05/11/2026
That shake means it is working.
This is blood flow restriction training. We apply a cuff to the upper leg that partially limits blood flow back out of the muscle. The result is that the muscle fatigues at a fraction of the load it normally would. For an athlete in early injury recovery, that is everything. We get the strength stimulus without the joint stress.
What you are seeing here is his soleus being asked to coordinate and control the movement, not just muscle through it. The shake is not weakness. It is the nervous system recruiting every available fiber to do the job. That is the adaptation we are after.
Here is the part that matters. I am in the room watching every rep. When the movement breaks down, we fix it before it becomes a habit. When the compensation creeps in, we catch it. You cannot do that in a group. You cannot do that when your PT is bouncing between four patients. One patient, one clinician, the whole visit. That is how this works.
This is how we bridge the gap between your ankle feels fine and your ankle is actually ready to sprint, cut, and take contact.
Most athletes skip this part. They feel better and go back. We do not let that happen here.
Save this if you have a kid coming back from a lower leg injury and want to know what early strength work should actually look like.
📍 CD Physical Therapy — Holly Springs, NC