One of the features of the Sports Medicine Acupuncture program is the emphasis on the channel sinews or jingjin. These are highlighted in dissection classes, but also in the assessment & treatment and corrective exercise classes.
The jingjin are an important part of the channel system and I have been exploring functional movement patterns of these channels since 1998; I am currently developing qigong and calisthenics patterns to strengthen the channel, improve body awareness and control, and improve the channel health. This is something that I will be presenting on this topic on at the upcoming Pacific Sports and Orthopedic Acupuncture Symposium from March 30th to April 3rd.
Human Structure and Shape, John Hull Grundy (out of print)
While you can look at the movement patterns of a particular channel, it is actually better to look at more comprehensive functional movement patterns that involve multiple related channels.
For instance, there is functional movement that lifts you into an upright and expansive posture. These movements involve an engagement of the back muscles which pull down on the pelvis and spine and lift the front channels, as seen in this excellent illustration to the left from an anatomy atlas by John Hull Grundy.
The full, expansive and upright posture that is the result of the back engagement occurs with a stabilization from a balanced, aligned and strong core where the respiratory diaphragm is aligned with the pelvic floor as seen in the illustration below.
Core Activation affecting intraabdominal pressure. Core engagement will help create a postural expression like the image on the left.
This overall pattern involves the Taiyang-Shaoyin channels. The video I filmed, featuring something I refer to as a Hanging Squat, highlights these channels well.
This functional movement exercise is a simpler version of an exercise called a front lever.
The position on the upright portion of the movement calls on muscles of the UB and SI jingjin, such as the gluteus maximus, the erector spinae, the lats, and the shoulder external rotators, but also the transverse abdominis and multifidi from the KID jingjin are engaged and the pelvic and respiratory diaphragms are aligned.
The exercise can be modified and made easier or harder by decreasing or increasing the angle the body makes with the ground when in the up position. This would be a great functional movement exercise for many shoulder and back conditions especially if these muscles are underutilized.
Of course, care should be taken and it is not appropriate for everyone. Understanding the mechanisms helps find modification or related exercises, which work the same channels.