• 한국직업건강간호학회지
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• 제15권1호
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• pp.14-29
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• 2006

Purpose: The purposes of this study were to survey the extent of pain and discomfort in the musculoskeletal system among visiting housekeepers, above all concerning neck, shoulder, back, wrist, knee, and arm pain and to find possible relations between symptoms and various working conditions. Method: A questionnaire was answered by 174 woman visiting housekeepers living in Kyeonggi-do and Seoul from December 1, 2003 to February 30, 2004. The symptoms of musculoskeletal system were coded by the pain index which illustrates the extent of the symptoms, and analyzed in view of NIOSH guideline and Kim, et. al.'s notion. Result: 1. As to the complaint rate of subjective musculoskeletal symptoms by body region, the figure was the highest for shoulder with 78.2%, followed by back with 66.7%, knee 53.6%, neck 56.3%, wrist 40.2%, and arm 29.2%, respectively. The logistic analysis showed shoulder pain and arm pain have no relation with working and health conditions, and back pain was significantly related to current health condition. In same way, knee pain and wrist pain were found to be mainly related to marital status. 2. Following the NIOSH guideline, the positive rate of subjective musculoskeletal symptoms was found out in following order: shoulder 69.5%, back 59.2%, knee 54%, neck 46%, wrist 32.8%, and arm 25.3%. To investigate the main cause of each disease, the symptoms were classified by pain index, where the value of more than 3 comes to the NIOSH case, and analyzed in term of complaint rate using discrete logistical method : shoulder pain was highly related to the housekeeping time after work, back pain was to current health condition and the heavy weight carrying and neck, wrist, arm pain were commonly related to the ordinary health condition. For knee pain, working speed was a main cause. 3. In view of Kim et. al.'s standard, where the pain index is over 7, the positive rate was showed in order slightly different from previous analyses : shoulder 33.3%. knee 29.9%, back 28.2%, neck 17.2%, wrist 17.2%, and 16.7%. From the logistical analysis, insufficient rest was shown as the main cause of shoulder, back, arm and wrist pain. For neck pain, ordinary health condition was mainly related. In case of knee pain, any apparent relation is not found. Conclusion: According to the logistic regression analysis of musculoskeletal system, there was strong suggestion that the less insufficient physical rest, the more significant disorder complaint. This means that the most musculoskeletal symptom among the visiting housekeepers can be prevented and cured by sufficient physical resting.

• 대한인간공학회지
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• 제31권5호
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• pp.687-694
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• 2012

Objective: This study aims to survey the prevalence of musculoskeletal disorders(MSD) among Korean hospital workers and to analyze the relationship of MSD symptoms and workload perceived by workers. Background: Despite of high exposure to the MSD risk factors and high MSD symptom prevalence among health care workers, there were not enough studies of MSD prevalence among the hospital workers. Method: This study designed a survey based on Nordic questionnaire to obtain MSD symptoms and the degree of four perceived workloads: work repetition, urgency, physical exertion and satisfaction. In this survey, 1,846 workers in a hospital participated. The prevalence of MSD was analyzed for each body part, and MSD cases, which were predetermined in this study, were identified. The relationship between the MSD cases and each perceived workload was analyzed using chi-square test. Results: The pain in the shoulder was the most prevalent among the workers as 52%, and the low back(37%) and leg discomfort(36%) followed. The MSD cases, in which degree of pain was more than severe, were also the most prevalent in the shoulder(13%). Female workers had higher rate of MSD cases than the males. Among the four workload variables, the physical exertion was the statistically related to MSD cases for all the body parts. In addition, the others also had significant relation to MSD cases except one or two body parts. Conclusion: This study found that Korean hospital workers had MSD symptoms mainly in the shoulder, low back and legs in order, and the perceived workload surveyed in this study was highly correlated with MSD symptoms. Application: This study provides another evidence that subjective physical exertion perceived by workers is an important factor to explain MSD cases as same as the objective one.

