• PNF and Movement
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• v.17 no.3
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• pp.471-480
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• 2019

Purpose: This study examined the correlations between a forward head posture and the endurance and maximal voluntary contraction of the deep neck flexor, neck pain, and the changed position of the mandible. Methods: The subjects of this study were 50 male and female adults who work at a desk for at least four hours a day. The head-spine angle was photographed with a camera, and the endurance and maximal voluntary contraction of the deep neck flexor and the changed position of the mandible were measured using pressure biofeedback. The Neck Disability Index was used to measure neck pain. To examine the correlations between a forward head posture and the endurance and maximal voluntary contraction of the deep neck flexor as well as the changed position of the mandible, a Spearman's correlation analysis was conducted. The statistical significance was set at 0.05. Results: A forward head posture and the endurance of the deep neck flexor showed a statistically significant positive correlation, and a forward head posture and neck pain showed a statistically significant negative correlation. In addition, the endurance of the deep neck flexor and neck pain showed a statistically significant negative correlation. Conclusion: The results of this study show that a forward head posture and the endurance of the deep neck flexor were correlated; in addition, a forward head posture and neck pain were correlated. Therefore, enhancing the endurance of the deep neck flexor can assist in correcting an imbalanced forward head posture, which can reduce neck pain.

• The Journal of Korean Academy of Orthopedic Manual Physical Therapy
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• v.19 no.2
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• pp.23-29
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• 2013

Background: People who have painful neck have reduced proprioception in the neck. Reduced proprioception in the neck is related to the muscle spindle activity in the deep neck flexors. The aim of this study was to know that proprioception in the neck was increased by strengthening exercise of the deep neck flexors. Methods: Thirty subjects with chronic neck pain were randomly assigned to the experimental group (n=15) and the control group (n=15). Deep neck flexor muscle exercise with stabilizer were conducted for the study group three times a week for six weeks. Relocation errors in 30 degree rotation to the left were measured three times before and after intervention each. Results: Neck disability index were decreased in the experimental group (p<.05) but not in the control group (p>.05). Relocation errors were decreased in the experimental group after intervention (p<.05), but not in the control group (p>.05). Conclusions: Proprioception in the neck can be increased by the strengthening exercise of deep neck flexors in the subject with chronic neck pain.

• Journal of the Korean Society of Costume
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• v.36
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• pp.139-148
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• 1998

In order to know what sorts of features of neck form may be required to make plans for tight collars, the neck form of young japanese women were measured three demension-ally using GRASP(Grating Projection System for Profiling) and plaster torso. By the BASIC language in NEC computer and EXCEL program in MACINTOSHI computer, it became possible to draft a number of neck surface auomatically, therefore, we got analysis of a mass of subjects. Thed following results were obtained: 1. There was a large individual difference in the shape of neck, in particular, on the front and side curves of the neck base line, where the undulation of clavicular part of neck and inclination of shoulder are refracted. 2. When designing a stand collar, from the viewpoint of clothing strcture, it is important to grasp exactly the shapes of the neck, such as the line of the neck base, the neck gradient, back neck length, back neck width & girth. 3. According to the somatotypes(turing-over, standard, bending type), there were different the method of the basic collar pattern making.

• Journal of the Korean Society of Physical Medicine
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• v.5 no.1
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• pp.1-6
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• 2010

Purpose : This research intended to find out the effects of scalenus medius muscle relaxed posture on the increase of head-neck rotation for general adults. Methods : This research was conducted on 30 subjects whose both sides head neck rotation angles are not the same and that agreed to participate in the experiment. In a posture of sitting erectly on a mat, both sides head neck rotation angles were measured with C-ROM equipment, and while supporting arm in direction opposite the side where head neck rotation limited and leaning over the body at 45 degree and neck at vertical condition against ground, head-neck rotation angles were measured each with C-ROM equipment. Results : The Head-Neck rotation angle on the side of limited head-neck rotation demonstrated more increase in scalenus medius relaxed posture than in erect sitting posture, showing significant difference statistically(p<0.05). The head-neck rotation angle on the side of non-limited Head-Neck rotation demonstrated more decrease in scalenus medius relaxed posture than in erect sitting posture, not showing any significant difference statistically (p>0.05). Conclusions : This posture may be used for preventing limit of head-neck rotation caused of scalenus medius muscle tension and increasing head-neck rotation.

