is a crucial indicator of peak glycolytic activation in anaerobic performance assessment. However, the relationship between ΔBLC and sprint performance remains inconsistent, potentially due to variations in testing protocols and the use of absolute rather than relative performance metrics. This study investigated the relationship between ΔBLC and cycling sprint performance, hypothesizing normalization to body weight is essential for accurate metabolic performance evaluation. METHODS: Twenty-two trained male athletes performed a 10-s maximal isokinetic cycling sprint on an ergometer. Power output and cadence were continuously recorded to calculate peak power (P RESULTS: ΔBLC exhibited significant correlations with body-weight-normalized maxΔP (r = 0.78, p <
0.001), P CONCLUSION: Relative, body-weight-adjusted metrics, particularly maxΔP and P