During bench press exercises performed to failure at 70% of one-repetition maximum, the greater total volume lifted with velocity-based training is partly due to a higher reliance on aerobic energy...

During velocity-based bench press training, a greater reliance on aerobic energy metabolism contributes to higher total work volume, and when this metabolic factor is accounted for, the difference in total work between training conditions disappears.

When performing a single set of bench press to failure at 70% of maximum strength, using a velocity-based approach results in a higher proportion of energy coming from aerobic systems (41%) compared to a tempo-based approach (33%), with a corresponding reduction in anaerobic contribution, even though the total amount of anaerobic energy used remains the same.

When lifting weights to exhaustion at 70% of maximum strength, using a method that focuses on moving the bar as fast as possible results in about 12% more total weight lifted compared to a method that controls the speed of movement, while the total time the muscle is under load remains unchanged.

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, without changing how long the muscles are under load, suggesting that faster lifting can increase mechanical work by allowing more repetitions.

When performing bench presses to exhaustion at 70% of maximum strength, two different training styles—focusing on speed versus controlled tempo—lead to the same total amount of oxygen debt and estimated oxygen use, meaning the contribution from anaerobic energy systems is not affected by how fast or slow the lifts are performed.