Hip internal rotation is essential for the ability to accept force during just about any ground-based activity.
It’s also essential for any hinging activity in the gym including all forms of deadlifts, kettlebell swings, split squats, step-ups, and lunges.
Here’s a couple easy ways to recapture hip internal rotation when you’ve lost it due to the concentric orientation and activity of the external rotators.
I get a lot of questions about where you can find more information about how I developed my model of human performance.
There are countless resources available.
Here’s some foundational resources you may find useful. Keep in mind, this is just the beginning.
Recognizing and Treating Breathing Disorders: A Multidisciplinary Approach https://www.amazon.com/dp/0702049808/ref=cm_sw_em_r_mt_dp_U_9uUlEbFG1GBX9 Anatomy of Breathing https://www.amazon.com/dp/0939616556/ref=cm_sw_em_r_mt_dp_U_BxUlEb5GQDBPX The Thorax: An Integrated Approach https://www.amazon.com/dp/1912085054/ref=cm_sw_em_r_mt_dp_U_sSUlEbQNPAE5F
I’ve been getting a lot of similar questions that appear to be related to understanding my references to wide infrasternal angles vs. narrow infrasternal angles.
When breathing is restricted such that full inhalation or full exhalation cannot be achieved, the infrasternal angle (ISA) provides guidance as to what compensatory strategy is being utilized to maintain respiration.
In this video, I explain the relationships between the sacrum, the ilium, the hip and acetabulum, and the spine. This should help provide a foundational understanding of the two archetypes that represent the breathing compensatory strategies.
Talking about possible influences on hip internal and external rotation.
There are plenty of clues in the anatomy. Anatomy texts rarely talk about real, living humans and try to apply dead guy anatomy to movement. It doesn’t work and often creates a limiting, confusing model.
Naming muscles external rotators is wrong because as we move, the way many of these muscles influence movement change and they can become internal rotators. Don’t let the name confuse you and limit your thinking.
[quick note: early in the video, I misspoke and said that the muscles below the line at the trochanters limits ER. That’s incorrect. They limit IR. Chalk that one up to not enough Neuro Coffee, doing creative work before the Neutein kicks in, and shooting video in the wee hours of the morning]
Have a great Friday and post your questions for the Q & A. askbillhartman@gmail.com subject line ask Bill Hartman questions.