Participants
FHA
Participants with FHP were recruited from Chiang Rai province, through poster advertisement. Inclusion criteria included participants aged between 18 and 60 years with FHP (forward head angle [FHA] ≥ 46) who were willing to cooperate with the study. FHA measured from the vertical line to a line connecting the tragus and the seventh cervical vertebra. Participants with FHA greater than or equal to 46 degrees were arranged to FHP [