• The Journal of Korean Physical Therapy
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• 제30권4호
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• pp.129-134
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• 2018

Purpose: This study aims to investigate the changes in pulmonary function, gait ability, and quality of life when NMES is applied along with CBE and to provide basic clinical data to be used in pulmonary rehabilitation guidelines for patients with COPD to treat patients with severe COPD. Methods: For this study, CBE and NMES of quadriceps femoris on both sides were applied to the experimental group (n=10), and only CBE was applied to the control group (n=10). For a pre-test, a 6-minute walk test was performed, and pulmonary function and health-related quality of life were measured. Moreover, an exercise program was applied to each group for 30 minutes per session, 5 times a week, for 6 weeks. After that, a post-test was conducted the same way as the pre-test. Results: In the within-group comparison, there were significant differences in forced expiratory volume in one second, 6-minute walk test and health-related quality of life between the experimental group and the control group (p<0.01)(p<0.05). In the between-group comparison, the experimental group showed an increase in forced expiratory volume in one second and 6-minute walk test (p<0.05) and showed a decline in health-related quality of life (p<0.05). Conclusion: The 6-weeks NMES program improved health-related quality in patients with severe COPD by increasing expiratory volume by reinforcing the function of quadriceps femoris. This finding implies that NMES could be an alternative mode for improving physical functions of patients with severe COPD, who cannot participate in a breathing exercise program or are reluctant to participate.

• 한국화재소방학회논문지
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• 제25권1호
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• pp.72-77
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• 2011

현대 도시는 수평적 토지이용의 제한, 지가 상숭, 인간 요구의 다양화 등으로 인하여 도시기능의 일부를 지하공간으로 흡수하고자 하는 노력이 증가하는 추세이다. 따라서 건축물의 지하층, 지하철 역사 등이 점차 대심도화 되어 지하공간에서 지상으로 피난에 대한 안전성 여부가 부각되고 있다. 그동안 계단에서 군집보행에 관한 연구는 내려가는 군집보행을 중심으로 진행되어 왔으며, 계단에서 올라가는 군집보행에 대한 연구는 거의 전무한 상황이다. 본 연구에서는한 방향 군집유통이 형성되는 지하철 역사 숭강장 내 계단에서 올라가는 군집의 밀도에 따른 보행속도를 직접 실촉하여 조사하였다. 올라가는 보행은 실측결과 경사도 $23^{\circ}$에서 관계식 V=0.638-0.0949p에 의해 보행속도가 결정되며, 이를 일본건축학회에서 제안하는 계단 경사도에 따른 평균보행속도를 근거로 환산하면 경사도 $30^{\circ}$에서는 V=0.597-0.1067p가 되는 것으로 분석되었다.

• 대한물리의학회지
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• 제12권2호
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• pp.53-57
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• 2017

PURPOSE: The purpose of study was to clear up the environmental risk factor that can be easily occurred unstability of hip during gait and one leg standing at various ramp angle. METHODS: Twenties healthy males of 69 subjects is participated in this study. Participants was measured activation on gluteus medius muscle during both conditions (walk across the ramp and one leg stand in the transverse direction) of seven different angle. The measured data were analyzed using one-way ANOVA to investigate the effect of muscle activation on the each condition. The statistical analyses were performed using SPSS ver. 18.0 and p-value less than .05 were considered significant for all cases. A post-hoc test was performed by Bonferoni method. RESULTS: The study showed that more muscle activities on gluteus medius is increased by increasing the ramp angle. Post-hoc analysis demonstrated that the peak and mean of muscle activity increased significantly with a ramp angle of $15^{\circ}$ and $25^{\circ}$ during gait and one-leg stand. CONCLUSION: According to the study results, impaired balance can be easily occurred when cross walk and one-leg stand on a ramp from higher than $15^{\circ}$, and highest risk was angle of $25^{\circ}$ or more. As a people with gluteus medius muscle weakness walks a ramp, the ramp angle has a cross relationship with the impaired balance. If people with gluteus medius weakness walk on the more than $10^{\circ}$ of ramp angle, they will need a lot of attention for prevent impaired balance.

