More accurate measure of the horizontal distance from the center of the acromion to the center of the tragus. The screening was simply to identify those with potential FHP and the photographs were used to confirm this. Participants were then randomly assigned to control (C) or exercise (E) groups. A second set of photographs was taken using the same protocol after the 10-week exercise or control period. The computer operators were blind to the group assignment of the participants.
The three angles and three distances, commonly used to assess FHP. that were calculated by the Bioto- nixTM automated biomechanical assessment tool included shoulder-to-pelvis angle (the angle between vertical and the line joining acromion to mid-point between ASIS and PSIS indicating trunk inclination), head angle (the angle between horizontal and the glabella-to-tragus line), neck angle (the angle between horizontal and the tragus-to-C. line); and head distance (horizontal distance from tragus to vertical plumb aligned with base of fifth metatarsal); shoulder distance (horizontal distance from acromion to plumb line) and HScal (horizontal distance between
acromion and tragus). All angles were measured in degrees and distances were measured in cm
(Figures 2 and 3).