Question: Why is it that increased airway resistance in a pursed-lip exhale has a facilitatory bias towards external oblique activation, while decreased airway resistance with an open, relaxed jaw exhale biases more internal oblique activation? Is the difference in airway resistance even the mechanism driving the bias between the different muscle groups? #infrasternalangle #breathingexercises #billhartmanpt […]
thorax
Q & A for The 16% – Increasing Shoulder External Rotation – Upper Back (Dorsal Rostral) Expansion
Question: I want to say I love your content and am so appreciative of what you’re doing to advance the field. I am wondering what Dorsal Rostral Expansion should feel like. I think I know how to do it, and I believe I can see it during certain exercises. Although I am not sure how […]
How to Measure the Infrasternal Angle to determine a Wide ISA or a Narrow ISA
The infrasternal angle is a useful test to determine breathing compensatory strategies that influence movement capabilities. Your ability to measure it effectively will provide understanding and guidance as to the best interventions to impact a client’s movement. Find Bill: Instagram Facebook Twitter LinkedIn #infrasternalangle #wideISA #billhartmanpt
Padawan Lesson: Propulsion Concepts Applied to Cutting and Baseball Pitching
We’ve been reviewing pressure and volume shifts throughout the pelvis that influence the pelvic diaphragm shape, position, and movement. In this video, we move up to the thorax to address the thorax movement, shape change, and airflow mechanics that occur with cutting to the side and a baseball throw. Just as we talk about propulsion, […]