(A) study on the analysis of posture balance based on multi-parameter

김정래 Graduate School, Yonsei University 2011 국내박사

This research measured and analyzed multi-parameter based posture balance after 24hours of sleep deprivation. The correlation of multi-parameter was determined by measuring and analyzing muscle activity, somatosensory, vestibular, central nervous system, stability and BMI with different posture in circadian condition. Body movement were check every 2 hours of interval after 24 hours of sleep deprivation. 12 electrodes were used to check the movement of muscle of body. There were 13 subjects and average age was 25.5. Signals of vision, vestibular, somatosensory, central nervous system, stability, fall index, weight distribution, BMI is collected by using Treadmill, Cycle ergometer, force plate showing body motion to stay in balance. Comparing PO and PC, PC is evaluated as more influential factor in stability part. WDI seemed to be a statistical significance test and has big influential to posture balance. Looking at the time change of multi-parameter measured from physical sensory organ in PO balance posture, there was current of circadian change in vision, vestibular and stability. In the same posture measuring mean value by each method of measuring, mean value of vision and stability was almost same and there was decrease of mean value in vestibular and somatosensory and central nervous system and fall index showed big number of mean value. Looking at the time change of multi-parameter measured from physical sensory organ in PC balance posture, stability shown over 10% higher. By measuring each way of method in same posture, vestibular and stability shoed higher mean value. There is a significant difference between body position of hip and knee(A) to measured value of posture position for circadian in balanced condition. Shoulder movement decreased 4times but hip and knee(A) decreased 20 times loading more work on muscles increasing fatigue in walking posture. with change of measured value after sleep deprivation shoulder increases but knee(p) decreases and hip gradually decreased. There was statistical significance. In hips considering circadian posture position than other part of the body in walking posture. Muscle work decrease by some what from 10times and 100times in cycling posture, the overall muscle activity flows to negative current. At initial time and sleep deprivation shows that body works forward by biggest value in the neck. Therefore neck, hip, knee(A) part works forward than head, shoulder, knee(A) showing positive value in circadian condition. There is a pattern difference of movement of body in 24 hours of sleep deprivation. Movement of neck, shoulder, hip and leg is influential while opening the eyes and closing the eyes were confirmed. There is a need to check movement of body in many conditions after 36 hours of sleep deprivation and loading heavy body workage to measure the ability to control lung and body.

KAYAK PADDLING EXERCISE FOR GENERAL HEALTH IN COMMUNITY-DWELLING ELDERLY : STUDY 1. THE EFFECTS OF KAYAK PADDLING EXERCISE ON MUSCLE PERFORMANCE, COGNITIVE FUNCTION AND POSTURAL BALANCE IN COMMUNITY-DWELLING ELDERLY / STUDY 2. THE EFFECTS OF KAYAK PADDLING EXERCISE WITH VIRTUAL REALITY ON MUSCLE PER

