Core pressure and breathing
Can you breathe while your trunk supports a lift?
If you can hold a plank but have to brace before picking up groceries, I want to see the lift. That tells me what your trunk is being asked to do in the moment that bothers you.
What I mean by core pressure control
I use that phrase to talk about how the diaphragm, abdominal wall, and pelvic floor coordinate breathing and manage pressure as demands change. I’m interested in whether support comes in when you need it and adapts as you move. Breath patterns and pelvic floor activity can interact, although the details depend on the task.1
Can you get enough support for the task and still breathe comfortably?
What I check and retest
I might watch a light lift, note where you grip or hold your breath, then change the support or the load. We try the same lift again and compare effort and comfort. If the change seems useful, we see whether it helps in the activity you came in for.
What the research tells us
In a small trial for chronic low back pain, adding diaphragmatic breathing to stabilization exercises improved some measures of muscle activity and chest expansion. The trial found no clear added benefit for pain or disability.2 I use breathing as one thing to assess when it fits the person and the task.