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Table 1 Equivalence of X, Y and Z axes with the movement that they represent

From: Studying upper-limb kinematics using inertial sensors: a cross-sectional study

Surface placement:

Humerus

Ulna and radius

Scapula

Sternum

Anatomical segment represented:

Humerus

Forearm

Scapula

Thorax

Axis

 X

IN-EX

PR-SU

AN–PO

Axial rotation

 Y

AB-AD

ElFL–EX

PR–RE

Flexion and extension

 Z

FL-EX

Carrying angle

ME-LA

Lateral rotation