Latissimus dorsi length (flexibility) test (GDY body1st 21)

Latissimus dorsi length (flexibility) test (GDY body1st 21)

Welcome back geniuses~
‘I’m GDY. In the last episode We studied the five body types with a short latissimus dorsi. Do you want to test your clients
to see if lats are short or normal? Let’s study that right now. First, have your client lie down comfortably. You don’t have to bend his leg. Tell your client to bend his arm in front of him and touch the floor with his forearm. His arm doesn’t spread wider. If his latissimus dorsi length is appropriate, his forearm can touch the floor
without moving his trunk and pelvis. This shows that latissimus dorsi, which has a lot of attachment points, including the pelvis, lumbar spine,
thoracic spine, and humerus is not short. If his lats are short,
he will show you these patterns. First pattern. Your client can’t achieve the 180 degrees
of the normal range of shoulder flexion. His lats is shorter than the normal length. Do you remember? The short latissimus dorsi
pulls the humerus back. So it will be limited when
the humerus flexes forward. Of course, there are other muscles
which can limit shoulder flexion: the pectoralis major, coracobrachialis, and the levator scapula . We need to consider these muscles. Second pattern. Fortunately, your client’s forearm
touched the floor. Oops, but your ‘client’s trunk
lifts off of the floor. The thoracic and lumbar spine
are extending forward. The pelvis is also not neutral, and it is tilting forward. His latissimus dorsi is shorter
than the normal length. Do you remember? The short lats make the pelvis tilt forward and increases the lordosis of the lumbar spine. Let me push his trunk. The short latissimus dorsi can affect shoulder flexion
or movement of the pelvis and lumbar. Try to bend his both legs and hold
them in front of his chest, Let his pelvis tilt backward about twenty degrees. As you can see, the degree of
his shoulder flexion decreases. Wait, the person who has an excessive
forward curve of the lumbar and excessive forward-tilted pelvis
may complain about pain in their low back. There is a risk of the disc of
the lumbar being overactive. Just be careful. Third pattern. Put your client’s arm
ninety degrees abduct, and bend the elbow ninety degrees,
and externally rotate. He should have achieved ninety
degrees of external rotation. Imagine that his shoulder joint’s
external rotation range is below ninety degrees. The muscles that rotate internally
are shorter than the normal length; the humerus bone will be
limited in external rotation. Do you remember? The short latissimus dorsi muscle
rotates the humerus bone internally. It will be unable to rotate externally
to the fullest extent. Of course, the pectoralis major, the teres major, and the subscapularis are also internal rotators of the humerus. What do you think? It’s not difficult to find
the short latissimus dorsi. If you ‘don’t understand, watch episode 20. If you want to be an expert,
don’t just memorize how. You need to understand
why that occurs. Whether it’s testing, exercise,
or manual techniques, it’s all the same. To understand precisely, just one principle is more important than 100 methods
of getting rid of the shoulder pain. Methods will always change. I hope this video will help you
to be a genius in body types. see you soon guys

One Reply to “Latissimus dorsi length (flexibility) test (GDY body1st 21)”

  1. 제 증상이 아무리봐도 광배근이 짧아진거같은데 항상 스트레칭 폼롤러로 문질러도 왜 똑같을까요

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