Activeforever The Original Backnobber II - Manual (Page 20)

SHOULDER AND UPPER BACK DISCOMFORT
Trigger points can be found in the taut bands of muscles in the posterior
upper back and shoulders. The muscles provide the support mechanisms
for successfully performing everyday work and leisure activities. It is easy
to take for granted how many activities these specific muscles support,
such as providing the ability to sit and type at the computer, talk on the
phone, hold a child, garden or golf. All too often, we become acutely aware
of their existence when pain and discomfort occur. During stressful times,
whether physical or emotional, the shoulders and upper back generally
become tense.
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Infraspinatus fascia
Serratus posterior
superior
Rhomboideus
minor (cut)
Supraspinatus
Levator scapulae
Trapezius
Deltoid
Teres minor
Teres major
Trapezius
Deltoid
Teres minor
Teres major
Levator scapulae
Supraspinatus
Infraspinatus fascia
Serratus posterior
superior
Rhomboideus
minor (cut)