최원재 삼육대학교 일반대학원 2015 국내박사

STUDY 1. The aim of this research was to determine whether sitting balance training using kayak paddling would improve muscle performance, cognitive function, and postural balance in community-dwelling elderly. Fifty-six individuals over 65 years old participated in this study. Subjects were randomly allocated to two groups; the kayak paddling group (KPG, n=29) and control group (CG, n=27), respectively. Individuals in the KPG performed sitting balance training via kayak paddling for 60 min two times a week for six weeks using five types of exercise protocols. Each exercise protocol was composed of four or five motions. The CG was instructed to exercise at home. The kayak paddling exercise was performed to a rhythmical music for motivation. The outcomes measured were muscle performance (arm curl test, handgrip strength), cognitive function (Montreal cognitive assessment, MoCA), and balance (timed up and go test, functional reach test, and Berg balance scale). The results of this study can be summarized as follows: all the variables showed significant improvement in the KPG (p<0.05). Overall, the parameters showed significant improvements in the KPG compared with the CG (p<0.05), except for the Berg balance scale scores. Therefore, the results of this study suggest that balance training using kayak paddling might be beneficial for community-dwelling elderly in terms of improving muscle performance, cognitive function, and postural balance. STUDY 2. The aim of the present study was to establish whether kayak paddling exercise with virtual reality would improve muscle performance, cognitive function, and postural balance in community-dwelling elderly. Fifty-seven subjects were enrolled in this study. Subjects were randomly allocated to two groups (virtual kayak training group: 29, control group: 28). Participants in the virtual kayak paddling group performed paddling exercise in a virtual environment for 60 min two times a week for 6 weeks, including warm-up and cool-down exercises. The kayak paddling exercise was performed while looking at a screen displaying real-world video recordings. Subjects in the control group were instructed to exercise at home. The variables measured before training included upper limbs muscle strength, cognitive function, and postural balance. The post-test was performed in the same manner as the pre-test. The two groups were well matched with respect to general characteristics at baseline. In this study, the virtual kayak paddling group performed significantly better than the control group. Thus, the overall outcomes such as muscle performance (arm curl test and handgrip strength test, p<0.001), cognitive function (Montreal cognitive assessment and general practitioner assessment of cognition, p<0.05), and postural balance (static and dynamic postural balance, p<0.05) were significantly improved in this group. Furthermore, significant differences were observed between the groups. The virtual kayak paddling group was better than the control group in terms of muscle performance (arm curl test and handgrip strength test, p<0.05), cognitive function (Montreal cognitive assessment, general practitioner assessment of cognition, p<0.05), and postural balance (static and dynamic, p<0.05). Our findings indicate that kayak paddling exercise with virtual reality utilizing real-world video recordings might be beneficial to for improving muscle performance, cognitive function, and postural balance in community-dwelling elderly.

척추 및 골반 변형을 교정하기 위한 맞춤형 운동 재활 시스템 개발

정지용 전북대학교 일반대학원 2016 국내박사

Spine and pelvis plays a very important role to keep balance and correct posture. However, congenital or acquired spine and pelvic deformity may cause low back pain, scoliosis, pelvic asymmetry, and leg length discrepancy, and it affect negatively on postural balance. Although, with the increase in demand generalized rehabilitation exercise devices for solving problems are being developed, personalized exercise rehabilitation system to provide 3-dimensional personalized exercise based on the results of clinical evaluation of patients has not been studied until now. Therefore, in this study, biomechanical characteristics of patients with spine and pelvic deformity were evaluated by measuring pelvic inclination angle, body and planter pressure, and trunk muscle activities in static and dynamic sitting conditions. And then, based on the results of clinical evaluation, personalized exercise rehabilitation system was developed to treat spine and pelvic deformity and improve postural imbalance. In addition, clinical test for verifying the effectiveness of manufactured system was conducted by comparing differences in postural balance patterns between before and after exercising. In the first study, postural balance patterns of patients with spine deformity were evaluated by assessing the inclination angles, body and plantar pressure, and trunk muscle activities in static and dynamic sitting condition. From the results of this study, it was confirmed that spine deformity cause postural imbalance with asymmetrical pelvic inclination angle, pressure distribution, and muscle activation patterns. In the second study, postural balance patterns of patients with spine and pelvic deformity were assessed by comparing the differences in inclination angles, body pressures, and trunk muscle activities among control group, patients with spine deformity group, patients with pelvic deformity group, and patients with spine and pelvic deformity group. It was concluded that asymmetrical postural balance has been associated with occurred area on spine and pelvic deformity. In the third study, personalized exercise rehabilitation system was manufactured based on the results in the clinical evaluation of patients with spine and pelvic deformity. This system was designed to provide the axial elongation, derotation, deflexion, facilitation, and stabilization for efficient exercise. To evaluate the clinical effectiveness of this system, changes in the inclination angles, body pressure distribution, and muscle activities were compared between initial, middle, and final test after performing personalized exercise. The results of this study showed that asymmetrical postural balance was improved as well as weak muscle was also strengthen relatively after performing exercise program using personalized exercise rehabilitation system. This study suggests that personalized exercise rehabilitation system and exercise program may help to prevent progression of deformity and recover abnormal postural balance of patients with spine and pelvic deformity.

