Yesterday I was delivering a presentation for Faster to some personal trainers on movement training, coaching and some other stuff.

Something that came up in conversation was the issue that a lot of PT’s face when training their clients to squat, their knees often drop in on the way down, creating what’s known as a knee valgus. What seems to be getting thrown around the fitness industry is that this movement is bad, that it will lead to a knee injury, that it’s caused by weakness in the glutes and that getting stronger will fix it.

So I maintain muscle strength has very little to do with this occurrence and that it is down to the skill choice of the client to perform the movement. What what I really mean by skill is the sequence of movements.

When you ask a client to perform the task of squatting they will choose the sequence of bone motions and muscle contractions based upon what they perceive the best way to complete the task. Dropping the knee inwards will lengthen the glutes in all 3 planes getting it to contract and then bring the body back up. I would say that a knee drop is the bodies way of getting a good glute reaction.

So if you look up to the short video of a client of mine performing a jump, squat and rotate movement in multiple directions. Notice how he uses different amounts of lateral knee motion to complete each movement task depending on what he needs for each particular movement.

Am I worried whether or not he’ll blow out his knee, not in the slightest. If I was then he wouldn’t be doing the exercise.