Question: I was just reading through “The role of shoulder muscles is task-specific” by Boettcher et. al (2010, Journal of science and medicine in sport) which found that in 90 degrees of shoulder abduction: – trapezius and serratus EMG activation increased with isometric external rotation – trapezius and serratus activation dropped to nearly zero with […]
exhalation
Q & A for The 16% – Is a Hip Shift Expansion or Compression?
Question: Just watched your latest propulsion video and a question struck me. Can you please explain how a hip shift is an expansion strategy? In this video: I break down a hip shift into its two possible outcomes and show you how to acquire each one. #hipshift #hipimpingement #billhartmanpt Find Bill: Instagram Facebook Twitter LinkedIn
Q & A for The 16% – Does Hip Flexion Measure Like Shoulder Flexion
Question: You’ve mentioned that different portions of the shoulder flexion are related to expansion of different parts of the ribcage. Is there a hip flexion arc that expands different parts of the body? Or is this concept only in shoulder flexion? In this video: I offer a look at how hip flexion mirrors shoulder flexion […]
Q & A for The 16% – Pelvis shape change vs. Pelvis Orientation
Question #1 In the Q & A video from below, you mention that when you get an anterior compression of the front of the pelvis, you will get a shape change that will steal IR and increase concentric orientation of the posterior musculature. I’m having trouble visualizing this orientation of the ilium and how this […]
Q & A for The 16% – How to Improve Agility and Cutting Mechanics with Lunge Variations
Question: I would love to hear about the contralateral KB reverse lunge mimicking getting into a cut, and an ipsilateral kB reverse lunge mimicking getting out of a cut? Cutting mechanics require moving from an externally rotated and inhaled position into a cut to a more propulsive and exhaled strategy out of the cut. If […]