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데드리프트 시 지지면에 따른 몸통 및 하지 근육의 활성도 비교
정세연,손상준,이형석,이정훈,백지원,양성빈,최원재,홍성균,송선해,이규창,Jeong, Seyeon,Son, Sangjun,Lee, Hyeongseok,Lee, Jeonghoon,Baek, Jiwon,Yang, Seongbin,Choi, Wonjae,Hong, SoungKyun,Song, Sunhae,Lee, GyuChang 대한고유수용성신경근촉진법학회 2022 PNF and Movement Vol.20 No.1
Purpose: The aim of this study was to compare trunk and lower extremity muscle activity during deadlift on stable - and unstable surfaces. Methods: Twenty healthy men participated in this study. The participants performed deadlift exercise on both a stable surface and an unstable surface. During the deadlift, the activities of the trunk and lower extremity muscle were collected by using electromyography. Results: The results showed that the electromyographic activity of the gluteus maximus significantly increased during deadlift on an unstable surface compared to on a stable surface (p <0.05). However, in the electromyographic activities of the rectus femoris, biceps femoris, and erector spinae, there were no significant differences (p >0.05). Conclusion: The finding that the electromyographic activity of the gluteus maximus increases significantly during deadlift on an unstable surface compared to stable one could be used to develop an efficient exercise program.
초과근로와 일과 삶의 균형과의 관계에서 직무중심 인력계획과 인사평가의 조절효과
이혜정(Lee Hyejeong),명순영(Myung Sunyoung),유규창(Yu Gyuchang) 한국노동연구원 2020 노동정책연구 Vol.20 No.4
초과근로와 일과 삶의 균형에 대한 관심이 증대되고 있다. 그리고 초과근로는 일과 삶의 균형에 부정적 영향을 미치는 것으로 일관되게 보고되고 있다. 이에 본 연구에서는 초과근로와 일과 삶의 균형과의 부적 관계를 조절할 수 있는 기업의 인사제도의 효과를 검증함으로써 초과근로와 관련된 기존의 탐색적 논의를 실증하는 것을 주요한 목적으로 한다. 이를 위해 초과근로와 일과 삶의 균형과의 관계를 검증하였다. 또한 직무중심 인력계획, 직무중심 인사평가의 조절효과를 검증하였다. 가설 검증을 위해 다양한 산업의 101개 기업의 인사담당자들에게는 기업 수준의 정보를 측정하였고, 기업 내 구성원들에게는 개인 수준의 변수를 측정하여 다수준 분석에 활용하였다. 분석결과, 초과근로는 일과 삶의 균형에 유의한 부적 영향을 미쳤으며 초과근로와 일과 삶의 균형과의 관계에서 직무중심 인력계획, 직무중심 인사평가의 조절효과 역시 유의하게 나타났다. 따라서 직무정보를 토대로 한 합리적이고 체계적인 인력 예측과 속인적 기준이 아닌 직무성과 중심의 인사평가가 초과근로와 일과 삶의 균형의 부적 관계를 완화시키는 것을 확인하였다. 본 연구는 초과근로와 일과 삶의 균형과의 관계에 대한 우리나라 기업의 실증 자료의 제시, 직무와 관련된 제도들의 중요성을 확인하였다는 점 등에서 이론적 의의를 갖는다. 실무적 의의로는 초과근로, 일과 삶의 균형의 두 개념에 대한 보다 체계적 이해를 통한 다양한 정책 및 제도의 필요성, 초과근로를 줄이기 위한 직무관리 차원에서의 방안, 직무중심 인사평가를 통해 평가의 공정성과 타당성을 높이기 위한 방안의 필요성을 제안하였다. There is a growing interest in overtime and work-life balance. And overtime is consistently reported as having a negative effect on the work-life balance. Thus the main purpose of this study is to examine the existing exploratory discussion related to overtime by verifying the effects of the firm"s HR practices that can mediate the negative relationship between overtime and work-life balance. To this end, the relationship between overtime and work-life balance was verified. Also, the moderating effects of job-based HRP, and job-based evaluation were verified. For the hypothesis test, organizational-level variables were measured for 101 firms in various industries and individual-level variables were measured for the members of the firms and used for HLM analysis. As a result, overtime had a significant negative effect on work-life balance, also a significant moderating effects of job-based HRP, and job-based evaluation in the relationship between overtime and work-life balance. Therefore, it was verified that rational and systematic HRP based on job information and job-based evaluation rather than person-based evaluation alleviated the negative relationship between overtime and work-life balance. The implication of this study is as follows. It has theoretical implication in that it presents empirical data of Korean firms on the relationship between overtime and work-life balance, and the importance of job-based practices. Practical implications are the need for various viewpoints of policies and practices through a more systematic understanding of the two concepts of overtime and work-life balance, job management to reduce overtime, and job-based evaluation to increase fairness and validity was proposed.
