AmpedTraining Blog

Rep Speed, Fatigue, and Motor Units

It’s been awhile since I’ve written a good old-fashioned hater post, which is ironic since that’s one of the reasons I started this site: to serve as a place to rebuke claims of guru bullshit. I’ve pretty well gotten away from that lately, for better or worse, but today I saw something that got me interested enough to write up a response.

Namely I want to talk about this recent obsession with movement speed (tempo) and motor unit recruitment. This is being touted as “revolutionary” by certain parties; although it might be new to the current crop of would-be Internet lifters and bodybuilders, this is not a new concept. In fact, in my brief decade in the gym, I can remember running into that same idea in half a dozen places in the early days of the ‘net, back when places like Deepsquatter and MFW were the only real places to get decent info.

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