Background and Aim: Forward head deformity is one of the most common undesirable situation abnormalities associated with weakness of cervical stabilizer muscles. The purpose of this study was to investigate the effects of a 6-weeks strength training, stretch training and comprehensive training in patients with forward head posture.

Materials and Methods: Forty females students with excessive angle (FH>46 degrees) were chosen as samples using purposive sampling method. Anthropometric data were as below: age 22.22 ± 1.77 years, weight 61.22±1.90 kg, height 161.85±2.55 cm and body mass index of the samples 23.37±0.9 kg/m². The subjects were randomly divided into four groups of 10 experimental and control groups. The first experimental group performed strength training, second group stretch training and third group comprehensive training for 6 weeks. In this period, the control group did not receive any training. In this study photogrammetric method technique was used to measure the angle of the forward head. Head angle changes of the subjects before and after 6 weeks were measured.

Conclusion: The results demonstrated a significant decrease in the angle of forward head in the experimental group. Therefore, using of this program is recommended in subjects with this deformity.

Keywords: Forward head, Corrective exercises.

Background and Aim: Forward Head Posture (FHP) is one of the most common postural disorders which related to current life style. This disorder may cause some changes in motor control of cervical muscles.

Materials and Methods: Eight subjects with Forward Head Posture and 8 matched healthy subjects wereParticipated. The kinematic and electromyographic activity of each subject was analyzed and the flexion- Relaxation phenomenon was determined.

Results: The results showed that the cessation of flexion-relaxation phenomenon was different between two groups (P<0.05). The result of Pearson correlation showed a significant positive correlation between Cranio-vertebral angle and cessation of the phenomenon (P<0.05).

Conclusion: The flexion- relaxation phenomenon was different in Forward Head Posture related to the healthy subjects and the concentric contraction was started with delay in the Forward Head Posture subjects. Therefore, the motor control and balance disorder may be seen in these subjects.

Keywords: Forward Head Posture, Flexion- Relaxation, Electromyography, Kinematic