• 한국전문물리치료학회지
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• 제30권3호
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• pp.211-220
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• 2023

Background: Smartphone addiction has emerged as a significant social problem. Numerous studies have indicated the association between smartphone use and discomfort in the musculoskeletal system of the upper extremities. Objects: This cross-sectional survey aimed to compare the characteristics of musculoskeletal pain in the neck, trunk, and upper limbs between individuals with smartphone addiction and those without addiction. Methods: We collected a total of 326 healthy individuals' data from China and Korea who had owned and used smartphones for more than 5 years between 20-50s through an online questionnaire consisting of 84 questions in four major sections. The first part contained basic information on the participant's personal characteristics and smartphones. The second part contained questions about smartphone use and posture. The third part was the smartphone addiction. The fourth part was to investigate musculoskeletal pain in various upper body parts. Results: Smartphone addiction has a weak negative correlation with age (r = -0.20, p < 0.01) and a weak positive correlation with the hours of smartphone use (r = 0.376, p < 0.01). Frequent musculoskeletal pain symptoms related to smartphone use were observed in the neck, shoulder, lower back, and wrists. The hours of smartphone use was slightly positively associated with the prevalence of musculoskeletal pain in the shoulder (r = 0.162, p < 0.05) and lower back (r = 0.125, p < 0.05). The prevalence of musculoskeletal pain in the neck (χ² = 3.993, p < 0.05), shoulder (χ² = 6.465, p < 0.05), and wrist (χ² = 4.645, p < 0.05) was significantly higher among females than males. Conclusion: The results suggest that smartphone addiction should be recognized as a dual concern encompassing both physical health and psychosocial aspects. Furthermore, healthcare professionals, including physicians and physical therapists, should consider clients' smartphone usage patterns when assessing and treating with musculoskeletal pain.

• 한국산학기술학회논문지
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• 제14권6호
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• pp.2935-2944
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• 2013

본 연구는 일반 사무직근로자의 근골격계 자각증상 정도에 따른 직무스트레스, 자기효능감, 우울 및 건강관련 삶의 질에 미치는 영향을 알아보기 위해 시행되었다. 광주광역시 D보건소와 D구청에서 근무하는 근로자 중 구조화된 설문지를 자발적으로 조사에 응한 83명 중 응답이 불충분한 근로자 3명을 제외한 80명을 최종 분석대상자로 선정하였다. 실험 결과 근골격계 자각증상 정도에 따른 직무스트레스, 자기효능감, 우울 및 건강관련 삶의 질은 모두 유의한 차이가 있는 것으로 나타났으며, 건강관련 삶의 질을 제외한 우울, 자기효능감, 직무스트레스 간에 유의한 상관성을 보였다. 결론적으로 일반 사무직 근로자의 근골격계 자각증상의 정도가 심해질수록 직무스트레스, 자기효능감, 우울 및 건강관련 삶의 질 요인에도 영향을 미치는 것을 알 수 있었다. 향후 근골격계 장애에 따른 불안전한 직무스트레스, 자기효능감, 우울 및 건강관련 삶의 질의 개선을 위해 다양한 프로그램 개발 및 시행이 필요할 것이다.

• 한국간호교육학회지
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• 제29권1호
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• pp.60-71
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• 2023

Purpose: The purpose of this study was to identify changes in the experience rate and level of symptoms of visual display terminal syndrome in college students attending online classes during the COVID-19 pandemic. Methods: Data were collected from February 22 to June 8, 2021 at three measurement points. A total of 117 college students were administered a visual display terminal syndrome survey just before online classes (T1), one month after the start of online classes (T2), and three months after the start of online classes (T3). The collected data were analyzed by frequency and percentage, paired t-test, McNemar test, and repeated measures analysis of variance using the IBM SPSS 25.0 program. Results: The intensity of college students' visual display terminal syndrome during online classes increased at T2 and T3 compared to T1. The rate of experiencing back discomfort or pain increased abruptly at T2 compared to T1. The intensity of college students' eye related symptoms and skin related symptoms increased at T2 and T3 compared to T1, while the intensity of college students' psychological symptoms, general body discomfort, and musculoskeletal symptoms increased at T3 compared to T1. Conclusion: The results of this study suggest that self-care programs are needed to prevent visual display terminal syndrome in college students who are in long-term online classes.

