I’m no foot expert, and all this is pure conjecture...
Chong Xie: Where should the foot impact the ground using hyperarch mechanism of the feet?
It seems that from t=1:20 and the photo of Lebron James, that Chong Xie thinks that hammer toes are the “secret”.
http://www.northcoastfootcare.com/pages/Corns-&-Calluses.html
Corns typically develop on the top of a hammertoe. The picture … illustrates the development of a corn on top of a hammertoe and at the tip of the toe near the toenail as well as under the ball of the foot.
Chong Xie: Exercise to Get the Full Functionality of Your Toes Back
Chong Xie’s video and logo remind me of something. Perhaps, he (re)”discovered” something.
Short Foot Exercise
Role of Intrinsic Strength in Foot Posture by Dr. Splichal
A 2011 study by Jung et al. compared the levels of muscle activation during the common foot exercises toe-curl with short-foot. ...
Jung et al. found that the short-foot exercise had much higher abductor hallucis muscle activation levels when compared to toe-curl exercise. ...
What if we could improve our client's foot function through an exercise technique that targets both hip, knee and foot alignment - therefore improving movement patterns, reduce knee pain and back pain or improving athletic performance? Pretty cool!
Chong Xie: Hyperarch Hop to strengthen the arch, toes, foot muscles,fascia and tendons
Again, Chong Xie’s videos remind me of something. Yet, another (re)”discovery”.
STRENGTHEN YOUR FLEXOR HALLUCIS LONGUS!
The flexor hallucis longus is the least known of all the "jumping muscles." Don't get me wrong, this muscle isn't going to improve your vertical jump as much as well-developed hamstrings, glutes, and spinal erectors; but this is an interesting muscle that can make a noticeable improvement in your jumping ability. ...
The best way to train this muscle in the weight room is by performing single leg calf raises while holding a dumbell. (See pictures below.) When performing this exercise, try to keep most of your weight on the big toe of the working leg.
Crunching your toes in your sneakers/shoes while at work or school is another "economical" way of strengthening these muscles. ...
Crunching a towel up in your toes while watching TV or working on the computer is another way to train these muscles without wasting any extra time.
Chong Xie: Hyperarch Squat for glutes, say good bye to conventional squat
Hmm, reminds me of a couple of articles.
4 Easy Progressions of the Short Foot to Provide Knee and Foot Pain Relief
To start we need to learn how to get into a good foot position, known as the “short foot” popularized by the late Dr. Janda. …
Next I’d try body weight squats in the short foot position. …
Next we can load the short foot position with some deadlifts …
Now we’ll progress to a split stance or lunge position. ...
Finally we progress to single leg exercises.
3 Reasons Why You Need to Short Foot by Dr. Splichal
Reason 1: Short foot leads to co-activation of the deep hip and pelvis stabilizers allowing for proper hip joint centration and greater glute engagement. …
Reason 2: Short foot creates a foot (subtalar joint) inversion moment which drives external rotation of the hips and greater glute engagement. ...
Reason 3: Short foot activates the navicular / medial arch sling which includes the posterior tibialis muscle up into the adductors, obturator fascia, pelvic floor and diaphragm - all via the deep myofascial front line.
So, it might seem that Chong Xie's curious observation of the “ideal” foot (Lebron James’s hammertoes) and the “development” of some exercises, incidentally lead to the “re-discovery” of the intrinsic muscles of the foot, err.. “hyper arch mechanism”.