• The Journal of Korean Physical Therapy
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• v.23 no.1
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• pp.29-35
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• 2011

Purpose: The purpose of this study was to identify the effect of neck exercises on neck-shoulder posture and pain of high school students with neck disorders. Methods: Twenty seven subjects were randomly assigned to one of 3 groups a craniocervical flexion training group (CCFT), a neck strengthening exercise group (ST), and a basic stretching exercise group (CG). CCFT and ST exercised five times a week for eight weeks under the researcher's guidance. The control group performed basic stretching exercises. Diagnostic radiologic equipment was used for the measurement of neck-shoulder posture. Neck disability index, and numeric rating scales were used. Results: The CCFT showed a significant pre-post treatment difference on measures of neck flexion angle and forward shoulder angle changes compared to the ST and CG groups (p<0.05). The CCFT group also showed a significantly greater improvement on the neck disability index and numeric rating scales changes than the ST and CG groups (p<0.01). Conclusion: Because CCFT decreases neck flexion angle, forward shoulder angle, neck disability index, and pain in the forward head posture, it is useful for treating patients with neck disorders.

• Journal of the Korean Society of Physical Medicine
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• v.16 no.3
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• pp.81-87
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• 2021

PURPOSE: This study compared the cross-sectional areas (CSA) of the cervical muscles of straight neck patients and normal participants during a craniocervical flexion exercise (CCFE) using computerized tomography (CT) to investigate the effects of CCFE on the cervical curve. METHODS: Eighteen subjects were recruited for this study. Nine subjects were allocated to the straight neck group (subjects with pain and a cervical lordosis angle of less than 20°); the remainder formed the control group (subjects with a cervical lordosis angle greater than 20°). The CSA of the subjects' neck flexors (longus colli, longus capitis, and sternocleidomastoid) were measured by CT during rest and CCFE in the supine position, and the range of motion (ROM) of neck flexion was measured using a C-ROM instrument in a sitting. RESULTS: The straight neck group had a significantly smaller CSA of the longus colli, longus capitis, and sternocleidomastoid than the control group (p < .05). Both the straight neck and control groups showed statistically significant increases in the CSA of the neck flexors during CCFE compared to that at rest (p < .05). In addition, the straight neck group showed a significantly smaller ROM of neck flexion than the control group (p < .05). CONCLUSION: The results of this study provide more concrete evidence for therapists by demonstrating that CCFE improves the neck function by strengthening the neck flexors and increasing the neck stability for straight neck patients. Therefore, it is necessary to perform CCFE and neck extension exercises to rehabilitate straight neck patients.

• Korean Journal of Head & Neck Oncology
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• v.29 no.2
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• pp.71-74
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• 2013

Neck mass is a common manifestation from head and neck malignancy, most of which come from mucosal squamous cell carcinomas in the upper aero-digestive tract. However, once aspiration cytology suggests atypical malignant cells in the neck mass rather than metastatic squamous cell carcinomas, it is confusing to decide the adequate diagnostic work-ups and treatment planning. Here, we report a 29-year-old woman presenting with a growing neck mass mimicking malignancy of unknown origin, which was finally diagnosed as primary lymphoepithelial carcinoma in the parotid gland with multiple metastases to the lymph nodes. The patient underwent comprehensive neck dissection and total parotidectomy and the adjuvant radiation treatment was given. Our report highlight that the primary salivary gland cancer should be considered as the potential tumor origin in case of malignancy of unknown origin in the head and neck region and neck mass suggestive of atypical carcinomas.

• PNF and Movement
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• v.17 no.2
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• pp.253-261
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• 2019

Purpose: The purpose of this study was to identify the causal relationship between workplace stress and working posture and the development of work-related neck pain in office workers. Methods: The study participants included 62 office workers who had not experienced neck pain in the previous 12 months. A battery of measures to evaluate potential workplace risk factors in an office setting were conducted at baseline, and the 12-month incidence of work-related neck pain was reported via monthly questionnaires. Survival analysis was used to evaluate the longitudinal relationship between the workplace risk factors and the development of work-related neck pain. Results: The incidence of work-related neck pain was 1.91 (95% CI: 1.06-3.45) per 100 person months. The incidence of neck pain was predicted to be less likely to happen when workers had a more upright thorax posture during computer work (hazard ratio, 0.94; 95% CI: 0.89-0.99). However, stress may deteriorate the preventative effects of other risk factors on neck pain and showed a positive relationship with episodes of neck pain (hazard ratio, 1.37; 95% CI: 1.03-1.84). Conclusion: Understanding the psychophysiological effects of neck pain may explain the development of neck pain in office workers. Our interest in prevention plans and treatments should therefore involve a multifactorial pathology of neck pain in the workplace.