• 한국콘텐츠학회논문지
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• 제13권2호
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• pp.348-358
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• 2013

본 연구는 컴퓨터 마우스 사용으로 인한 근골격계 질환을 예방하기 위해 개발한 랩보드(lap board)의 효과를 알아보고자 하였다. 연구참여자는 20대의 근골격계 증상이 없는 대학생 10명이었으며, 랩보드에서 마우스를 사용할 때와 책상에서 마우스를 사용할 때 상지의 움직임, 근전도, 작업수행도 및 주관적 불편도의 차이를 비교분석하였다. 동작분석결과, 어깨 굽힘(shoulder flexion), 어깨 안쪽돌림(shoulder internal rotation) 및 아래팔 엎침(pronation)의 평균 각도가 랩보드와 책상에서 마우스 작업 간에 유의한 차이가 나타났다(p<0.05). 그러나 랩보드와 책상에서 마우스 작업을 할 때의 근활성도, 수행도 및 주관적 불편도는 차이가 나타나지 않았다. 랩보드를 사용할 때 작업자의 상지는 책상에서 보다 몸통에 가깝게 위치하였으며, 랩보드를 선호하는 학생은 10명 중 6명이었다. 컴퓨터 마우스 작업으로 인한 근골격계 질환 예방을 위한 진전된 연구가 수행되기를 기대한다.

• 대한인간공학회지
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• 제19권2호
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• pp.15-31
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• 2000

The aim was to evaluate the prevailing ergonomic and psychosocial conditions regarding low back injury in an automobile assembly system. This study consisted of two parts. In the first part of the study, analytic biomechanical model and NIOSH guidelines were applied to evaluate risk levels of low back injury for automobile assembly jobs. Total of 246 workers were analysed. There were 20 jobs having greater back compressive forces than 300kg at L5/S1. Also, there were 44 jobs over Action Limit with respect to 1981 NIOSH guidelines. This might in part be explained by the ergonomic conditions of the company analysed generally being good, with a relatively low duration of 'combined' extreme work posture. The relationship between psychosocial factors and low back injury was examined in the second part of the study. It has recently been recognized that overall reaction to working conditions was influenced by a range of factors, some of which were physical and some psychosocial. The psychosocial environment surrounding the work place may contribute to the perception of risk and eventual ill-health. A battery of questionnaires concerning the psychosocial stress based on PWI(Psychosocial Well-being Index) and musculoskeletal pain symptoms at low back was completed by 246 workers at the same plant. Results showed that 207 out 246 workers experienced the symptoms and 27 workers were diagnosed as patients. Two groups(low stressed, high stressed) based on PWI score had no significant relationships with both symptoms and results of diagnosis. However, sensitivities for symptoms and diagnosis by PWI were 91.3% and 92.6% respectively. Finally, relationships between physical work load and psychosocial stress were analysed. Specifically, some postural factors {vertical deviation angle of forearm, horizontal deviation angle of upperarm, vertical deviation angle of thigh, etc) were highly correlated with psychosocial stress. The results illustrated that PWI scores were associated with some physical workloads. However, psychosocial stress levels couldn't be well related with the pain symptom as well as the actual incidence of low back injury since pain or discomfort regarding low back injury were more complex than that of other musculoskeletal disorders.

• 한국산업보건학회지
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• 제25권2호
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• pp.220-228
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• 2015

Objectives: The purpose of this study was to investigate estheticians' self-reported pain symptoms and pain levels according to the parts of the hand. Methods: Data were collected through a questionnaire survey among 116 estheticians from 31 skin care centers and spas. Information about general characteristics, job characteristics and work characteristics were based on data from the self-administered questionnaire. To determine the self-reported pain symptoms and pain levels according to the parts of the hand, a Cornell Musculoskeletal Discomfort Questionnaire was used. Results: The subjects had the greatest self-reported pain symptoms in the thumb(Right: 53.4%, Left: 46.6%) and felt the highest level of pain in the wrist(Right: 4.87 points, Left: 4.71 points). Physical burdens and age had statistically significant effects on the pain level in the right hand, while physical burdens and the manager rather than the director had statistically significant effects on the pain level in the left hand. Conclusions: Since the thumb and wrist have the greatest subjective pain symptoms in the hand, the use of proper tools is recommended in order to reduce the usage of the thumbs during massage, as is regular stretching to protect the wrists.

