[quote]belligerent wrote:
[quote]Roygion wrote:
Is there any evidence (not faulty logic, physics) that supports the belief that slow training is safer than faster training (high intensity but low force is called the BEST training in the book). In anecdote, I’m guessing any serious training with serious loads can hurt you; after all, shit happens. But I’m looking for the comparative science showing one approach to be safe and the other less safe. One barrier to such injury evidence might be ethical concerns. But maybe it is out there.
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The critical factor witch respect to injury risk is acceleration. Basic physics tells you that s greater change in velocity results in higher forces. Since all injuries are caused by excess force, the less you accelerate, the lower your chances of injury. That much should be indisputable. [/quote]
This is exactly my point regarding how rhetoric and faulty applications of physics have been used by relative authorities to bedazzle their audience. In the well-known formula, F=MA, force includes both acceleration and MASS. A heavy enough resistance, even in the absence of visible movement, can produce injury, obviously. Trainees can be injured even using static contraction protocols, and with enough resistance, injury is likely.
Force plate examinations have shown the actual difference between a 10 second rep and a 2 second rep is really not that great as supposed, providing the initiation speed is maintained throughout the range of motion (no bounce, for example). Minimizing acceleration minimizes force IF the load is held constant. But none of this tells us anything about the thresholds for relative safety in lifting, which are currently unknown, and clearly affected by individual/genetic factors too (actually the book is decent on the genetics issue).
So saying that THE critical factor with respect to injury is acceleration is actually unsupported (your Newtonian misappropriation notwithstanding), even if increasing acceleration can increase force.
I ask simply for science (peer-reviewed evidence) that shows the application of superslow is better or safer in the various ways claimed or implied by the book (of which greater safety is but one implication). The other claims relating to strength and body transformation, which are highly pertinent to this venue, as Professor X rightly suggests, seem more sensational (like the unusual exercise INfrequency shown). At present, I have found no such evidence for those claims, and even the relevant literature that does exist, flawed as it is, is fundamentally different in parameters than those claimed in the book. And that’s a problem when trying to make an argument to folks that ask you actually to support claims.