• Journal of the Korea Society of Computer and Information
• /
• v.28 no.5
• /
• pp.83-93
• /
• 2023

The purpose of this study is to improve pain and injury through bicycle fitting and to propose rehabilitation methods. Pain and injuries caused by bicycles can be largely divided into knee and ankle pain, wrist, shoulder, neck, and back pain, and hip pain. The cause of these pains and injuries stems from incorrect bicycle fitting and posture. In order to improve these pain and injuries and prevent recurrence, appropriate bicycle fitting and rehabilitation exercise are needed. Pain and injury are divided into kinetic pain and pain by a fixed posture. In the case of kinetic pain, rehabilitation exercise is required along with inflammatory treatment, and pain by a fixed posture should understand the exact characteristics of the body and learn and practice bicycle posture according to the body's characteristics. Through this method, it can contribute to preventing the recurrence of bicycle pain and injuries and further creating an environment where a safe bicycle culture can be established.

• The Journal of Korean Orthopaedic Ultrasound Society
• /
• v.7 no.2
• /
• pp.132-137
• /
• 2014

We can test for small structures located at the surface layer as high resolution ultrasonic techniques and small probes were developed. Accordingly ultrasound became a useful tool in the diagnosis and treatment of wrist diseases. It is important to understand the anatomical structures and apply clinical features as well as these technical aspects when using ultrasound. The purpose of this article is to evaluate the usefulness and approach of ultrasound about typical diseases according to the area of the wrist pain.

• Journal of the Korea Convergence Society
• /
• v.10 no.7
• /
• pp.335-342
• /
• 2019

The purpose of this study was to investigate the current status of work-related upper extremity musculoskeletal pain in baristas and to identify the elements that are related to pain. The questionnaires were distributed to 100 workers in 63 cafes on Jeonju city in Korea. As a result of investigating work related pain, 65.3% (n=64) answered "yes" to the question that had pain at least once a week, month, or year, or 34.7% (n=34) answered "no". Most of the workers were right-handed, and when they felt pain, they felt 25 to 50% of time per day. Especially, baristas reported that the use of porter filters during work and the tamping operation were the most painful. In conclusion, our study indicated that necessary to introduce and develop a program to prevent cafe worker disease, as well as need to future research to improve work environment and posture according to the characteristics of the cafe works.

• Journal of the Korea Academia-Industrial cooperation Society
• /
• v.13 no.11
• /
• pp.5305-5310
• /
• 2012

This study is Carpal tunnel syndrome(CTS) disorder of median nerve at wrist. It is usually diagnosed through clinical manifestation and Nerve Conduction Study(NCS). NCS of the median nerve before and after operation were compared in twenty four patient's with CTS, in order to seventeen patient's evaluate the prognostic value of that findings. Analysis result symptom profile of CTS in total number of patient's 17 (Female:17, Male:0), 21 hands (Rt:9, Lt:4, Both:4), Ages(31~60), Mean duration of symptom months($46.6{\pm}36.1$), Mean interval between 1st and 2nd NCS months($20.5{\pm}7.1$), Sensory symptoms(Tingling:21, Numbness:19, Noctunal paresthesia:17), Motor symptoms(Thenar atrophy:20, Trigger finger:2, Morning stiffness:3), Post-operative symptoms(Free:38.1%, >50% improve:52.4%, <50% improve:9.5%). NCS was normal range after operation than before in Sensory nerve conduction study 4 patients's and Motor nerve conduction study 5 patients. Surgery before and after Sensory nerve action potential (SNAP) responses showed improvement over the previous results. Forward by the patient's occupation and occupation patterns of CTS, other treatment methods and surgical treatment of CTS by comparing the degree of improvement to identify and correct nerve conduction study to judge whether the patient's operation.

• Journal of the Korea Academia-Industrial cooperation Society
• /
• v.15 no.3
• /
• pp.1632-1640
• /
• 2014

This study was conducted to investigate the factors affecting smartphone addiction of university students and to provide the data for developing intervention program of smartphone addiction prevention. The data were collected from 354 university students and analyzed with t-test and multiple regression by using SPSS 18.0 program. The smartphone addiction rate was 27.4%, which the high risk group rate was 6.2% and potential risk group rate was 21.2%. The significant factors of smartphone addiction were gender(${\beta}=0.149$, p<.001), average daily using time in week(${\beta}=0.292$, p=.001), average daily using time in weekend(${\beta}=0.390$, p<.001), wrist pain in using smartphone(${\beta}=0.148$, p<.001), accident in using smartphone(${\beta}=0.133$, p=.002), sociality(${\beta}=-0.099$, p=.029), impulsiveness(${\beta}=0.211$, p<.001), SNS addiction(${\beta}=0.376$, p<.001). And these factors explained 43.3% of the variance in smartphone addiction. In conclusion, the results from this study indicated a need to develop the intervention program to prevent smartphone addiction considering these factors affecting smartphone addiction.

• Journal of the Korea Academia-Industrial cooperation Society
• /
• v.17 no.10
• /
• pp.628-634
• /
• 2016

Many pitchers suffer from various types of injury (distortion, sprain and so on). The rate of injury is increased if there are differences in strength between the extensor and flexor muscles when a joint movement is performed with maximum speed. However, there has been insufficient research into the injury caused by strength differences between the extensor and flexor muscles. Thus, the purpose of the study was to examine the effects of elbow ulnar collateral ligament injury on the maximal isometric strength in young baseball pitchers. The data collection was conducted for 2 weeks. The subjects (n=36) who participated in this study were placed into either the injury group (n = 18, IG) or normal group (n = 18, NG). The maximal isometric strength for the pectoralis major (PM), infraspintus (I), biceps brachii (BB), triceps brachii (TB), flexor carpi radialis (ECR) and extensor carpi radialis (FCR) muscles were determined by an isometric strength machine (K-DFX) and then the differences in strength were calculated by muscle group. All of the data were analyzed by SPSS 18.0 with the independent t-test. In the results, the maximal isometric strengths in the IG for the I (p=0.035), BB (p=0.031) and TB (p=0.041) were significantly lower than those in the NG, while that for the ECR (p=0.047) was significantly greater. In addition, the differences of the maximal isometric strength between the PM and I (p = 0.008), BB and TB (p = 0.002), and FCR and ECR (p = 0.032) in the IG were significantly greater than those in the NG. In conclusion, the differences in muscle strengths of the subjects in the IG were greater than those in the NG, which suggests that they might have a higher injury rate in the future. However, they might be able to recover from their injury and achieve better performance if the differences in strength were reduced by training.

