Dr. Mike Roberts

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1,217 appearances 1 recordings 1 series first heard Jul 2026 last heard 8 Jul

Dr. Mike Roberts’s voice in public audio — every appearance, attributed to the second.

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Recordings per month over the last 12 months — 1 in all, peaking in Jul 2026 with 1.

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You can do 30% one-arm training close to failure, or you can do 80% close to failure, whatever you like.

If you're sadistic, you're a 30% person, right?

With the 80%, though, the key point here is you tend to get a little bit more strong.

Yeah.

Right?

So that's the added benefit of doing higher loads.

Casey Sexton published his dissertation in our lab showing we did one acute bout, and these were in well-trained individuals.

pre-biopsy in the morning.

They then did either 30% or 80% squat and leg extensory training.

And then we took biopsy six hours post and, excuse me, three and six hours post.

We looked at the global mRNA expression signature in that biopsy, exactly the same.

We looked at the mTORC1 signaling from those biopsies, exactly the same.

We looked at the myostatin markers in terms of downregulation of the pathway, exactly the same.

So that tells you indirectly that the mechanisms associated with mechanical overload respond in a similar fashion

when you do 30% fail training or 80% fail training.

In addition to that, Stu Phillips has shown that the muscle protein synthetic response is relatively similar.

And what is interesting, Andy, is that when you do the volume load calculations, whether it's 80 fail, 30 fail, it's actually the same volume load.

When you do the reps multiplied by the weight, there was not a statistical difference there.

We think it's a mechanical perturbation.

Yeah.

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