• The Journal of Korean Physical Therapy
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• 제26권3호
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• pp.191-195
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• 2014

Purpose: The purpose of this study is to investigate whether types of sensory-stimuli cues in terms of visual, auditory, and visuoauditory cues can be affected to motor sequential learning in healthy adults, using serial reaction time task. Methods: Twenty four healthy subjects participated in this study, who were randomly allocated into three groups, in terms of visual-stimuli (VS) group, auditory-stimuli (AS) group, and visuoauditory-stimuli (VAS) group. In SRT task, eight Arabic numbers were adopted as presentational stimulus, which were composed of three different types of presentational modules, in terms of visual, auditory, and visuoauditory stimuli. On an experiment, all subjects performed total 3 sessions relevant to each stimulus module with a pause of 10 minutes for training and pre-/post-tests. At the pre- and post-tests, reaction time and accuracy were calculated. Results: In reaction time, significant differences were founded in terms of between-subjects, within-subjects, and interaction effect for group ${\times}$ repeated factor. In accuracy, no significant differences were observed in between-group and interaction effect for groups ${\times}$ repeated factor. However, a significant main effect of within-subjects was observed. In addition, a significant difference was showed in comparison of differences of changes between the pre- and post-test only in the reaction time among three groups. Conclusion: This study suggest that short-term sequential motor training on one day induced behavioral modification, such as speed and accuracy of motor response. In addition, we found that motor training using visual-stimuli cue showed better effect of motor skill acquisition, compared to auditory and visuoauditory-stimuli cues.

• 한국산학기술학회논문지
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• 제17권10호
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• pp.221-227
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• 2016

본 연구의 목적은 뇌성마비의 아동의 운동기술과 처리기술에 영향을 미치는 감각처리 요인을 증명하여 뇌성마비 아동을 위한 재활 치료 중재 시 임상적 고려 사항을 파악하고자 하였다. 서울시 소재 J 소아발달센터와 N 재활병원 병원에 내원 중인 뇌성마비 아동 36명을 대상으로 운동 및 처리기술 평가와 단축형 감각 프로파일 검사를 실시하였다. Pearson의 상관계수를 이용하여 뇌성마비 아동의 운동기술과 처리기술 및 감각처리능력과의 상관관계를 검증하였고, 위계적 다중회귀분석을 통해 운동기술과 처리기술에 영향을 주는 주된 감각처리 요인들을 검증하였다. 연구 결과, 운동기술은 감각처리 항목 중 청각여과하기, 활력부족/허약, 시/청각 민감성 항목과 유의미한 상관성을 나타내었다. 처리기술은 촉각민감성, 맛/냄새 민감성 항목과 유의미한 상관성을 나타내었다. 위계적 다중회귀 모형에서 운동기술에 영향을 주는 주요 요인은 움직임 민감성, 청각여과하기, 활력부족/허약 항목이었다. 처리기술에 영향을 주는 요인은 본 연구의 모형에서는 확증되지 않았다. 이번 연구는 뇌성마비 아동을 대상으로 일상생활 활동시 운동기술과 처리기술에 영향을 주는 감각처리 요인들의 관련성과 주요 요인을 검증하여 재활치료를 위한 기초자료를 제공하는데 그 의의가 있다. 추후 연구에서는 더 많은 뇌성마비 아동의 집단을 대상으로 연구가 진행되어 본 연구에서 확인되지 못한 처리기술에 영향을 주는 감각처리 요인들을 검증해볼 필요가 있다.

• 대한기계학회논문집 C: 기술과 교육
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• 제2권2호
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• pp.81-87
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• 2014

자동차정비직무의 "일과 학습의 연계"를 위해 현장에서 필요한 직무수행능력을 기준으로 자동 차정비 분야에 대한 교육훈련과 자격기준으로 활용할 수 있도록 자동차정비 현장전문가들이 국가직무 능력표준(NCS: National Competency Standards)을 개발하였다. 본 연구를 통하여 자동차정비직무의 국가 직무능력표준 개발영역과 직무체계를 수립하였고 직무능력단위별 수행준거, 지식, 기술, 태도 및 평가방법을 제시하였다. 또한 자동차정비직무의 능력단위별 직업기초능력의 영역별 수준을 제시하였으며 자격기준안을 제시하여 교육과 평가의 기준을 마련하였다.

