• Korean Journal of Applied Biomechanics
• /
• v.31 no.2
• /
• pp.104-112
• /
• 2021

Objective: This study aimed to analyze the effects of consecutive whole body vibration through heel raise posture on the center of pressure and electromyography of anterior tibial muscle, lateral gastrocnemius and soleus muscles during single-leg stance. Method: The subjects of this study included 30 healthy males in their 20's, with the following inclusion criteria: no history of orthopaedic medical history, no participation in regular exercises, no history of whole body vibration exercise, and right leg being the dominant leg. The experimental procedure involved pretreatment measurement of eye open single-leg stance, application of whole body vibration for 30 seconds, post-treatment measurement (3 measurements in total). Static and dynamic movements have been measured over 2 separate experiments, with 72 hours gap between the experiments. Static movement involved maintaining single-leg heel raise posture for 30 seconds while applying whole body vibration, and dynamic movement involved heel raise (15 repetitions over 30 seconds) while applying whole body vibration. The strength of applied whole body vibration was 35 Hz frequency and 2~4 mm amplitude. Results: As the single-leg posture after static heel raise posture, mediolateral velocity of the center of pressure at post 2 and post 3 were significantly reduced compared to the pre-treatment measurement. In addition, the percentage for reference voluntary contraction in anterior tibial muscle and soleus and median frequency at anterior tibial muscle and lateral gastrocnemius muscle at post 3 were significantly decreased compared to the pre-treatment value. As the single-leg posture after dynamic heel raise posture, the mediolateral 95% edge frequency of the center of pressure and median frequency at anterior tibial muscle, lateral gastrocnemius muscle, and soleus muscle at post 3 were significantly reduced compared to the pre-treatment value. Conclusion: Acute whole body vibration via static and dynamic heel raise posture have positive effect on mediolateral posture control during single-leg stance.

• Korean Journal of Applied Biomechanics
• /
• v.32 no.3
• /
• pp.87-93
• /
• 2022

Objective: The purpose of this research was to investigate the age-related changes in whole-body motor variability during sit-to-stand (STS) task. It has been reported that children perform motor tasks less accurately with greater variability as compared to adults. However, it is still unknown how they utilize the abundant degrees of freedom and accomplish voluntary actions. Uncontrolled manifold (UCM) analysis has been used to partition motor variabilities into two independent variability components, task-relevant variability (V_ORT) and task-irrelevant variability (V_UCM). We investigated what differences exist between children and adults with respect to these two motor variability components in relation to motor development stages. Method: Ten 6-year-old children (height: 116.2 ± 4.3 cm, weight: 23.1 ± 3.9 kg, motor development assessment percentile score: 77.5 ± 18.6%), ten 10-year-old children (height: 138.7 ± 7.2 cm, weight: 35.8 ± 10.3 kg, motor development assessment percentile score: 73.9 ± 12.7%), and ten young adults (age: 23 ± 1.6 year-old, height: 164.3 ± 11.4 cm, weight: 60.8 ± 12.0 kg) participated in this study. Each participant performed STS ten times, and a motion capture system was used to capture the whole-body kinematics. Each segment centers of mass and the whole-body center of mass were calculated, and UCM analysis was used to quantify motor variabilities, V_ORT and V_UCM. One-way ANOVA was used for statistical analysis. Results: We found that children produced more motor variabilities in V_ORT and V_UCM in all three dimensions, anterior-posterior, medial-lateral, and vertical. As age increased, both, V_ORT and V_UCM significantly decreased (p<.05). Conclusion: The greater V_ORT found in children compared to adults indicates that the repeatability over repetitions improves through development, while the greater V_UCM found in children suggests that children better utilize the abundant degrees of freedom during STS compared to adults.

• Korean Journal of Exercise Nutrition
• /
• v.13 no.2
• /
• pp.147-153
• /
• 2009