Tak, Sajin,Lee, Yongwoo,Choi, Wonjae,Lee, Gyuchang korean Academy of Physical Therapy Rehabilitation 2013 Physical therapy rehabilitation science Vol.2 No.1
Objective: Low back pain is a primary of source of dysfunction and economic costs. Gluteus medius muscle co-activation and activity pattern change caused the low back pain. Active release technique (ART) is a patented, non-invasive, soft tissue treatment process that both locates and breaks down the scar tissue and adhesions. The purpose of this study was to assess the effects on chronic low back pain using ART on gluteus medius so that suggest usable treatment method for treating chronic low back pain. Design: One group pretest-posttest design. Methods: Twelve patients with chronic low back pain were participated in this study. Subjects in ART group were received 2 times a week for 3 weeks treatments with either ART on gluteus medius muscle trigger points. Outcome measures were conducted by pain intensity with a pain visual analogue scale and pressure pain threshold on gluteus medius. Results: Completion of the intervention, the visual analogue scale was decreased in ART group (p<0.05). Also pressure pain threshold was decreased in ART group (p<0.05). Conclusions: Our results suggest that the response to ART may be usable to treat low back pain. ART was presented to reduce pain level of low back in people with chronic low back pain. Further study is required to management for low back pain due to gluteus medius and more ART study.
An, Seungheon,Jee, Youngju,Lee, Donggeon,Song, Sunhae,Lee, Gyuchang korean Academy of Physical Therapy Rehabilitation 2016 Physical therapy rehabilitation science Vol.5 No.1
Objective: The present study was to investigate the discrimination capacity of the Performance Oriented Mobility Assessment-Gait Scale (POMA-GS), for predicting falls in stroke survivors. Design: Retrospective cohort study. Methods: Data including the characteristics and number of falls of 52 chronic stroke patients from a rehabilitation center were collected. The number of falls each subject had experienced in the previous year were investigated through interviews. The subjects were divided into two groups depending on the number of falls: if falls occurred twice or more on the basis of the time of study after stroke, they were defined as the falls group and if there was no fall experience or one fall, they were defined as the non-falls group. The subjects were examined with the POMA-GS, and physical functions were examined using by the One Leg Stand Test (OLST), Sit to Stand Test (SST), 10-m Walk Test, Lower Extremity in Fugl-Meyer assessment (FM-LE), and Trunk Impairment Scale (TIS). The validity of POMA-GS for falls prediction was analyzed. Results: In the POMA-GS, which predicts falls in stroke survivors, the cut-off value was 8.5 (sensitivity 72%; specificity 65%) and the area under the curve was 0.75 (95% confidence interval: 0.60-0.90, p<0.007). There was a significant difference in the OLST, SST, FM-LE, and TIS between the subjects with POMA-GS >8.5 and the subjects with POMA-GS ${\leq}8.5$. Conclusions: The POMA-GS could be a useful tool in predicting falls in stroke survivors, as its discrimination capacity and predictive validity is proven satisfactory.
Musculoskeletal diseases of heavy industrial workers
Baek, Hyunjin,Song, Sunhae,Lee, Donggeon,Pyo, Seunghyeon,Shin, Doochul,Lee, Gyuchang korean Academy of Physical Therapy Rehabilitation 2017 Physical therapy rehabilitation science Vol.1 No.1
Objective: The purpose of this study was to investigate the musculoskeletal diseases (MSDs) that occur in heavy industrial workers according to the occupational category, prevalence, environment, and number of physical therapy visits. Design: Retrospective cohort study. Methods: For this study, data was collected of workers who were engaged in heavy industry in Korea and who visited the company physicians and received physical therapy in 2016. Data was collected from 855 subjects and was analyzed. With the data collected, analysis of the type and prevalence of MSDs and the number of physical therapy visits that have occurred according to the occupational category and environment was performed. Results: The most common MSDs were lumbar sprains and spasms (31.1%), and shoulder sprain and spasm (19.4%). In addition, the most common type of MSDs according to the occupational category and environment (occupational type) were lumbar sprain and spasms in 11 occupations, including white collar workers, and in milling, inspection, crane operation, and finishing jobs, shoulder muscle sprain and strain were the most common disorders. Also, the prevalence of MSDs according to occupational category and environment (occupational type) was the highest in workers involved with welding, which was 29.7%. Conclusions: Through this study, the type and prevalence of MSDs according to the occupational category and environment of heavy industrial workers have been confirmed. Further studies are necessary to study the future types of the work patterns of industrial workers and to develop a system for preventing and managing MSDs that may occur.