• 한국생산제조학회지
• /
• 제24권6호
• /
• pp.605-612
• /
• 2015

Three dimensional (3D) position determination and motion recognition using a 3D depth sensor camera are applied to a developed penguin-shaped robot, and its validity and closeness are investigated. The robot is equipped with an Asus Xtion Pro Live as a 3D depth camera, and a sound module. Using the skeleton information from the motion recognition data extracted from the camera, the robot is controlled so as to follow the typical three mode-reactions formed by the operator's gestures. In this study, the extraction of skeleton joint information using the 3D depth camera is introduced, and the tracking performance of the operator's motions is explained.

• 근관절건강학회지
• /
• 제16권2호
• /
• pp.125-134
• /
• 2009

Purpose: The purpose of the study was to compare the effects of the Rhy-Kwon exercise with motion beat music program to the Rhy-Kwon with ordinary beat music program on physical fitness and mood in employed women. Method: Total of 29 women who did not have any particular disease were randomly assigned either to a Rhy-Kwon with motion beat music group or to a Rhy-Kwon with ordinary beat music group. Nine subjects in each group completed posttest measures (physical fitness and mood) in 8 weeks. Results: After the 8 weeks of the study period, there were significant improvement in sargent jump and mood especially for the subscale of vigor in the Rhy-Kwon with motion beat music group compared to their counterparts. But no significant differences were found between the groups in other physical fitness measures. Conclusion: The results showed that Rhy-Kwon with motion beat music program would partially improve physical fitness and mood (vigor). Further studies are needed to confirm the effects of Rhy-Kwon with motion beat music program with various populations.

• 문화기술의 융합
• /
• 제1권2호
• /
• pp.77-83
• /
• 2015

본 연구의 목적은 견관절 유착성관절낭염 환자를 대상으로 진동자극 적용이 견관절 가동범위 증가에 미치는 치료적 효과를 알아보고자 하였다. 대상자는 관절가동 범위 제한을 가지고 있는 유착성 관절낭염 환자를 대상으로 무작위로 실험군 15명과 대조군 15명을 나누어 실험을 하였다. 각 운동군은 주3회 4주간 실시하였고, 각도계를 사용하여 견관절 굴곡, 외전, 외회전을 측정 하였다. 결과는 실험군과 대조군에서 4주 동안 어깨 굴곡, 외전 및 외부 회전운동 범위에서 통계적 유의성이 있었다. 따라서 진동 자극 적용은 유착성 관절낭염 환자의 가동범위를 개선하기 위한 효과적인 중재이다.

• 대한기계학회논문집A
• /
• 제38권6호
• /
• pp.585-592
• /
• 2014

본 논문에서는 도마뱀 로봇 설계를 위한 생체운동 모사 다물체 동역학 시뮬레이터가 개발되었다. 시뮬레이터에 사용된 다물체-기구 동역학 모델은 상용 소프트웨어인 RecurDyn 에 쿠반에놀 도마뱀의 모션 캡쳐 데이터와 Micro-CT 데이터를 적용하여 생성되었다. 다양한 도마뱀의 보행 운동 특성 해석을 위해서 생체운동 시뮬레이터는 궤적 생성모듈, 역기구학 모듈, 역동역학 모듈로 구성된다. 궤적생성 모듈은 도마뱀의 속도에 따른 척추운동과 발 궤적을 생성한다. 또한, 도마뱀 로봇 설계를 위해서 역기구학을 통한 관절 각도 계산과 그를 통한 역동역학 해석으로 이동속도에 대한 요구 조인트 구동력을 생성한다.

• PNF and Movement
• /
• 제18권3호
• /
• pp.323-331
• /
• 2020

Purpose: This study was conducted to determine the effects of motion taping on muscle activity and the WOMAC in a rehabilitation exercise program for elderly women with knee joint osteoarthritis. Methods: The subjects were 28 elderly women aged over 65 years with knee joint osteoarthritis. The subjects were divided into two groups: one experimental and one control group. During the study period, a total of 26 patients completed the experiment, with one drop each from the experimental group and control group. The experimental group applied motion taping and conducted a rehabilitation exercise program. The control group experienced a rehabilitation exercise program without motion taping. The rehabilitation exercise program consisted of warm-up exercises, maximum isometric exercises, the range of motion of the joints, and leg stretching exercises. The intervention was conducted three times a week for six weeks. To investigate the effects of the intervention, muscle activity and the WOMAC were measured. The WOMAC is a tool that can be used to evaluate the pain, stiffness, and physical function of osteoarthritis patients; it has 29 items in three areas. Results: The change in muscle activity according to the intervention showed a statistically significant increase in both the experimental group and control group. The WOMAC also showed statistically significant changes in terms of pain, stiffness, and physical function in both the experimental and control groups. The experimental group showed a greater functional improvement than the control group. Conclusion: For older women with osteoarthritis of the knee, a rehabilitation exercise program is a good intervention. When motion-taping is applied, it is considered to be an intervention program that can be expected to have a better effect on knee joint osteoarthritis.