8자 붕대 중재가 경직형 뇌성마비 아동의 앉은 자세 균형과 자세 정렬 및 기능적 균형에 미치는 영향

김준규 대구가톨릭대학교 의료과학대학원 2016 국내석사

The purpose of this study was compared to investigate the effects of sitting balance, postural alignment, and functional balance by using eight-bandage in spastic CP(cerebral palsy) children. Fourteen children were participated in this study(Intervention group=8, control group=6). The intervention group, using an eight-bandage trained the rehablitation 30 min per day for 3 weeks. The both acromion heights, the length between inferior angles of scapular, and PRT(Pediatric Reach Test) were measured for functional balance and Biorescue for the static and dynamic balance. The paired t-test and independent t-test revealed the differences between the groups(p< 0.05). The results of this study showed that both scapulars hight, PRT, and static balance were significantly associated(p<0.05). In conclusion, the eight-bandage intervention affects the sitting alignment, functional balance, and static-dynamic balance in spastic CP. Results support the effectiveness of using the eight-bandage for the rehabilitation to spastic diplegia form of CP can be considered for the postural alignment and balance. Key words : balance, cerebral palsy, eight-bandage

New COP Analysis Techniques for Postural Balance Evaluation

박장호 경희대학교 2011 국내석사

인간의 몸은 지탱하는 지지 면이 좁은데 비하여 무게중심(Center of Gravity)은 지지 면에서 위로 올라가 있기 때문에 평형을 유지하는 데는 불리한 직립 자세를 취한다. 신체의 평형을 유지하는 과정은 자세에 대한 정보가 시각, 전정기관, 고유수용체(Proprioceptor)들로부터 받아들여지면 중추신경계에서 종합하여 판단되고, 전신의 골격 근육 기관에서 근의 수축&#903;이완을 통 하여 목적에 맞게 조절된다. 이렇게 복잡한 감각피드백(Sensor Feedback)시스템이 작용하여 신체의 평형은 유지되며, 똑바로 서 있는 자세에서도 평형을 유지하기 위해서는 미세한 자세의 변화가 연속적으로 요구되기 때문에 신체는 끊임없이 동요하고 있다. 신체의 평형을 유지하는 능력의 저하를 보이는 척추질환환자, 보행재활환자, 어지럼증 환자, 시각&#903;청각 이상 환자 및 노인들에게서 낙상 사고가 빈번하게 발생하고 있으며 낙상사고는 단 순한 찰과상에서부터 생명을 위협하는 사고까지 초래하고 있어 평형유지능력의 객관적 진단이 가능한 체중밸런스와 중심동요 분석에 관한 연구의 필요성이 높아지고 있다. 신체의 평형유지능력에 관한 연구는 정적 자세에서의 자세의 유지성(Postural Steadiness)에 관한 특성을 다루는 정적 평형(Static Equilibrium)연구와 동적 자세에서의 자세의 안정성 (Postural Stability)을 다루는 동적 평형(Dynamic Equilibrium)연구로 분류할 수 있다. 하지 만, 동적 평형의 측정 및 분석은 시스템의 기계적인 메커니즘과 검사방법에 따른 변수가 많고 검사방법과 분석요소들을 표준화하는데 어려움이 많기 때문에 정적 평형에 관한 연구가 활발 히 진행되고 있다. 정적인 직립자세에서 압력중심(Center of Pressure)의 위치는 무게중심의 위치와 대체로 일 치되지만 몸은 지지 면에 무게중심이 일치되도록 움직이기 때문에 압력중심의 이동은 무게중 심의 이동보다 양이나 주파수가 더 크게 나타난다. 따라서 압력중심 이동의 기록을 이용한 신 체의 동요분석이 많은 분야에서 진행되고 있다. 본 연구에서는 정적인 직립자세를 취하고 있는 피검자의 압력중심을 실시간으로 측정하기 위 한 기구부와 센서 그리고 하드웨어 장치를 설계하고 구현하였다. 또한, 압력측정의 정확성을 높이기 위한 적절한 보정(Calibration)방법을 제안하였으며 하드웨어 장치와 연동하여 압력중 심을 측정하고 체중밸런스 및 중심동요를 분석하며, 그 결과를 제공하는 기능이 포함된 소프트 웨어 프로그램을 설계하고 구현하였다. 본 논문에서는 정적인 직립자세의 체중밸런스와 중심동요를 측정하고 분석하기 위한 기구 및 센서, 하드웨어 모듈, 보정작업, 체중밸런스와 중심동요의 분석 알고리즘을 포함한 사용자 관 리 프로그램을 제안하였다. 4개의 로드셀이 독립적으로 작동하도록 고안된 기구부는 휘어짐이 적은 구조와 각 로드셀을 위한 독립적인 발판을 사용하였으며, 피검자를 위한 지지대 및 대부분의 사람들이 어깨넓이로 직립하였을 때 측정 가능한 팔판의 위치를 반영하였다. 하지만, 휘어짐이 적은 강철 재료로 인 해 본체의 무게가 70kg이상 나가게 됨으로써, 이동 및 휴대가 어려워 졌으며, 복잡한 조립 구 조로 인하여 추후의 유지 보수에 어려움이 있다고 고려된다. 현재의 사양을 만족하면서, 이동 및 휴대가 용이하고 조립이 단순화된 기구설계가 필요하다. 센서로부터의 신호를 입력 받아 증폭과 A/D변환을 수행하는 하드웨어 모듈은 저전력으로 효 과적인 작동을 보였다. 하지만, 아날로그 증폭기에서 증폭된 신호를 A/D변환의 입력범위로 조 절하기 위해 아날로그 증폭기의 레퍼런스(Reference)전압을 가변저항을 이용하여 각각 조절 해야 하며, 이는 대량생산에 있어서 시간을 지연시키는 요소가 된다. 보정작업에서는 20kg과 60kg의 추를 이용하여 40kg의 압력에 대한 A/D변환된 수치를 하드 웨어 장치에 저장하도록 하였으며, 그 결과 계산되는 압력수치는 평균 26.8g의 오차가 발생 하였다. 