VBT hypertrophy: no extra chest growth on the bench

Choosing each session's load from bar speed did not produce more chest growth or a larger bench press 1RM gain. In a trial involving 19 trained young men, both loading approaches improved pectoralis major cross-sectional area and bench 1RM by roughly 15% over 10 weeks. The groups completed similar numbers of repetitions. For this hypertrophy comparison, the extra measurement did not translate into an extra adaptation.

What did velocity change in this trial?

The percentage-based training group, or PBT, used loading prescribed relative to 1RM. The velocity-based group, or VBT, had loads adjusted each session using the load–velocity relationship. This was a test of how to select training load across a training block. It should be distinguished from the question of which velocity-loss threshold should end a set. Assessments took place before training, midway through and after training.

Does less lowering time mean faster reps are better?

The VBT group accumulated less eccentric time under tension despite performing a similar number of repetitions. That difference came without a detectable advantage in growth or 1RM. It does not establish a preferred lowering tempo: the trial did not isolate tempo as the intervention. Likewise, an improved moving bench press does not imply that every strength measure improved. Maximal voluntary isometric contraction, or MVC, and surface EMG remained unchanged in both groups.

What belongs in a hypertrophy log without a device?

1. Record the bench load, completed sets and actual repetitions in each set.
2. If you already measure velocity, keep it alongside the entry and note why the load changed.
3. Review Big 3 1RM progress separately from the work completed during training.

These are logging suggestions, not a logging intervention tested in the trial. A device can remain an optional way to manage loading; this study supplies no reason to make it a prerequisite for chest hypertrophy. Nor does it show that repetitions alone explain all muscle growth or identify an optimal set prescription. The work you completed is still worth recording whether or not a speed reading is available.

In fairlift, use Big 3 records and the Muscle Index calculator to follow relative strength. The score does not measure pec size. The separate article on velocity-based 1RM prediction addresses a measurement question, rather than a growth benefit. Here, a small sample of trained young men limits the conclusion: no detected group difference is not proof of identical effects in women, beginners, other lifts or longer programmes.