• The Journal of Korean Physical Therapy
• /
• 제34권2호
• /
• pp.63-67
• /
• 2022

Purpose: The purpose of this study was to investigate the effect of assistance tools such as gym balls, wedges, and straps on lower extremity muscle activity and the increase in the range of motion made possible by the use of these tools. The subjects were divided into two groups: a group capable of deep-squatting (PS) and the second finding it impossible or having difficulty in performing such squats (IS). Methods: Twenty-three subjects participated in this study. Surface electromyography was used to measure the muscle activation of the rectus femoris (RF), vastus medialis (VM), and tibialis anterior (TA) muscles during deep squats, normal squats (NS), gym ball squats (GS), wedge squats (WS), and strap squats (SS). A motion analysis system was used to measure the range of motion of the knee joint during each of these exercises. Results: There was a significant difference in the RF muscle activity between the possible squat (PS) and the impossible squat (IS) groups in the GS, and there were significant differences in the RF and TA muscle activity between the groups in the WS. Both the PS group and the IS group showed a significant difference in the TA muscle activity depending on the tool used. There were also significant differences in the range of motion of the knee joints between the intervention methods using NS and those using the tools. Conclusion: In both groups, the muscle activity of the TA muscles was lower when GS, WS, and SS were performed compared to NS. In addition, compared to NS, the range of motion of the knee joint increased when the three tools were used. This study shows that the activity of the RF, VM, and TA muscles decreased and the range of motion of the knee joint increased during deep squats for both the PS and IS groups when tools were used.

• 한국운동역학회지
• /
• 제26권1호
• /
• pp.21-30
• /
• 2016

Objective: This study aimed to examine the characteristics of joint kinematics and synchronicity of rowing motion between elite and non-elite rowers. Methods: Two elite and two non-elite rowers performed rowing strokes (3 trials, 20 strokes in each trial) at three different stroke rates (20, 30, 40 stroke/min) on two stationary rowing ergometers. The rowing motions of the rowers were captured using a 3-dimensional motion analysis system (8-infrared camera VICON system, Oxford, UK). The range of motion (RoM) of the knee, hip, and elbow joints on the sagittal plane, the lead time ($T_{Lead}$) and the drive time $T_{Drive}$) for each joint, and the elapsed time for the knee joint to maintain a fully extended position ($T_{Knee}$) during the stroke were analyzed and compared between elite and non-elite rowers. Synchronicity of the rowing motion within and between groups was examined using coefficients of variation (CV) of the $T_{Drive}$ for each joint. Results: Regardless of the stroke rate, the RoM of all joints were greater for the elite than for non-elite rowers, except for the RoMs of the knee joint at 30 stroke/min and the elbow joint at 40 stroke/min (p < .05). Although the $T_{Lead}$ at all stroke rates were the same between the groups, the $T_{Drive}$ for each joint was shorter for the elite than for the non-elite rowers. During the drive phase, elite rowers kept the fully extended knee joint angle longer than the non-elite rowers (p < .05). The CV values of the TDrive within each group were smaller for the elite compared with non-elite rowers, except for the CV values of the hip at all stroke/min and elbow at 40 stroke/min. Conclusion: The elite, compared with non-elite, rowers seem to be able to perform more powerful and efficient rowing strokes with large RoM and a short $T_{Drive}$ with the same $T_{Lead}$.