• Proceedings of the Korean Institute of Industrial Safety Conference
• /
• 2002.05a
• /
• pp.307-312
• /
• 2002

새로운 산업 구조와 변화된 사회 환경으로 인해 우리나라에서 최근 급증하고 있는 직업병 중의 하나가 직업 성 근골격계질환(Work-related Musculoskeletal Disorders, WMSDs)이다. 이 질환은 특정한 신체 부위의 반복 작업과 불편하고 부자연스러운 작업 자세, 강한 노동 강도, 과도한 힘, 불충분한 휴식, 추운 작업 환경, 진통 등이 원인이 되어 목, 어깨, 팔꿈치, 손목, 손가락, 허리, 다리 등 주로 관절 부위를 중심으로 근육과 혈관, 신경 등에 미세한 손상이 생겨 결국 통증과 감각 이상을 호소하는 근골격계질환의 만성적인 건강장해다.(중략)

• The Korean Journal of Nuclear Medicine Technology
• /
• v.14 no.1
• /
• pp.105-110
• /
• 2010

Purpose: Three phase bone scan was considered sensitive in Patients with Reflex Symphathetic Dystrophy Syndrome (RSDS). Generally, three phase bone scan in the RSDS patients shows increased uptake of one side extremity joint. But three phase bone scan has been performed with flow, blood pool and delayed scan. We performed blood pool half body scan in order to investigate its usefulness. Materials and Methods: From October 2007 to September 2009, three phase bone scan (flow, blood pool, half body blood pool, delayed) was performed after injection of 750 MBq of $^{99m}Tc$-DPD in diagnosed patients with RSDS (M:F=8:7, R:L=9:6). For quantitative analysis, we obtained the count ratios of bilateral hands by drawing a region of interest (ROI) in the three phase images and compared with the count ratios of shoulders in half body blood pool and delayed images. Results: In flow images, right/left ratios were $1.09{\pm}0.53$. In blood pool images, right/left ratios were $1.13{\pm}0.47$ (hand), $1.08{\pm}0.26$ (shoulder). In delayed images, right/left ratios were $1.24{\pm}0.75$ (hand), $1.11{\pm}0.31$ (shoulder). As a result, Log of right/left counts of the others and that of shoulder blood pool image were correlated well with statistical significance (Spearman's R, p<0.005 SPSS for windows ver.12.0). Conclusion: Half body blood pool scan may be helpful in the diagnosis of patients with RSDS. Moreover, Half body blood pool scan reduced false negative and false positive rates. In order to improve agreement on interpretation of RSDS, Blood pool half body scan should be established as common criteria.

• PNF and Movement
• /
• v.14 no.2
• /
• pp.105-112
• /
• 2016

Purpose: The purpose of this study was to examine the effects of proprioceptive neuromuscular facilitation (PNF) wrist taping, after the application of a rhythmic stabilization (RS) technique, on the decrease of pain and the increase of grip strength in physical therapists who complained of wrist pain and to provide basic data on interventions for wrist pain patients. Methods: The subjects were 15 peoples in their 20s who complained of pain with a visual analogue scale (VAS) at five points or higher due to overuse of their wrists. They were randomly assigned to a control group, to which PNF wrist taping was applied after stretching (n=7), or to an experimental group (n=8), to which PNF wrist taping was applied after application of the RS technique of PNF. The experiment was conducted for four weeks, five times per week. VAS was measured in order to measure pain decrease, and grip strength (GS) was measured using a dynamometer. In order to compare within-group differences before and after the intervention, a paired t-test was performed, and in order to compare differences between the two groups, the analysis of covariance (ANCOVA) was used. All statistically significant levels were set at ${\alpha}=0.05$. Results: There were significant differences in changes of VAS and GS within each group before and after the intervention (p<0.01), but there was no significant difference between the two groups. Conclusion: This study applied PNF wrist taping after the application of stretching or PNF RS to patients who complained of pain beyond a sense of discomfort; these interventions resulted in a decrease in pain and an increase in the grip strength of the subjects. Taping and therapeutic techniques using PNF are considered to be usefully applied as one of the programs to improve wrist pain patients' pain and grip strength.

• Journal of the korean academy of Pediatric Dentistry
• /
• v.48 no.2
• /
• pp.184-197
• /
• 2021

The purpose of this study was to investigate the characteristics related to the musculoskeletal disorders in pediatric dentists and general dentists. This study was conducted based on the survey results of a total of 109 dentists who have been working for the last year. Forty - three pediatric dentists and 66 general dentists were surveyed through online survey tool. Both pediatric dentists and general dentists mainly complained of musculoskeletal disorders in the neck, shoulders, wrists, and back. Most pediatric dentists usually suffered from back pain due to their unbalanced posture while giving dental treatments. Pediatric dentists in sedative treatment felt more pain in particular part of their body, such as neck and shoulder. Regular exercise and stretching for the prevention of musculoskeletal disorder have been shown to mainly relieve pain in the back but no other parts in their body.