Fig. 1

Illustration of neck and trunk assessment; (a) the neck angle in reference posture, (b) the neck angle in the posture while carrying a bag, (c) the trunk angle in reference posture, and (d) the trunk angle in the posture while carrying a bag.

Illustration of neck and trunk assessment; (a) the neck angle in reference posture, (b) the neck angle in the posture while carrying a bag, (c) the trunk angle in reference posture, and (d) the trunk angle in the posture while carrying a bag.