• 대한물리의학회지
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• 제12권2호
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• pp.67-74
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• 2017

PURPOSE: The purpose of this study was to investigate the difference and relationship between sensory processing abilities, gross motor and fine motor capabilities in children with cerebral palsy. METHODS: 104 children with cerebral palsy participated in the study. Sensory processing abilities of the subjects were measured by Short Sensory Profile (SSP). Gross and fine motor abilities were each measured using the Gross Motor Function Classification System (GMFCS) and Manual Ability Classification System (MACS), respectively. RESULTS: There were significant correlations between SSP level and GMFCS (R=.72, p<.00) or MACS (R=.77, p<.00) levels. Significant differences were showed each gross motor (p=.01) and fine motor level (p=.00) among sensory processing level of children. In addition, sub-items of sensory processing as Tactile sensitivity, Movement sensitivity, Auditory filtering and Low energy/Weak were significantly were showed significant correlations gross motor and fine motor level (p=.01). Also, multiple regression result was showed that as MACS level and GMFCS level were higher, the SSP total score was higher all of participants (adjusted $R^2=.62$). CONCLUSION: Sensory processing abilities of children with cerebral palsy were related with gross motor and fine motor capabilities. Also gross motor and fine motor capabilities are as higher, the sensory processing skill was well of cerebral palsy.

• 가정과삶의질연구
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• 제31권1호
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• pp.11-27
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• 2013

The purpose of this study was to investigate the overall developmental characteristics of Korean children ages 0 to 8, and then explore specifically how children's social and emotional developmental levels are related to mothers' psychological states. This study was part of newly launched Boryung Baby Panel Study using web-based survey in 2011. The subjects were all mothers of 940 infants(0-2 years), 654 toddlers(3-5 years), and 484 school-age children(6-8 years) The mothers were asked to administer the web-based standardized developmental checklist for their child and fill out the questionnaires of psychological variables(life satisfaction, depression, parenting attitude, parenting efficacy, and parenting stress). The data was analyzed using descriptive analysis, t-test, and logistic regression for SPSS 20.0 windows. Major findings were as follows: 1. Infants(0 to 2) showed higher developmental level in cognition and fine motor skill domain compared to other domains. 2. Most toddlers(3 to 5) showed normal development in the most domain such as gross motor skill, fine motor skill, language, letter, number, self-help behavior. 3. In socio-emotional development domain, the ratio of risk or delay group were highest at both infant and toddler. 4. The 6-8 years old children that belong to risk group by the result of SDQ(emotion and behavior assessment) were also relatively high. 5. The relation of the children's socio-emotional developmental level and the mother's psychological variables were reciprocal. Based on these findings, the implications and the limitations of current study were discussed.

• 웰빙융합연구
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• 제5권2호
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• pp.15-19
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• 2022

Purpose: This pilot study aimed to clarify features of motor module during walking in exercise experts who experienced lately repeated training for sports skill. To identify motor modules, autoencoder machine learning algorithm was used, and modules were extracted from muscle activities of lower extremities. Research design, data and methodology: A total of 10 university students were participated. 5 students did not experience any sports training before, and 5 students did experience sports training more than 5 years. Eight muscle activities of dominant lower extremity were measured. After modules were extracted by autoencoder, the numbers of modules and spatial muscle weight values were compared between two groups. Results: There was no significant difference in the minimal number of motor modules that explain more than 90% of original data between groups. However, in similarity analysis, three motor modules were shown high similarity (r>0.8) while one module was shown low similarity (r<0.5). Conclusions: This study found not only common motor modules between exercise novice and expert during walking, but also found that a specific motor module, which would be associated with high motor control ability to distinguish the level of motor performance in the field of sports.

• Physical Therapy Rehabilitation Science
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• 제8권3호
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• pp.158-161
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• 2019

Objective: Attentional focus is one of the critical factors that has consistently been demonstrated to enhance motor performance and motor skill. Focusing attention on the inside of the body while engaging in a particular exercise is called internal focus (IF) and focus on the external environment is called external focus (EF). The purpose of this study was to identify effects of IF and EF of attention on postural balance in healthy school-aged children. Design: Cross-sectional study. Methods: Twenty-four healthy school-aged children participated in this study. School-aged children was defined as children ages 8-12 years old. They performed the one-legged standing with EF (focusing on the marker at the level of participants' chest and 150 cm away), IF (focusing the supporting feet), and control (no instruction) respectively. The order of the focus condition was randomly selected. The center of pressure (COP) range, distance, and velocity was measured to compare the effects of applying different attentional focuses in the three conditions. Results: The results of our study show that differences in COP range, distance, and velocity among groups were not significant between the different attentional focuses, although all variables of EF were smaller than IF. It is postulated that the reason for this may be that school school-aged children between 8-12 years old go through a transitional phase from IF to EF in effective motor learning. Conclusions: These findings reveal that the type of attentional focus did not have any effect on postural balance in healthy school-aged children.

