Acute Metabolic and Muscle Oxygenation Responses to Different Eccentric Tempos Under a Fixed Velocity-Loss Threshold in Squat

A 4-second eccentric tempo induces greater metabolic and oxygenation responses under identical velocity-loss conditions while preserving power output and subjective perceptions. These findings highlight eccentric velocity as a key variable in velocity-based training, particularly for optimizing metabolic stress and training adaptations.