이는, 체중밸런스 및 중심동요를 분석하는데 무리가 없을 만큼 오차가 적다고 고려된 다. 하지만, 보정작업 또한 보정작업을 수행하는 사람이 4개의 발판에 각각 20kg과 60kg의 추를 올려놓고 내려놓는 작업을 반복해야 하기 때문에 한 번의 보정작업을 완료하는데 많은 시간이 소요되며, 대량생산을 위해서는 자동으로 각 발판에 사용자가 원하는 압력을 가해줄 수 있는 장치가 필요하다. 본 시스템의 밸런스 검사는 1회의 검사에 약 3분의 시간이 수요되며, 그 결과로 약 70가지 의 분석 파라미터들을 제공하여 체중밸런스와 중심동요의 현상을 설명한다. 이는, 본 시스템이 사용될 가능성이 높은 개인/종합 병원의 진료방식을 고려할 때, 간략한 측정에 많은 정보전달 을 한다고 생각된다. 하지만, 본 시스템이 제공하는 파라미터들을 이용한 체중밸런스와 중심동 요에 관한 진단에는 무리가 있다. 이를 보완하기 위해, 앞으로의 연구에서는 많은 피실험을 통 해 기존의 분석 파라미터들의 표준이 되는 데이터들의 확립이 필수적이며, 시각/청각/중추신경 /하지근육 발달 정도 등의 의학적인 요인들과 분석 파라미터들 간의 관계를 규명할 수 있는 이론적인 연구가 수행되어야 한다. 또한, 기존의 눈 뜬 직립자세, 눈 감은 직립자세의 측정 외 에도 척추이상/현기증/뇌졸중/파킨슨병 등의 환자들에게 모두 적용될 수 있는 검사 프로토콜들 이 추가되어야 할 것이다. Practice, Effort and Specificity have been proved as the major principles for gait rehabilitation after neurological impairment. The best way to improve performance of a motor task is to execute that specific task again and again. Automated gait trainer can be a solution to assure the consistency of a task specific repetitive gait rehabilitation training with accuracy, from both the patient and therapist ends for a long training session. It can be used for providing a patient having paretic or artificial leg, with a natural gait-like movement. The main focus of this thesis is the design and development of a gait rehabilitation system based on person specific walking pattern simulation and biofeedback during the training session. It also covers the background research on role of rehabilitation after neurological impairments, conventional gait rehabilitation procedures in practice and postural control mechanism during gait. This work presents a novel mechatronic approach where kinematics and kinetics of human locomotion have been interpreted into an optimum motion algorithm for robot-enhanced gait rehabilitation. It covers the design goals and development of the system for simulating that motion algorithm. This system is composed of two personalized gait trajectory guided programmable foot-boards equipped with force sensors for monitoring the vertical ground reaction force map and generating the vi- sual feedback for patient. In our developed motion algorithm of foot-boards we have concentrated on adaptation of patient-specific true walking trajectory, determina- tion of variable velocity pattern along different degrees of freedom and time-division for simulating different phases of a complete gait cycle. Gait database, collected from disparate sources and previous gait-studies have been used for kinetic and kinematic analysis of human walking. We have modeled those data based on the previous researches done in this area and adopt them for our motion algorithm. A precise velocity pattern and time-division have been described along different axes so that patient’s biofeedback and postural stability in different walking phases can be recorded accordingly and motion-correction of the foot-boards can be done in consecutive cycles through iterative learning control algorithm with the help of mo- tion sensors. Replication of a true walking pattern, robust and compact mechanical design and acting in harmony with the patient’s successive improvement were the main concerns in developing this system.