• Journal of Preventive Medicine and Public Health
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• 제47권3호
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• pp.169-176
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• 2014

Objectives: This study aimed to evaluate occupational symptoms and chemical exposures of nail salon technicians. Methods: Work-related symptoms of nail salon technicians in Daegu City were surveyed using a researcher-administered questionnaire, and responses were compared to those of non-exposed office workers as controls. Personal exposure level of airborne volatile organic compounds was also monitored using passive samplers. Results: A total of 159 subjects in 120 salons were interviewed. Average work-shift concentrations of 13 chemicals were measured for 50 workers from 30 salons using personal passive samplers. The most frequently reported respiratory or neurologic symptoms by nail shop technicians compared to controls were nose irritation (odds ratio [OR], 54.0; confidence interval [CI], 21.6 to 134.8), followed by headache (OR, 9.3; CI, 4.7 to 18), and throat irritation (OR, 4.3; CI, 2.2 to 8.5). For eyes and skin, 92% of respondents complained eye irritation (OR, 13.1; CI, 5.7 to 30.1). In musculoskeletal symptoms, workers reported pain or discomfort in shoulders (OR, 20.3; CI, 7.7 to 54) and neck (OR, 19.7; CI, 8.9 to 43.6). From personal measurements, the proportion of exceeding the Korean Occupational Exposure Limit was the highest for acetone with 64%, followed by toluene (50%), butyl acetate (46%), and methyl methacrylate (12%). However, the service was being provided without a proper ventilation system in most surveyed shops. Conclusions: Based on these findings, it is warranted to have appropriate local exhaust ventilation place to ensure adequate health protection of nail shop technicians as well as customers. At the same time, greater policy interests are warranted in nail care business to protect health of both workers and customers.

• 한국안광학회지
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• 제14권4호
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• pp.65-69
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• 2009

목적: 최근 컴퓨터가 대량 보급되면서 VDT 증후군이 점차적으로 증가하고 있다. VDT 증후군은 VDT 작업자들에게 나타나는 근골격계 질환, 신경정신계 장애, 눈의 긴장, 피로, 자극과 충혈 등 안과적 증상을 포함한다. VDT 증후군의 환경요인으로는 전자파, 컴퓨터 화면의 크기, 밝기, 조명, 모니터 및 작업대의 높낮이, 작업시간, 작업의 종류, 작업자와 스크린과의 거리, 실내습도 및 온도, 사무실내의 공기오염, 환기 등이 있다. 본 연구에서는 근거리 시각 작업으로 인한 VDT 증후군에서 나타나는 주요 신체증상 및 신체 및 심리적으로 영향을 줄 수 있는 환경적 요인을 조사하였다. 방법: 연구대상자는 19세부터 28세사이의 남자 54명, 여자 66명으로 총 120명이었다. 책이나 문서 읽기, 컴퓨터 작업 등에 대한 근거리 작업을 할 때에 나타나는 신체적 증상과 육체적 불편함을 설문지를 이용하여 조사하였다. 조사항목에는 근업작업에 따른 주요 신체 증상과 눈의 자각 증상, 작업환경에 대한 만족도, 키보드, 마우스 사용시의 손목 통증 경험 등을 포함하였다. 결과: 장시간 컴퓨터, 문서, 전자기기를 사용할 때에 대부분(70%)이 신체적인 통증을 느끼는 것으로 나타났다. 통증부위는 주로 목과 허리(57.1%), 눈(45.2%), 두통(31%) 등이었다. 환경적 요인에서는 적절치 못한 조명으로 눈의 통증을 호소하는 사람들이 78.3%였다. 대부분의 증상은 '눈의 피로'(38.3%), '눈의 건조성'(31.9%), '눈의 흐릿함'(23.7%)이었다. 대상자들은 의자에 대한 불편함을 호소하였고 키보드, 마우스 사용 때 손목의 통증은 대부분 경험하였다. 결론: 전자기기, 문서 등을 이용할 때 빛, 공간, 자세, 작업대 등의 다양한 환경적 요인들이 조화롭지 못해 눈의 피로, 신체적인 피로감을 느낄 수 있다. 따라서 문서작업을 할 때에는 휴식시간에 대한 자기관리와 같은 예방법을 개발하여 눈의 피로를 줄여야 할 것이다. 또한 지속적인 연구를 통해 근골격계 질환 예방을 위해 최적의 시각적인 환경을 위한 인간공학적 디자인으로 작업환경을 바꾸어야 할 것이다.