Effect of whole body vibration exercise on intracerebral hemorrhage in rats. Intracerebral hemorrhage is one of the most devastating types of stroke. This disease is known to cause severe neurological damage and also has a very high mortality rate. In the present study, the effects of whole body vibration exercise on memory capability and apoptotic neuronal cell death in the hippocampal CA1 region following intracerebral hemorrhage in rats were investigated. Intracerebral hemorrhage was induced by injection of collagenase into the hippocampal CA1 region using a stereotaxic instrument. The rats were divided into 5 groups: the sham-operation group, the hemorrhage-induction group, the hemorrhage-induction and 8 Hz vibration exercise group, the hemorrhage-induction and 16 Hz vibration exercise group, and the hemorrhage-induction and 24 Hz vibration exercise group. The animals in the whole body vibration exercise groups received whole body vibration at 8 Hz, 16 Hz, and 24 Hz, respectively for 30 min once a day during 14 consecutive days. In the present results, the apoptotic neuronal cell death in the hippocampal CA1 region was significantly increased following induction of intracerebral hemorrhage, resulting in memory impairment. Whole body vibration exercise suppressed hemorrhage-induced apoptosis in the hippocampal CA1 region. This suppressive effect of whole body vibration exercise also alleviated hemorrhage-induced memory impairment. Here in this study, we have shown that whole body vibration exercise inhibited intracerebral hemorrhage-induced apoptotic neuronal cell death and thus facilitated recovery of brain function following intracerebral hemorrhage.

• Health and Mission
• /
• s.17
• /
• pp.24-27
• /
• 2009

지난 6.29일자 중앙일보에 보도에 의하면 창원파티마병원은 2005년에 이어 2008년에도 보건복지가족부 주관 전국의료기관평가서 최우수병원으로 선정되었다. 의료서비스 및 환자만족도 등 20개 부문 중 19개 부문에서 A등급을 받아 평가 대상 의료기관 중 최고의 성적을 거두었다. 창원파티마병원은 1969년 마산시 대성동에서 4개 진료과, 10개 병상의 마산파티마병원에서 출발하여 2002년 창원으로 이전, 진료를 시작한 이래 응급환자의 진료에 만전을 기하기 위해 응급의료센터를 개설하고, 보건복지가족부 지정 중증외상 및 응급뇌질환 특성화후보센터를 운영하고 있다. 말기 암 환자를 위한 호스피스 병동을 지역최초로 개설하였고, 전신 암 조기진단장비인 PET-CT 등 첨단 장비를 지속적으로 보강하여 보다 질 높은 의료서비스 제공을 위해 노력하고 있다. 또한 온생명 Care 캠페인을 통해 지구의 환경을 보전하기 위한 환경 운동을 전개하는 한편 다문화 가정 지원사업, 환자와 보호자를 위한 사랑의 음악회, 찾아가는 시민강좌 등 다양한 사회공헌 활동을 하고 있다.

• Proceedings of the KSME Conference
• /
• 2007.05a
• /
• pp.792-795
• /
• 2007

To quantify irregular body motions the time series analysis was applied to the gait study. The motions obtained from gait experiment are complex to exhibit nonlinear behaviors. The purpose of this study is to measure quantitatively the characteristics of the major six joints of the body during walking. The gait experiments were carried out for eighteen young males walking on a motor driven treadmill. Joint motions were captured using eight video cameras, and then three dimensional kinematics of the neck and the upper and lower extremities were computed by KWON 3D motion analysis software. The largest Lyapunov exponent was calculated from the time series to quantify stabilities of each joint. The results provides a data set of nonlinear dynamic characteristics for six joints engaged in normal walking.

• Journal of Yeungnam Medical Science
• /
• v.5 no.2
• /
• pp.1-8
• /
• 1988

위장관에서 분비되는 많은 국소호르몬 중에서 이미 널리 알려진 것을 외에 구조적인 공통점을 가진 새로운 group인 pancreatic polypeptide family에 대한 정보를 요약하여 보았다. PP, NPY 및 PYY는 그 구조적 유사점들에도 불구하고 분비되는 장소가 판이하여, PP는 위와 췌장의 국소호르몬으로서, NPY는 중추 및 말초신경의 신경충동전달체로서, 또 PYY는 하부위장관 점막에서부터 분비되어 전신 호르몬처럼 작용하고 있다. 이들 NPY와 PYY의 혈관수축작용과 혈압상승작용은 우리의 흥미를 끌기에 충분하다. 특히 PYY는 주로 하부장관 특히 결장과 직장의 분비조직에서 많이 발견된다는 점과 돼지의 뇌혈관을 수축시켰다는 점이 주목할 만한 것이다. 우리나라에는 많은 고혈압 환자가 있으며, 고혈압을 비롯한 여러가지 원인에 의한 뇌졸중(뇌출혈 포함) 환자도 많이 발생하고 있다. 민간의 속설에 의하면 출혈성 뇌졸증이 기온이 낮은 계절에 보다 자주 발생하는 경향이 있으며, 이른아침 화장실에서의 배변시 자주 발생한다고 한다. 물론 이러한 속설을 뒷받침할 만한 자료가 없으므로 학문적 견지에서의 신빙성 여부를 논할 가치는 없겠으나, 배변시 비교적 강한 자극을 받고 활발한 운동을 하는 결장과 직장에 PYY의 분비세포가 집결되어 있다는 점과 PYY의 뇌혈관수축작용 및 혈압 상승작용 등을 고려해 볼 때, 출혈성 뇌졸증과 PYY의 상관관계는 추구해볼 만한 사항이라 사료된다.