게임기반 시각피드백 훈련 시 고령자의 자세 균형 효과 분석

이정원 전북대학교 일반대학원 2013 국내석사

In this study, we analyzed the effects of game-based visual feedback training on postural balance control in young adults and older adults. The first experiment was performed by young adults. 12 males (52%) and 11 females (47%) with a mean age of 22.5(standard deviation 1.2) years participated in the first experiment. We provided postural balance training for four weeks in fifth minute a day and three days a week using training system of postural balance based forceplate. The games of postural balance encouraged anterior, posterior, medial, lateral and multidirectional weight shifting, and provided visual feedback regarding postural balance. We evaluated the ability of postural balance using balance SD(Biodex, medicalscience Inc., USA) for the validation of game contents based visual feedback training program. The second experiment was performed by older adults in the same way. 11 females with a mean age of 65.8(standard deviation 1.1) years participated in the second experiment. The results of first experiment showed that postural stability significantly rose by 24.3% in eyes open and 32% in eyes closed(p<0.05). The limits of stability also rose 41% significantly(p<0.05). The results of second experiment showed that postural stability significantly rose by 24.6% in eyes open and 14% in eyes closed(p<0.05). The limits of stability rose 27.8% significantly(p<0.05). Our study indicates that postural balance training of visual feedback based game could be adapted for improving postural balance. Also, for application of this game-based visual feedback training in older adults, we could develope of various game contents for disease types and conduct quantitative analysis and data collection of postural balance in the aged.

Effectiveness of Spinal Stabilization Exercises on Dynamic Balance in Adults with Subacute and Chronic Low Back Pain: A Randomized Clinical Trial

Alshehre, Yousef ProQuest Dissertations & Theses Texas Woman's Univ 2019 해외박사(DDOD)

소속기관이 구독 중이 아닌 경우 오후 4시부터 익일 오전 9시까지 원문보기가 가능합니다.

