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운동재활프로그램 적용이 남자 성인의 자세교정에 미치는 영향 : 단일사례연구
이봉현(Bong-Hyeon Lee),김성택(Seong-Taek Kim) 한국운동재활복지협회 2020 운동재활·복지 Vol.1 No.1
이 연구는 불균형적인 신체밸런스를 가진 남자 성인에게 운동재활프로그램을 적용하고, 운동재활프로그램 적용으로 자세 교정되는 것을 확인함으써, 자세교정을 위한 운동재활프로그램 개발 및 스포츠 재활 교육에 데이터를 제공하는 것에 목적을 둔다. 이 연구의 목적을 달성하기 위해 D시에 있는 30대 남자 직장인으로 신체불균형과 통증이 있으며, 연구목적에 동의한 성인 1명을 연구대상자로 선정하였다. 이 연구를 수행하기 위해 자세분석 장비인 Body Style을 사용하여 연구대상자의 앞면, 옆면, 뒷면 그리고 다리 분석하였다. 운동재활프로그램은 3단계로 구분하여 진행하였고, 주 1∼2회씩, 1회 60분씩 10회로 대상자의 컨디션에 따라 강도와 빈도를 조정하였다. 운동재활 프로그램을 적용 후 첫째, 앞면분석결과 어깨 높이, 골반 높이, 다리길이차이, 좌우밸런스가 개선되는 변화를 확인할 수 있었다. 둘째, 옆면분석결과 전방 머리 기울기와 상체 기울기가 개선되었음을 보여주었고, 골반 전·후 기울기 방향은 전향으로 증가하였으나 정상 등급에 포함되었다. 셋째, 뒷면분석결과 견갑골좌·우 높이와 척추휨이 개선되었다. 넷째, 운동재활 프로그램을 통하여 구부러진 다리와 종골 각도가 개선에 효과적인 것으로 나타났다. 결론적으로, 운동재활 프로그램이 자세 교정에 긍정적인 효과가 있음을 보여주었다. This study aims to apply an exercise rehabilitation program to salaried employees who have improper body postures and investigate the program’s effect on posture correction and to provide base data that can help the development of an exercise program and educational guidance related to sports and rehabilitation. To achieve the aim of this study, an individual with body imbalance and pain was selected from salaried employees in their thirties of B company in Gyeongsan, Gyeongbuk Province, and 1 adult who agreed to self-selection was taken as the subject of study. To conduct this study, Body Style, a posture measurement device, was used to perform front analysis (shoulder height, pelvis height, leg length discrepancy, bowed legs, center of pressure), side analysis (forward head posture, upper body tilt, pelvic inclination angle) and back analysis (angulus inferior scapulae, spinal curve, calcaneal angle). The exercise rehabilitation program, divided into three phases (posture recognition, correction exercise, Foam Roller SMR), was implemented 10 times over 8 weeks, 60 minutes each time. Every week, the intensity and frequency were adjusted gradually. As a result, changes in posture correction are as follows. First, after the exercise rehabilitation program was implemented, it was shown that shoulder height, pelvis height, leg length discrepancy, and center of pressure improved on the front of the body. Second, after the exercise rehabilitation program was implemented, it was shown that forward head posture and upper body tilt improved on the sides of the body. The pelvic inclination angle increased, but it falls under A-3, which is a normal grade. Third, after the exercise rehabilitation program was implemented, it was shown that angulus inferior scapulae and spinal curve improved on the back of the body. Fourth, after the exercise rehabilitation program was implemented, it was shown that bowed legs and calcaneal angle improved. In conclusion, the results collectively showed that the exercise rehabilitation program had a positive impact on salaried workers’ posture correction.
김찬중(Kim, Chan-Jung),이봉현(Lee, Bong-Hyun),전현철(Jeon, Hyun-Cheol),조현호(Jo, Hyeon-Ho),강연준(Kang, Yeon-June) 한국소음진동공학회 2012 한국소음진동공학회 논문집 Vol.22 No.1
This paper investigates the prediction of the dynamic strain response using acceleration response only. Two methods are proposed for the strain prediction; one is based on beam theory and the other is calculated by the frequency response function between acceleration and strain. First, it is estimated the dynamics of the simple notched beam, including the non-linearity, through the uni-axial vibration testing. Then, the dynamic strain response is predicted under two different methods using acceleration response. The validation of proposed methods is conducted by the comparison between measured strain and predicted values. The comparison reveals that the proposed method based on the FRF between acceleration and strain is more reliable one than that stemmed from beam theory and the maximum relative error is less than 8 %.
김찬중(Kim, Chan-Jung),이봉현(Lee, Bong-Hyun),전현철(Jeon, Hyun-Cheol),조현호(Jo, Hyeon-Ho),강연준(Kang, Yeon-June) 한국소음진동공학회 2012 한국소음진동공학회 논문집 Vol.22 No.2
It was previously suggested the design sensitivity analysis based on transmissibility function to identify the most sensitive response location over a small design modification. On the other hand, energy isoclines were used to predict the fatigue damage with acceleration response only. Both of previous studies commonly tackle the engineering problem using the acceleration response alone such that it may be possible to investigate the relationship between sensitivity analysis and accumulated fatigue damage. In this paper, it is suggested the novel method of vibration fatigue prediction using design sensitivity analysis to enhance the accuracy of predicted accumulated fatigue. Uni-axial vibration testing is performed with a simple notched specimen and the prediction of fatigue damage is conducted using accelerations measured at different locations. It can be concluded that the accuracy of predicted fatigue damage is proportional to the sensitivity index of the responsible location.