• Proceedings of the KIPE Conference
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• 전력전자학회 2002년도 전력전자학술대회 논문집
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• pp.661-664
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• 2002

A control of the body posture and movement is maintained by the vestibular system, vision, and proprioceptors. Afferent signals from those receptors are transmitted to the vestibular nuclear complex, and the efferent signals from the vestibular nuclear complex control the eye movement. The postural disturbance caused by loss of the vestibular function results in nausea, vomiting, vertigo and loss of craving for life. The purpose of this study is to develop a off-vertical rotatory system for evaluating the function of semicircular canals and otolith organs, selectively, and visual stimulation system for stimulation with horizontal, vertical and 3D patterns. The Off-vertical axis rotator which stimulates semicircular canals and otolith organs selectively is composed of a comportable chair, a DC servo-motor with reducer and a tilting table controlled by PMSM. And a double feedback loop system containing a velocity feedback loop and a position feedback loop is applied to the servo controlled rotatory chair system. Horizontal, vertical, and 3D patterns of the visual stimulation for applying head mounted display are developed. And wireless portable systems for optokinetic stimulation and recording system of the eye movement is also constructed. The Gain, phase, and symmetry is obtained from analysis of the eye movement induced by vestibular and visual stimulation. Detailed data were described.

• Journal of the Korean Society of Physical Medicine
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• 제13권2호
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• pp.61-68
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• 2018

PURPOSE: This study aimed to examine the effects of self-stretching (SS) and joint mobilization (JM) on pain, craniovertebral angle (CVA), autonomic system function in chronic cervical pain patient with forward head posture (FHP). METHODS: A total of 30 male college students were selected as study subjects, and were divided into Group I (general physical therapy; GPT, n=10), Group II (GPT+SS, n=10), Group III (GPT+JM, n=10). All groups were evaluated three times a week for 4 weeks. Pain was measured by visual analogue scale (VAS), CVA was measured using digital goniometer and autonomic system function (heart rate; HR, skin conductivity; SC, LF norm, HF norm, LF/HF ratio) was measured by Biofeedback ProComp Infiniti. After 4 weeks, paired t-test was used to compare the changes within the group and one way ANOVA was used to compare those between the groups. RESULTS: In Group I, VAS was significantly decreased. In Group II and III was a significantly change in all items. In comparison between Group I and II was a difference in all items except HR. In comparison between Group I and III was a difference in all items. In comparison between Group II and III was a difference in VAS, LF norm and LF/HF ratio. CONCLUSION: This study showed that SS and JM can effectively reduce pain and normalize the autonomic system function.

• The Journal of Korean Academy of Orthopedic Manual Physical Therapy
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• 제9권2호
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• pp.5-11
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• 2003

Thoracic outlet syndrome is actually a collection of syndromes brought about by abnormal compression of the neurovascular bundle by bony, ligamentous or muscular obstacles between the cervical spine and the lower border of the axilla. First of all a syndrome is defined as a group of signs and symptoms that collectively characterize or indicate a particular disease or abnormal condition. The neurovascular bundle which can suffer compression consists of the brachial plexus plus the C8 and T1 nerve roots and the subclavian artery and vein. The brachial plexus is the network of motor and sensory nerves which innervate the arm, the hand, and the region of the shoulder girdle. The vascular component of the bundle, the subclavian artery and vein transport blood to and from the arm. the hand. the shoulder girdle and the regions of the neck and head. The bony, ligamentous, and muscular obstacles all define the cervicoaxillary canal or the thoracic outlet and its course from the base of the neck to the axilla or arm pit. Look at the scheme of this region and it all becomes more easily understood. Compression occurs when the size and shape of the thoracic outlet is altered. The outlet can be altered by exercise, trauma, pregnancy, a congenital anomaly, an exostosis, postural weakness or changes. Thoracic outlet syndrome has been described as occurring in a diverse population. It is most often the result of poor or strenuous posture but can also result from trauma or constant muscle tension in the shoulder girdle. The first step to beginning any treatment begins with a trip to the doctor. Make a list of all of the symptoms which seem to be present even if the sensations are vague. Make a note of what activities and positions produce or alleviate the symptoms and the time of day when symptoms are worst. Also, note when the symptoms first appeared. This list is important and should also include any questions one may have.

• Physical Therapy Korea
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• 제15권1호
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• pp.61-68
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• 2008

The aim of the study was to evaluate the effect of a disease-specific exercise (DSE) on temporomandibular joint (TMJ) function and neck mobility in TMJ dysfunction associated with ankylosing spondylitis (AS). Ten AS patients (seven males and three females) with TMJ dysfunction were recruited for this study. The DSE included exercises to correct head and neck posture and to improve the flexibility of the neck and TMJs. The patients attended treatment three times a week for 4 weeks, averaging 1 hour each session. Assessments were performed pretreatment, posttreatment, and 6 weeks after the completion of treatment. General physical status was assessed by four clinical measures (tragus-to-wall distance, modified Schober test, lumbar side flexion, and intermalleolar distance), the Bath ankylosing spondylitis function index (BASFI), and the Bath ankylosing spondylitis disease activity index. The main outcome measures included TMJ function (craniomandibular index (CMI)), and neck mobility (flexion, extension, rotation, and lateral rotation). None of the measures of general physical status, with the exception of BASFI, were significant1y different between the pretreatment, posttreatment, and 6-week follow-up (p>.05). However, CMI and all neck movements, except for extension, significant1y improved after the treatment (p<.05). These improvements were maintained during the follow-up period. The DSE used in the present study seems to be a clinical1y useful method for managing patients with symptoms from the stomatognathic system in AS. Further studies with more subjects and longer treatment times, including the follow-up period, will be conducted to validate these findings.