Background: Dynamic balance deficits have been identified as significant impairments in patients with low back pain (LBP). Although studies on the effect of spinal stabilization exercises (SSEs) on postural control in patients with LBP has been encouraging, balance measures used in these studies primarily assessed static postural control and lacked dynamic components. The Y-Balance Test (YBT) is a functional test, which assesses dynamic balance, and has been used in clinical practice. Given that dynamic balance is a vital aspect of everyday life, it is important to routinely include a relatively quick and cost-effective balance test in physical therapy (PT) practice, and to incorporate an exercise program that is useful for maintaining and improving balance in LBP populations. However, there is a lack of evidence supporting the effectiveness of SSEs on improving dynamic balance. Purpose: To determine the effectiveness of SSEs on dynamic balance in adults with subacute and chronic LBP. Specifically, performance on the YBT was compared between participants with subacute and chronic LBP who received an SSE program and those who received a general exercise (GE) program. In addition, to examine whether or not the participants who received an SSE program would have greater improvement in pain intensity and disability level than those who received a GE program. Methods: Fifty-three participants who had LBP more than 6 months were recruited in the study, and 40 participants completed the 8-week intervention study. All eligible participants were assigned randomly into either an SSE group (n = 20, 38.8 ± 11.8 years old) or a GE group (n=20, 41.0 ± 13.3 years old), which consisted of flexibility and range-of-motion exercises. Three outcome measurements were collected in this study, including dynamic balance measured by the YBT, pain intensity measured by the Numeric Pain Rating Scale (NPRS), and disability level measured by the Modified Oswestry Low Back Pain Disability Questionnaire (OSW). The outcome measures were collected at baseline, and two weeks, four weeks, and eight weeks after intervention was initiated. Participants’ dynamic balance was measured using the YBT in the anterior (ANT), posteromedial (PM) and posterolateral (PL) reach directions. For each participant, the measured reach distances were normalized to their leg length. The normalized composite score was used for data analysis. All participants were asked to attend 1-2 supervised PT sessions for a total of 4-8 sessions, and to perform their assigned exercises at least five times per week at home in the first 4 weeks of the 8-week intervention. In the last 4 weeks, the participants performed exercises at home with no supervised PT sessions. Three separate 2 x 4 analyses of variance (ANOVAs) with repeated measures were used to determine any differences in the three outcome measures between groups. Follow-up analysis was performed if there was a significant interaction. Results: The statistical results revealed that there was a significant interaction of group by time for dynamic balance (p < 0.001), but not for the NPRS or OSW. Post-hoc analysis revealed that there was a significant difference between groups from two weeks (p = 0.002) compared to four weeks, with the SSE group demonstrating higher YBT composite scores than the GE group. However, there were no significant between-group differences from baseline to two weeks (p =0.098), and from 4 weeks to 8 weeks (p = 0.413). In addition, the results showed that all participants had a significant improvement in dynamic balance, pain intensity, and disability level over time.Conclusion: The results indicate that SSEs were more effective than GEs in improving dynamic balance, but not pain intensity nor disability level in adults with chronic LBP (CLBP), specifically, during the four weeks of supervised PT sessions with a home exercise program. SSEs may minimize faulty movement strategies and compensatory muscle contractions by properly coordinating abdominal and back musculature during functional tasks, which possibly led to better dynamic balance. However, GEs appeared to have an effect equivalent to that of SSEs after 8-week intervention, consisting of 4 weeks of supervised intervention and another 4 weeks of unsupervised intervention. In addition, all participants had reduction in pain intensity and disability level over eight weeks after the intervention. However, no differences were found between the two groups. Clinical relevance: The results of the study provide evidence for clinicians to include SSEs for improving dynamic balance in the management of patients with CLBP.

A Novel Wearable Imu-Based Assessment of Postural Stability

Lyu, Shubo The Pennsylvania State University ProQuest Dissert 2022 해외박사(DDOD)

소속기관이 구독 중이 아닌 경우 오후 4시부터 익일 오전 9시까지 원문보기가 가능합니다.

