| Summary: | 碩士 === 國立體育大學 === 運動保健學系 === 102 === Background: To investigate the effect of forward head posture correction (FHPC) through deep breath with the help of a modified exercise bar. It’s an attempt to study (1) the effect of musculature co-contraction training on the muscles of the plumb line of the head and neck with the occipital bone’s repetitive positioning, (2) the stability of muscles on the plumb line of the head and neck and (3) the improvement of forward head posture.
Study design: quasi experiment design.
Methods and Subjects: It is to utilize modified exercise bar to help test the effect of musculature co-contraction training on the muscles on the plumb line of the head and neck with the occipital bone’s repetitive positioning. Altogether 112 college students were recruited (aged 19-27) as subjects. Each subject received a posture corrective exercise by inhaling and exhaling five times once for 20 seconds each with the intervention of improved exercise bars. Quantitative researches were used to compare horizontal distances of forward head from the plumb line of the head and neck before and after the experiment, measured with improved levels and rulers. Experiment subjects were chosen from those whose head forward distances were more than 2cm. The differences of the distances of forward head before and after experiment were recorded.
Results: There was a significant difference before and after the experiment. The FHP distance significantly decreased. While the biggest increase in the horizontal distance from the plumb line was 3.0cm, the biggest decrease was 5.5cm and the average decrease was 1.80±1.45cm. Distribution graph shows, before the experiment, the largest percentage of the subjects had a forward distance of 6cm, followed by those who had a 5cm forward head, with the smallest percentage of them having 9.5cm. The mild sufferers of head forward ranged from 3.0 to 5.4cm (43), the moderate sufferers ranged from 5.5 to 7.9cm, and the severest sufferers ranged from 8.0 to 9.5cm. The result found that the mild sufferers had an average decrease of 1.0±1.2cm; the moderate sufferers had an average decrease of 2.0±1.3cm, while the severest sufferers had an average decrease of 3.2±1.1cm. Before the experiment, 33 subjects had a head-forward distance of 4.5-5.5cm (29.5%), among whom 21 are males (32.9% of all the male subjects). In terms of difference concerning sex, it showed before the experiment among the highest percentage of the subjects (32, 28.6%) that had had a distance of 5.8 to 6.8cm, 17 (35.6%) were females. In terms of age, among those who had had a distance 4.5-5.5cm, 23 (32.0%) were aged 19-21. The result showed after the experiment the highest percentage of subjects had a distance decrease of 0.2-1.5cm (33.2 percent) among whom 24 (37.6%) are males. 25 (34.7%) of them were aged 19-21. Overall, among all the subjects, 99 subjects (88.4%) decreased the distance, 5 subjects (4.4%) increased the distance, and 8 subjects (7.2%) showed no difference. It proved positive correlations of the exercise bar intervention. When conducting the paired t-test to analyze the significance of difference between before and after experiment, it showed positive correlation. The level for statistical significance, α, was chosen as 0.05. The training significantly proved the decreases of the distance. The average shortened distance was 1.7±1.4cm and the difference was obvious (p＜.001).
Conclusion: With a modified exercise bar for forward head posture correction, the severest sufferers demonstrated the best effect of improvement, with the average decrease of 3.2±1.1cm. Furthermore, 99 (88.3%) out of the 112 subjects decreased the horizontal distance from the plumb line, 5 subjects (7.1%) were not affected.
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