“Renaissance Exercise equipment works the body in accordance with muscle and joint functions.” (1)
“We are proud to represent a philosophy and protocol that can help so many people reach their health and fitness goals safely and efficiently.” (1)
RenEx associate Ken Hutchins can be seen above instructing a client (or at least, what is supposed to be a client) to use a leg extension machine through a “full range of motion”. The machine appears to be one he either designed himself, or produced in cooperation with others via RenEx.
Below, RenEx associate Al Coleman (2) can be seen on video using the same, or similar machine, through a “full range of motion”. It appears that RenEx co-founder Joshua Trentine is instructing him through this exercise.
Considering the above it is clear that multiple RenEx associates have taken multiple clients through a “full range of motion” on a leg extension machine that they endorse through pictures, video, and associate usage on their website (including associate instruction of a fellow associate).
Now let’s see what author, speaker, trainer, and renowned bio-mechanics expert Bill DeSimone has to say about leg extension machines, their usage, and the human knee.
If Bill is correct, it is clear that RenEx grossly misunderstands “muscle and joint function”, both as it relates to machine design for exercise of the legs, and as it relates to human anatomy — and corresponding instruction (Joshua/Ken) and exercise performance (Al Coleman).
Following the logic of the above : since proper muscle and joint function has been compromised, the “safety” and “efficiency” of RenEx protocol, philosophy, equipment, and instruction, is at the very least, no longer clear.
Going further, while it is unclear if Joshua is performing a static hold or a dynamic movement in the images below, these images of the RenEx co-founder on a leg extension machine, only add further insult to injury as Joshua puts great internal stress on his knees.