• Physical Therapy Rehabilitation Science
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• 제6권2호
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• pp.65-70
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• 2017

Objective: The purpose of this study was to examine the intertester reliability and validity of four nonradiologic measurements of thoracic spine rotation in healthy adults. Design: Descriptive laboratory study. Methods: This study was conducted on 20 male and 20 female university students aged between 19 and 26. To measure thoracic rotation, a goniometer, a bubble inclinometer, a dual inclinometer, and a smartphone application-clinometer were used. The measurement was performed twice for each device and the same measurement was performed by two examiners. The measurements were performed in the lumbar locked position. The arm in the direction of rotation was taken back and placed onto the back of the lumbar region. With right and left trunk rotation, the head was rotated together but remained in the center line so that the axial rotation was maintained. Both examiners performed the measuring procedures and directly handled the measuring instrument. All measurement results were recorded by the recorder. Results: The range of motion (ROM) of thoracic rotation in lumbar locked position for all four devices was 47 degrees. The intra-rater reliability estimates ranged from 0.738 to 0.906 (p<0.05). The inter-rater reliability estimates ranged from 0.736 to 0.853 (p<0.05). The goniometer, bubble inclinometer, dual inclinometer, and smartphone clinometer showed high validity (p<0.05). This result indicates that all four devices may be used by the same examiner and by other examiners obtaining follow-up measurement. Conclusions: The use of the goniometer, bubble inclinometer, dual inclinometer, and smartphone clinometer for measurements in the lumbar locked posture are reliable and valid nonradiologic measures of thoracic rotational ROM in healthy adults.

• Korean Journal of Applied Biomechanics
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• 제15권4호
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• pp.181-189
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• 2005

To know the proper impact posture and changes for the various clubs, changes of impact variables according to the change of golf club length was investigated. Swing motions of three male low handicappers including a professional were taken using two high-speed video cameras. Four clubs iron 7, iron 5, iron 3 and driver (wood 1) were selected for this experiment. Three dimensional motion analysis techniques were used to get the kinematical variables. Mathcad and Kwon3D motion analysis program were used to analyze the position, distance and angle data in three dimensions. Major findings of this study were as follows. 1. Lateral position of the head remained more right side of the target up to 3.5cm compared to the setup as the length of the club increased. 2. Left shoulder raised up to 5cm and right shoulder lowered up to 2.5cm compared to setup. The shoulder line opened slightly (maximum 11 degrees) to the target line. 3. Forward lean angle of the trunk decreased up to 4 degrees (more erected) compared to setup. 4. Side lean angle of the trunk increased compared to setup and increased up to 16 degrees as the club length increased. 5. The pelvis moved to the target line direction horizontally and opened up to 31 degrees. Right hip moves laterally to the grip position at the setup. 6. Flexion of the left leg maintained almost constantly but the right leg flexed up to 11 degrees compared to setup. 7. Left arm is straightened but the right arm flexed about 20degrees compared to straight. 8. Center of the shoulders were in front of the knees and toes of the feet. 9. Hands moved to the left (8.7cm), forward (5.7cm) and upward (11.6cm) compared to the setup. This is because of the rotation of pelvis and shoulders. 10. Shaft angle to the ground was smaller than the lie angle of the clubs but it increased close to the lie of the clubs at impact.

• Physical Therapy Korea
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• 제27권1호
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• pp.70-77
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• 2020

Background: Neck pain can be caused by any structure in the neck, such as intervertebral discs, ligaments, muscles, facet joints, dura mater, and nerve roots. The hyoid bone is a structure that is also related to head and neck posture, neck movement and pain, but there are no studies on hyoid deviation, neck pain, and range of motion (ROM). Objects: The purpose of this study was to investigate the effect of fascia relaxation and mobilization of the hyoid bone on the ROM, pain, and lateral deviation of the hyoid bone. Methods: Twenty-five patients with neck pain identified by the lateral motion test (10 males [35.13 ± 7.67 years, 172.69 ± 3.90 cm, 78.77 ± 6.96 kg] and 15 females [35.13 ± 10.05 years, 161.11 ± 4.09 cm, 52.59 ± 2.98 kg]) was chosen randomly. Baseline values for pain, neck ROM, and lateral deviation in the hyoid bone were recorded using a visual analogue scale (VAS), goniometer, and tape measure. Then, each patient was treated with hyoid fascia relaxation and mobilization, and all results were recorded after intervention. Comparison of the results before and after intervention was analyzed using paird t-test (p < 0.05). Results: Right rotation, extension, VAS, and rotational asymmetry statistically significant differences (p < 0.05). Right rotation and extension increased ROM, rotational asymmetry ratio and VAS decreased. However, there was no significant difference in flexion, left rotation, center point (p > 0.05). Conclusion: Fascia relaxation and hyoid mobilization could improve the ROM of cervical extension, asymmetry of the cervical rotation and neck pain.

