During a single set of bench press at 70% of maximum strength, using velocity-based feedback to control lifting speed results in about 12% more total weight lifted compared to using a fixed tempo,...
Mechanism
Synthesis from 1 study
Lifting faster makes your muscles need energy quicker, so your body uses more oxygen to keep making energy. This lets you do more reps without getting more tired from burning sugar without oxygen, so you lift more total weight in the same amount of time.
Most probable mechanism
When you lift weights as fast as you can, your muscles need energy more quickly. Your body responds by using more oxygen to make energy, which lets you keep going for more reps without getting as tired from burning sugar without oxygen. This lets you lift more total weight in the same amount of time.
Maximal concentric velocity increases the rate of muscle contraction and power output, raising immediate energy demand per unit time.
The increased power output and repetition rate elevate ATP demand beyond the capacity of immediate anaerobic stores, requiring faster oxygen delivery to mitochondria.
Increased oxygen delivery and utilization shift the relative energy contribution from anaerobic to aerobic metabolism, sustaining ATP production without accumulating fatigue-inducing metabolites.
Sustained aerobic ATP production allows more repetitions to be completed before fatigue limits performance, increasing total volume load without increasing time under tension.
Evidence from Studies
Supporting (1)
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Bench-Press Performed With a Velocity- and Tempo-Based Approach: Are There Differences in Volume Load, Time Under Tension, and Metabolic Demands?
Contradicting (0)
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Gold Standard Evidence Needed
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