• Proceedings of the Korean Society of Computer Information Conference
• /
• 2020.07a
• /
• pp.467-468
• /
• 2020

현재 많은 곳에서 생체신호를 이용하여 보다 쾌적한 삶의 환경을 구축하려는 연구가 활발하게 진행되고 있으며 뇌-컴퓨터 인터페이스(Brain-Computer Interface, BCI)기술은 미래 손꼽히는 기술 중 하나로 보고 있다. 본 논문에서는 기존에 웹사이트나 애플리케이션으로 나와 있는 윷놀이 게임을 뇌전도(Electroencephologram, EEG)를 이용한 상호작용을 바탕으로 한 윷놀이 게임의 개발에 대해 기술하고 있다. 이 게임을 통해 마비 환자나 부득이하게 손을 사용하지 못하는 경우에도 게임을 진행할 수 있으며, 뇌신경 운동에도 도움이 될 것으로 기대하고 있다.

• Journal of Wellness
• /
• v.7 no.2
• /
• pp.101-111
• /
• 2012

The benefits and risks of whole body vibration (WBV) based acceleration training on the human body have been documented for many years. WBV training has been shown to increase muscular strength, explosive power, bone strength, performance, mobility, cardiovascular function, circulation and anabolic hormone level and so on. The purpose of this review is correct understanding and application of WBV training. Without proper understanding, rather, to apply WBV to the human body can be fatal harm, and therefore know that what is vibration and has advantages and disadvantages. If there is anything positive side there is bound to the negative aspects. In this regard, WBV training can have a positive impact on the already confirmed by several studies and also, there have been scientifically proven. But still we are part of a scientific approach that is acceptable even to keep in mind that you will always coexist. Once again, the effect of WBV with a physical stimulus that risk and should be remembered. In addition, given the momentum and how to exercise and well-being well aware that vibration exercise as a way to think of how not to be familiar with.

• Journal of the Korea Convergence Society
• /
• v.13 no.5
• /
• pp.313-325
• /
• 2022

The purpose of this study is to examine the changes in the elderly healthcare app market through text mining analysis and to present basic data for activating elderly healthcare apps. Data collection was conducted on Naver, Daum, blog web, and cafe. As for the research method, text mining, TF-IDF(Term frequency-inverse document frequency), emotional analysis, and semantic network analysis were conducted using Textom and Ucinet6, which are big data analysis programs. As a result of this study, a total of six categories were finally derived: resolving the healthcare app information gap, convergence healthcare technology, diffusion media, elderly healthcare app industry, social background, and content. In conclusion, in order for elderly healthcare apps to be accepted and utilized by the elderly, they must have a good diffusion infrastructure, and the effectiveness of healthcare apps must be maximized through the active introduction of convergence technology and content development that can be easily used by the elderly.

• Journal of the Korean Society for Precision Engineering
• /
• v.30 no.7
• /
• pp.762-768
• /
• 2013

This study investigated the effect of whole-body vibration on muscle function and muscular reaction in the knee joint. We recruited thirty healthy subjects and divided them into a training group, who experienced whole-body vibration, and a control group, who did not. The training group performed whole-body vibration exercises for 30 min per day, 3 days a week, for 8 weeks. We measured knee joint torque to estimate muscle strength and reaction, using BIODEX System 3. Knee joint peak torque and total work performed increased significantly in the training group, and muscle acceleration time decreased. These results suggest that stimulation by whole-body vibration can improve muscle strength and reaction by improving muscle tone and increasing blood temperature and flow speed in muscular fiber. Our results also indicate that 4 weeks of exercise with whole-body vibration is required to improve the reaction response, and six weeks to improve strength.