• The Journal of Churna Manual Medicine for Spine and Nerves
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• 제8권2호
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• pp.31-38
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• 2013

Objectives : The present study examines the domestic trend of Chuna treatments on lumbar spinal disorder in Korea. Methods : We investigated the studies on Chuna treatments for lumbar spinal disorder via searching 10 Korean web databases. As a result, 63 research papers were found to be analyzed according to their published year, the titles of journals, the types of study, the techniques of Chuna, the instruments for assessment, the Chuna technique and the number of the treatment trials by the cases of lumbar spinal disorder and ethical approvals. Results : The number of the research papers published tends to increase every year. The studies on Chuna treatments were mainly published in The Journal of Korea CHUNA Manual Medicine for Spine & Nerves. The most frequently adopted technique of Chuna in the examined studies was Cox flexion & distraction technique. Visual analogue scale(VAS), oswestry disability questionnaire(ODI) were used as primary means of assessments. The ethical problems of the examined studies needed to be improved. Conclusion : Reviewing the domestic trend of studies on Chuna treatments for lumbar spinal disorder and examining the strong and weak points of those treatments are essential for the future studies. It is anticipated that this review benefits the future in-depth study on the treatments for Chuna in Korean medicine.

• Journal of the Korean Society of Physical Medicine
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• 제10권2호
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• pp.29-34
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• 2015

PURPOSE: The purpose of present study was to introduces an exceptional case in measurement methods (CVA, CRA and Cobb angle) to identify the FHP with verified reliability and validity. Subjects: Three males aged 30 years were recruited: A Normal, B and C who have FHP. METHODS: All the subjects were measured CVA, CRA and Cobb angle with the Photogrammetry and Radiography. RESULTS: The results revealed that it is not enough for measurement methods to identify the FHP using CVA, CRA and Cobb angle. On Photogrammetry values; CVA had $65^{\circ}$, CRA was $148^{\circ}$ of Normal subject A and CVA had $61^{\circ}$, CRA was $149^{\circ}$ of FHP subject B and CVA had $51^{\circ}$, CRA was $149^{\circ}$ of FHP subject C. On Radiography values; CVA had $73^{\circ}$, CRA was $148^{\circ}$ and Cobb was $50^{\circ}$ of Normal subject A and CVA had $70^{\circ}$, CRA was $150^{\circ}$ and Cobb was $53^{\circ}$ of FHP subject B and CVA had $61^{\circ}$, CRA was $153^{\circ}$ and Cobb was $31^{\circ}$ of FHP subject C. CONCLUSION: The reliable CVA, CRA and Cobb angle use methods from the previous studies might not be suitable for the diagnose the FHP. We think that it is necessary to have more detailed evaluation methods and the radiography is also needed for clear evaluations because of some possible exceptions.

• The Journal of Korean Physical Therapy
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• 제33권4호
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• pp.179-186
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• 2021

Background: Patients with advanced asthma and chronic obstructive pulmonary disease (COPD) have postural deviations such as thoracic hyperkyphosis, forward shoulder posture (FSP) due to an increase in head and cervical protraction, reduced shoulder range of motion and a corresponding increase in scapula elevation and upward rotation. Unlike congenital vertebral kyphosis that are permanent and rigid deformities with bony and other structural deformations which cause respiratory impairment, these deformities in these patients may be more flexible. Since the thoracic hyperkyphosis has been implicated as having adverse health consequences it is necessary to evaluated the relationship between thoracic kyphosis and cardiopulmonary functions of patients with COPD and asthma. Methods: It was a cross-sectional analytical study. Eighty-four eligible patients with COPD and asthma were recruited from the Respiratory Unit, Department of Medicine, Lagos University Teaching Hospital (LUTH), and basic anthropometric parameters, pulmonary parameters, cardiovascular parameters, thoracic kyphosis (Cobb) angle and presence of respiratory symptoms of participants were assessed. Data was analyzed using SPSS version 20. Results: There was no significant correlation between the thoracic kyphosis and selected pulmonary parameters (Forced Expiratory Volume in one second (FEV1, p=0.36), Forced Vital Capacity (FVC, p=0.95), Peak Expiratory Flow Rate (PEFR, p=0.16), Thoracic expansion (TE, p=0.27)/cardiovascular parameters (Systolic Blood Pressure (SBP, p=0.108), Diastolic Blood Pressure (DBP, p=0.17) and Pulse Rate (PR, p=0.93) as well as the respiratory symptoms (SGRQ scores, p=0.11) in all subjects. Conclusion: There was no relationship between thoracic kyphosis and selected pulmonary/cardiovascular parameters as well as respiratory symptoms in patients with COPD and asthma.