• 한국전자통신학회논문지
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• 제11권2호
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• pp.237-244
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• 2016

보행자가 생활환경에서 겪을 수 있는 위험을 인지하기 위하여 감지하여야 하는 목표를 두 가지로 고려할 수 있다. 위험을 감지하기 위하여 보행자의 상태와 보행 환경 요인을 함께 인지하는 것이다. 생활 안전을 위하여 사물인터넷 기술이 좋은 기여를 할 수 있다. 본 연구는 보행자의 상태와 주변 환경 요인들에 대한 데이터 융합 처리를 이용하여 위험을 인지하는 방안을 제안하였다. 3축 가속도 센서를 이용하여 보행자의 걸음을 인식하고 이를 개인의 상태 추정에 활용하였으며, 조도 센서로부터의 측정값으로 보행환경을 추정하였다. 위험 요인들을 평가하고 융합 처리함으로써 보행자의 위험도를 산출하였다.

• 한국조사연구학회지:조사연구
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• 제12권3호
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• pp.63-94
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• 2011

세계적으로 보행에 대한 관심이 커지고 보행자 조사가 증가하고 있으나 보행자 조사의 방법론은 아직 보편적인 기준을 갖지 못하고 있다. 보행의 특성에 대한 이해 부족은 보행자 규모를 과소평가하고 보행의 중요성을 사회적으로 과소평가하는 결과를 낳았다. 이와 같은 상황에서 보행자 조사방법론의 국제표준 정립을 위해 지난 10여년간 Walk21과 Pedestrian Quality Needs 프로젝트가 주목할 만한 성과를 거두었다. 본 연구는 이러한 보행자 조사방법론의 국제표준 정립에서 제시된 지표체계와 측정모형을 제시하고 배경과 추진 과정의 거버넌스를 분석하였으며 주요 조사 사례들을 제시하였다. 이를 통해 국내의 보행자 조사가 현재 진행 중인 국제표준화 작업에 능동적으로 참여하는 데 기여하고자 한다.

• 한국운동역학회지
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• 제17권1호
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• pp.17-27
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• 2007

It is essential for gait analysis to know the distance information. The purpose of this study was to investigate the effects of start and finish distance on the gait variable during walking. Six adolescent participated in this study. Start condition was given by six conditions.: walking forward from (1) one step, (2) three steps, (3) five steps, (4) ten steps, (5) one step after standing walk, and (6) three steps after standing walk, before contacting the force plate. Stop condition was given by four conditions. : stop after (1) one step, (2) two steps, (3) three steps, and (4) ten steps, passing force plate. Repeated measured one-way ANOVA was utilized for data analysis, and the significant level was set at .05. The largest change from the difference of gait velocity exists between the variables of ground reaction force. There were no significant differences in spatio-temporal and posture(angle) variables, as well as ground reaction force variables with walking over the three steps. There were significant differences in gait velocity, knee angle at heel contact, vertical impulse and ankle angle at toe off in short distance.

• 한국건축시공학회지
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• 제10권6호
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• pp.87-96
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• 2010

최근 대형쇼핑몰이 들어서며 변화의 과정에서 과다하고, 원칙과 기준에서 벗어난 임대료 인상으로 많은 선의의 임차인들이 피해를 보는 경우도 다수 발생하고 있으며, 경쟁 입찰로 인한 임대시장의 교란을 초래하여 왜곡을 유발하고 있어 적정 임대료 산정에 대한 연구 분석이 시급히 요구되고 있는 실정이다. 이와 같은 상황으로 볼 때 현재 활용되고 있는 길별 기준가격과 주요 거점과의 관계, 보행량을 감안한 임대료를 산정한다면 앞으로 임대료 분쟁에 큰 도움이 될 수 있으리라 판단된다.

