To capture the participant's natural head-on-trunk alignment, each person was asked to look straight ahead and to march on the spot 5 times before each picture was taken. Each picture was taken within 5 seconds of the marching sequence. The location of the anatomical landmarks were determined by the BiotonixTM system and sent via the Internet to a central server for detailed calculations of body postures including FHP. The postural measurements were calculated from the anatomical landmarks and are indicated in Figures 2 and 3. A report of the postural assessment was generated for each participant and was reviewed by the investigators for the presence of FHP based on the tragus-to-acromion distance (HScal > 2.5 cm.) lone participant was excluded due to an anterior horizontal deviation less than 2.5 cm (tragus-to-acromion)]. Note that this value differs from the screening value of 5 cm since the latter was estimated from the posterior aspect of the acromion then aligning the set square to the tragus. The deviation from the photographs was a