• Journal of the Korean Society of Clothing and Textiles
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• v.15 no.2 s.38
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• pp.139-150
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• 1991

The purpose of this study is to do the Somatotype classification according to the type of shoulder-neck and to give the thinkness of shoulder pad according to them. Therefore this study was measurement body size of 201 and the somatotypes were classified as their plumb line. The standard somatotype of this measurement was classified as 9 type according to its angle of shoulder inclination and neck length. Pads which have different thickness (1 cm, 1.5 cm, 2 cm) were attached to the 9 body type and the set-in sleeve blouse and raglan sleeve blouse were made and tring test and sensory test were accomplished. The results of this study were as follows: 1 . Classification of shoulder-neck relationship. Angles of shoulder inclination ($15^{\circ},\;21^{\circ},\;27^{\circ}$), lock lenaths (10 cm, 12.5 cm, 15 cm) were classi- fied as 3 type each and these types were combined as 9 types. II . The result of angle difference of shoulder inclination according to pad thickness. 1) In case of set-in pad. angle is increased $5.75^{\circ}$ per 1 cm of pad thickness. 2) In case of raglan pad. angle is increased $6.45^{\circ}$ per 1 cm of pad thickness. III. The most fit pad thickness to the 9 types. In case of set-in sleeve blouse. 1) High shoulder-long neck, Standard shoulder-long neck Low shoulder-long neck, Stan-dard shoulder·standard neck. Low shoulder-standard neck: 1.5 cm. 2) High shoulder-standard neck, Standard shoulder-short neck, Low shoulder-short neck: 1 cm. 3) High shoulder-short neck: 0 cm(without pad) In case of raglan sleeve blouse. 4) High shoulder-long neck, Standard shoulder-long neck, Low shoulder·long neck, Stan-dard shoulder-standard neck, Low shoulder-standard neck: 1.5 cm. 5) High shoulder-standard neck, Standard shoulder-short neck, Low-shoulder-short neck: 1 cm. 6) High shoulder-short neck: 0 cm(without pad)

• Physical Therapy Korea
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• v.23 no.2
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• pp.20-34
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• 2016

Background: It is necessary to find and develop the effective way of intervention for patients with neck pain, since the neck pain is becoming increasingly common throughout the world. To identify the altered motor control in patient with neck pain would be informative to find and develop the effective way of intervention. Objects: The aim of this study was to review literature regarding the altered motor control in patients with neck pain, measured by using surface electromyography (sEMG), ultrasonography, and functional magnetic resonance imaging (fMRI), and to suggest prospective research work on neck pain. Methods: Case-control (neck pain/healthy) studies published between 2004 and 2015 that investigated neck muscle activation, thickness, cross-sectional area, and fat infiltrate were searched in Scopus, PubMed, and ScienceDirect. Twenty-eight articles were included in this study. Results: sEMG, ultrasonography, and fMRI were used complementarily to investigate the altered superficial and deep neck muscle activation, thickness, cross-sectional area, and fat infiltrate in patients with neck pain. They showed the following altered motor control when compared retrospectively with healthy subjects or during specific functional tasks: (1) increased superficial muscle activation, (2) lesser deep muscle thickness, (3) smaller cross-sectional area of the deep muscle, and (4) greater fat infiltrate in deep muscles. In particular, among the women, the office workers showed higher muscle activation of superficial neck muscles during functional tasks, although they did not have neck pain, than those who were not office workers. Conclusion: Studies revealed that patients with neck pain showed an altered motor control when compared with healthy subjects by using various assessment modalities. Understanding this phenomenon would help researchers design an effective intervention for alleviating neck pain or to evaluate the effectiveness of the intervention. In addition, we recommend that female office workers take measures to care for their necks before developing neck pain.