• 한국소음진동공학회:학술대회논문집
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• 한국소음진동공학회 2007년도 춘계학술대회논문집
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• pp.515-518
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• 2007

SAFRS(Spontaneous Acoustic Field Reproduction System) is a system to sense changes of surroundings and produce sounds which can go well with environment elements sensed by the system in to the space. The sounds were judged by individual evaluation and, the classification of the preferred sounds according to the mood of the space was suggested in the former study. Effectiveness of SAFRS with field application was validated by prior studies which dealt with researching acoustic environment, evaluating images of sounds, and rating environment with existence and nonexistence of sound resources such as fountains and the system after applied in D university. In this study, for more effective field application of SAFRS, research for the acoustic environment around sound resources and subjective evaluation of the preference of the sounds from the resources were made and it was considered that the results of the experiments should be primary information to propose proper sound level to be offered by the system. The results of the study are as follows; 1) It was considered that the ambience of the center road was dependent upon produced sounds by the system and water sounds of the fountain and that of walk way was mostly dependent upon produced sounds. 2) The results of the subjective evaluation showed that the distance from sound resources was suggestive; the more distant from produced sounds the less full and clear the sounds, the less distant from the sounds of water the more delight and idyllic ambience, and the less distant from the forest the more idyllic ambient and diversity. 3) The results upwards were telling that an average value of six elements for the evaluation was even at the place set back 10.2m from center road and walk way. And harmony of all sounds of the place should be considered to propose suitable sound level of SAFRS.

• 한국소음진동공학회논문집
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• 제17권6호
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• pp.547-552
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• 2007

SAFRS(spontaneous acoustic field reproduction system) is a system to sense changes of surroundings and produce sounds which can go well with environment elements sensed by the system in to the space. The sounds were judged by individual evaluation and, the classification of the preferred sounds according to the mood of the space was suggested in the former study. Effectiveness of SAFRS with field application was validated by prior studies which dealt with researching acoustic environment, evaluating images of sounds, and rating environment with existence and nonexistence of sound resources such as fountains and the system after applied in D university. In this study, for more effective field application of SAFRS, research for the acoustic environment around sound resources and subjective evaluation of the preference of the sounds from the resources were made and it was considered that the results of the experiments should be primary information to propose proper sound level to be offered by the system. The results of the study are as follows; 1) It was considered that the ambience of the center road was dependent upon produced sounds by the system and water sounds of the fountain and that of walk way was mostly dependent upon produced sounds. 2) The results of the subjective evaluation showed that the distance from sound resources was suggestive; the more distant from produced sounds the less full and clear the sounds, the less distant from the sounds of water the more delight and idyllic ambience, and the less distant from the forest the more idyllic ambient and diversity. 3) The results upwards were telling that an average value of six elements for the evaluation was even at the place set back 10.2m from center road and walk way. And harmony of all sounds of the place should be considered to propose suitable sound level of SAFRS.

• 대한물리의학회지
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• 제16권4호
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• pp.13-21
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• 2021

PURPOSE: This study examined the effects of action observational training with acoustic stimulation (AOTA) on the balance and gait ability in stroke patients. METHODS: Forty-five chronic stroke patients were divided into three groups. The AOTA group (n = 15) received training via a video that showed a normal gait with the sound of footsteps. The action observation training (AOT) group (n = 15) received AOT without acoustic stimulation. The control group (n = 15) received physical training. Each intervention was applied once per day, three times per week for six weeks. The participants in the AOTA and AOT groups had five minutes of AOT. The participants in the all group had 20 minutes of physical training. All participants were measured using the Berg Balance Scale, the Timed Up and Go Test, the Functional Reaching Test, 10 Meter Walk Test, six Minute Walk Test, and Dynamic Gait Index. The collected data were analyzed using SPSS version 20.0 for Windows. The between- and within-group comparisons were analyzed using the one-way analysis of variance (ANOVA) test and a paired t-test, respectively. For all statistical analyses, the significance level was set to .05. RESULTS: The one-way ANOVA test identified significant differences among the measurement results of the three groups (p < .05). Post hoc analyses indicated the AOTA group to undergo more significant balance and gait changes than the control group (p < .05). CONCLUSION: The gait and balance abilities could be improved effectively for patients with stroke when action observation training and acoustic stimulation were applied simultaneously.