• 산업융합연구
• /
• 제18권2호
• /
• pp.27-35
• /
• 2020

본 연구는 목뼈와 등뼈에 적용한 관절가동술이 전방머리자세를 가진 성인의 목통증, 목관절가동범위 및 균형에 미치는 영향을 알아보고자 실시되었다. 전방머리자세로 판명된 대학생 26명을 목뼈 관절가동술 그룹과 등뼈 관절가동술 그룹으로 13명 씩 무작위 배정하여 모든 대상자에게 각각 하루 10회, 1회당 30초 적용, 30초 휴식으로, 주 3회, 4주간 관절가동술을 적용한 후 변화를 비교하였다. 연구 결과, 통증과 관절가동범위에서 두 그룹 모두 유의한 효과가 있었고(p<.01), 그룹 간 비교에서는 유의한 차이가 없었다. 정적 균형의 그룹 내 변화에서 목뼈 관절가동술 그룹이 오른발 및 눈을 감았을 때 유의한 개선을 보였고(p<.05), 등뼈 관절가동술 그룹에서는 유의한 변화가 없었다(p<.05). 왼발 정적 균형은 두 그룹 모두 유의한 개선이 없었고(p<.05). 그룹 간 정적 균형의 비교에서도 유의한 차이가 없었다(p<.05). 동적 균형의 그룹 내 변화에서 목뼈 관절가동술 그룹이 앞쪽, 왼쪽, 오른쪽에서 유의한 개선을 보였고(p<.05), 등뼈 관절가동술 그룹이 앞쪽과 오른쪽에서 유의한 개선을 보였다(p<.05). 그룹 간 동적 균형에서는 왼쪽에서 유의한 차이가 나타났다(p<.05). 본 연구를 통하여 목뼈 및 등뼈 관절가동술은 전방머리자세 성인의 통증, 관절가동범위, 균형 능력에 대하여 유의한 효과가 있었다.

• 대한물리의학회지
• /
• 제13권1호
• /
• pp.49-62
• /
• 2018

PURPOSE: This study investigated the influence of a specific hip joint exercise program on the characteristics of chronic low back pain (LBP), hip joint range of motion (ROM), and performance level in amateur golfers with LBP. METHODS: The study included 28 adult male amateur golfers with LBP and reduced internal rotation (IR) of the lead side hip joint. Subjects were randomly assigned to an experimental (EG) (n=14) or control group (CG) (n=14). The Numerical Rating Scale score for pain, ROM of the hip joint and trunk rotation, performance parameters for golfing were evaluated. A specific exercise program designed to improve IR of the lead side hip joint was performed by the EG, but not the CG. Post-intervention evaluation was performed and the collected data were analyzed. RESULTS: After the intervention, the severity of LBP was significantly reduced (p<.05) and the IR ROM of the lead side hip joint was significantly increased (p<.01) in the EG. Moreover, the trunk rotation range was significantly increased in the EG (p<.01). The drive distance was significantly difference between the EG and CG (p<.05). CONCLUSION: A specific hip joint exercise program can help to reduce pain level and improve performance level in amateur golfers with LBP and increased IR ROM of the lead side hip joint. A significant increase in ROM of the lead side hip joint reduce LBP and was related to driving distance in the EG.

• Clinics in Shoulder and Elbow
• /
• 제26권4호
• /
• pp.373-379
• /
• 2023

Background: The purpose of this study was to determine the association between smoking and clinical outcomes of hook plate fixation for acute acromioclavicular (AC) joint injuries. Methods: This study retrospectively investigated 82 patients who underwent hook plate fixation for acute AC joint dislocation between March 2014 to June 2022. The patients were grouped by smoking status, with 49 in group N (nonsmokers) and 33 in group S (smokers). Functional scores and active range of motion were compared among the groups at the 1-year follow-up. Coracoclavicular distance (CCD) was measured, and difference with the uninjured side was compared at initial injury and 6 months after implant removal. Results: No significant differences were observed between the two groups in demographic factors such as age and sex, as well as parameters related to initial injury status, which included time from injury to surgery, the preoperative CCD difference value, and the Rockwood classification. However, the postoperative CCD difference was significantly higher in group S (3.1±2.6 mm) compared to group N (1.7±2.4 mm). Multivariate regression analysis indicated that smoking and the preoperative CCD difference independently contributed to an increase in the postoperative CCD difference. Despite the radiographic differences, the postoperative clinical outcome scores and active range of motion measurements were comparable between the groups. Conclusions: Smoking had a detrimental impact on ligament healing after hook plate fixation for acute AC joint dislocations. This finding emphasizes the importance of smoking cessation to optimize reduction maintenance after AC joint injury. Level of evidence: III.