نوع مقاله : مقاله پژوهشی
نویسندگان
1 دانشجوی کارشناسی ارشد فیزیوتراپی، دانشکده توانبخشی، دانشگاه علوم پزشکی ایران، تهران، ایران
2 دکترای تخصصی فیزیوتراپی، استادیار و هیئت علمی، دانشکده توانبخشی، دانشگاه علوم پزشکی ایران، تهران، ایران
3 دکترای تخصصی فیزیوتراپی، دانشیار و هیئت علمی، دانشکده توانبخشی، دانشگاه علوم پزشکی ایران، تهران، ایران
چکیده
کلیدواژهها
موضوعات
عنوان مقاله [English]
نویسندگان [English]
Background and Aim: Forward Head Posture (FHP) is one of the most common postural abnormalities in the cervicothoracic region that can lead to muscle imbalance and probably future pain. However, there is no study available assessing muscle strength in these patients compared with healthy individuals.
Materials and Methods: A total of 18 FHP and 16 healthy individuals were recruited after signing the informed consent. The strengths of cervical flexor and extensor muscles were assessed using handheld dynamometer in supine and prone lying positions, respectively. Three 5-second trials of maximum voluntary isometric contraction of cervical flexion and extension were performed with 1-minute rest interval between them and the mean value of the trials was considered for further analysis.
Results: FHP group demonstrated significantly lower cervical muscle strength in both flexion (P=0.001) and extension (P=0.000) directions as compared with those of healthy participants. There was no significant difference between flexor and extensor muscles in either FHP or healthy participants (P<0.05). Conclusion: FHP individuals exhibited flexor and extensor muscles weakness in comparison with participants. Findings of the present study intensify the necessity of muscle strengthening program for FHP individuals as well as all asymptomatic computer users or people that have prolonged driving or sitting habit in their routine lifestyle.
کلیدواژهها [English]
10. Nakama, S., et al., Cervical muscle strength after laminoplasty. Journal of orthopaedic science, 2003. 8(1): p. 36-40. ##
11. Barton, P.M. and K.C. Hayes, Neck flexor muscle strength, efficiency, and relaxation times in normal subjects and subjects with unilateral neck pain and headache. Archives of physical medicine and rehabilitation, 1996. 77(7): p. 680-687. ##
12. Florencio, L.L., et al., Cervical Muscle Strength and Muscle Coactivation During Isometric Contractions in Patients With Migraine: A Cross‐Sectional Study. Headache: The Journal of Head and Face Pain, 2015. 55(10): p. 1312-1322. ##
13. Dowman, L., et al., Reliability of the hand held dynamometer in measuring muscle strength in people with interstitial lung disease. Physiotherapy, 2015. ##
14. Scheuer, R. and M. Friedrich, Reliability of isometric strength measurements in trunk and neck region: patients with chronic neck pain compared with pain-free persons. Archives of physical medicine and rehabilitation, 2010. 91(12): p. 1878-1883. ##
15. Ahmadi, A., N. Maroufi, and J. Sarrafzadeh, Evaluation of forward head posture in sitting and standing positions. European Spine Journal, 2015: p. 1-6. ##
16. Kwon, J.W., S.M. Son, and N.K. Lee, Changes in upper-extremity muscle activities due to head position in subjects with a forward head posture and rounded shoulders. Journal of physical therapy science, 2015. 27(6): p. 1739. ##
17. Sajjadi, E., et al., The effect of forward head posture on cervical joint position sense. Journal of Paramedical Sciences, 2014. 5(4). ##
18. Shaghayegh Fard, B., et al., Evaluation of forward head posture in sitting and standing positions. Eur Spine J, 2016. 25(11): p. 3577-3582. ##