Balance and postural stability has been studied for decades, and recently these efforts have incorporated small-size, lightweight, and inexpensive devices that may be worn on the body inside or outside the laboratory. Generally speaking, these inertial measurement units (IMUs) contain three-direction accelerometers, gyroscopic sensors for sensing angular velocity, and magnetometers for measuring orientation. IMUs have been widely used in balance studies of the high fall-risk populations, such as the elderly, people who have chronic disease, and people with impaired balance. Pregnant women constitute another population with high fall risk, but their balance has not been studied substantially using IMUs. Instead, studies of balance in pregnant women have mostly been performed in the laboratory environment with force plate. However, there are more complicated and dynamic tasks of daily living that are best studied outside the laboratory. If balance were to be studied in pregnant women using IMUs, the location of the sensor may be a problem; the IMU sensor is usually placed on a belt, near the body's center of mass. Wearing a sensor on a waist belt, however, may cause discomfort for pregnant women. Thus, the main purpose of this dissertation is to explore an alternative way of using an IMU by placing it a case worn around the neck as a pendant and to test whether a pendant IMU is as sensitive to postural instability as one work on a belt.In the first study, the design of the pendant case was investigated by testing three different novel pendant cases that could contain an IMU. The three designs differed in their curvature and included: a flat case with curvature only at the edges, a slightly curved case, and a deeply curved case. We investigated the possibility that a free-swinging pendant would magnify postural instability and potentially be more sensitive to postural instability than a sensor attached to the body. In order to test this sensitivity, we had research participants perform three standing tasks: double-leg stance, tandem stance, and single-leg stance. Each standing task involved two vision conditions: eyes open and eyes closed. We assumed that in the double-leg stance with eyes open induced the least postural instability, while the single-leg stance with eyes closed induced the most. In the exploration phase of the pilot study, we found out that the pendant sensor with the slightly curved base was most sensitive to differences in stability across the different standing tasks.In the second study, we tested the sensitivity of the pendant sensor design identified in the first study to postural instability. We recruited 26 young healthy adults who wore the pendant sensor and an IMU placed on a waist belt during experiments. In order to induce instability, three types of standing tasks were considered: double-leg stance, tandem stance, and single-leg stance. Two vision conditions were also involved: eyes open and eyes closed in each standing task. We assumed that the tandem and single-leg standing would induce postural instability, and in the eyes closed condition the instability was more obvious. Thus, our hypothesis was that the pendant sensor would be more sensitive to postural instability.

EFFECTS OF GLUTEUS MEDIUS STRENGTHENING EXERCISE ON ANKLE MUSCLE ACTIVATION AND DYNAMIC BALANCE IN HEALTHY ADULTS

국경래 삼육대학교 일반대학원 2021 국내석사

The aim of this study was to investigate the effect of the gluteus medius muscle strengthening exercise on the ankle muscle activity and dynamic balance in healthy adults. Participants were randomly assigned to 15 subjects in the experimental group and 16 subjects in the control group. The experimental group performed the gluteus medius muscle strengthening exercise, and the control group had no intervention. The study period was conducted 3 times a week for 6 weeks. Surface EMG was used to measure changes in ankle muscle activity, and Y-balance test (YBT) and functional reach test (FRT) were used to measure dynamic balance. The results showed significant decrease in the ankle muscle activity of the peroneus longus in the experimental group compared to the control group (p<0.05). In addition, there were significant differences in ankle muscle activity of the peroneus longus between the two groups (p<0.05). In dynamic balance analysis, the experimental group showed significant improvements in the FRT and YBT values compared to the control group (p<0.05). Also, there was significant difference in the FRT values between the two groups (p<0.05), but there was no significant difference in the YBT value between the two groups. In conclusion, strengthening the gluteus medius muscle for 6 weeks had an effect on the decrease in the activity of the peroneus longus muscle and was effective in improving the dynamic balance. This study has clinical significance in that it suggested a variable that the gluteus medius muscle and peroneus longus muscle should be considered together to improve balance. In addition, further study is needed to perform the gluteus medius muscle strengthening exercise in subjects with gluteus medius weakness or ankle instability.

기능성 깔창의 발바닥 접촉 면적 정도가 정적균형에 미치는 영향

신주용 대구가톨릭대학교 대학원 2015 국내석사

The purpose of this study was to investigate to compare static posture balance according to different contact of functional insole. Thirteen healthy individuals participated and performed with three conditions ; 1) no contact, 2) partial contact, 3) full contact. COP(center of pressure) range, distance, velocity was used to measure static posture balance. The repeated one-way ANOVA was used to compare the COP range, distance, velocity and the level of significance was set at=0.05. The results showed that the COP sway were identified in partial contact, full contact insole decrease of postural sway than no contact(p<0.05). but COP sway in partial-full contact was not significant(p>0.05). therfore, effect of sensory input in functional insole was not useful. Although COP sway on partial-full contact insole was not significant in this study but This study showed sensory input using functional insole could increase static balance control. I would like to facilitate the process of knowledge translation in moving concepts beyond the domain of sport skills, and into the daily life.