• 대한통합의학회지
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• 제3권1호
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• pp.1-10
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• 2015

Purpose: This study investigated the relationships of handwriting legibility and perceptual-motor skills, and handwriting speed and perceptual-motor skills. And identified the predictors that most affect the handwriting of preschool children. Methods: Twenty-three typically developing preschool aged children (mean age: 68.61 months, SD=2.04) were selected through the Korean-Denver Developmental Screening Test-2(K-DDST-2). The children were tested with regard to handwriting legibility, visual perception, visual-motor integration and fine-motor coordination. Results: First, a significant relationship was not found among handwriting legibility, visual perception, visual-motor integration and fine-motor coordination. Second, a significant relationship was found among handwriting speed, visual perception and fine-motor coordination. Third, stepwise multiple regression analyses showed that general visual perception were significant predictors for handwriting speed. Conclusion: Occupational therapists should evaluate children's visual perception levels utilizing a standardized test, and focus on general visual perception in order to improve handwriting skill(speed). Also, occupational therapists are expected to play an important role in the management and treatment of children's handwriting skills.

• 대한감각통합치료학회지
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• 제7권2호
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• pp.77-90
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• 2009

목적: 감각통합중재의 효과에 대한 체계적인 고찰을 통하여 감각통합중재의 객관적인 근거기반을 제시하기 위하여 감각통합중재가 어떤 효과가 있는지 알아보고, 중재 결과 측정에 사용된 평가도구에 관하여 알아보고자 한다. 연구방법: 연구방법으로 체계적 고찰을 사용하였다. 사용된 데이터베이스는 MEDLINE/PubMed, PsycINFO, CINAHL, Cochrane Library, OTSeeker이었고, 검색어는 "effects of sensory integration", "sensory integration therapy"와 "sensory integration intervention"이었다. 최종적으로 분석에 사용된 논문은 11개로, 근거의 질적 수준은 수준 I과 수준 II, IV이었다. 분석내용으로는 감각 통합중재의 대상군과 중재방법, 중재결과 측정 영역에 따라 중재결과를 측정하는 도구 및 중재효과를 분석하였다. 결과: 1. 감각통합중재 대상으로는 자폐스펙트럼장애가 30.7%로 가장 많았으며, 전반적발달장애와 조산아가 각각 15.4%이었다. 2. 감각통합중재 방법으로는 J. Ayres에 의해 제시된 전통적인 방법이 36.4%로 가장 많이 사용되었고, 감각통합 중재의 효과를 알아보기 위하여 사용된 결과측정 영역은 행동의 문제를 해결하기 위한 영역이 40.63%로 가장 많았으며, 운동수행결과를 보기 위한 것이 28.13%, 감각기초 결과를 보기 위한 것이 25.0%이었다. 3. 감각통합중재 효과는 운동수행기술의 중재결과(66.7%)가 가장 많았으며, 그 다음으로는 감각기초를 위한 중재결과가 62.5%, 그리고 행동 문제 해결에 효과적인 경우가 61.5% 순으로 분석 되었다. 학습과 관련하여 쓰기기술에는 효과적이지 않은 것으로 나타났다. 결론: 감각통합중재는 운동수행기술과 감각기초능력 향상, 그리고 행동문제의 해결에 도움을 제공할 수 있는 치료적 접근방법이었으나 학습에 관하여는 효과적이지 않았다. 앞으로 감각통합중재의 일차적인 효과가 지속되어학습이나 일상생활에까지 영향을 미칠 수 있는가에 대한 연구문제를 가지고 연구방법 및 평가도구, 중재방법 등에 관한 연구가 필요할 것으로 생각된다.

• 산업기술연구
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• 제20권B호
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• pp.189-194
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• 2000

In this paper, we present a BLDC Motor control for needle positioning and velocity control in the industrial sewing machine. In the industrial sewing machine, the fast acceleration control is needed, especially for a person who has a skill in operation of sewing machine for more products. And it is also needed to have a less noise and vibration. But the system which is made in a low price has no feedback system for a current control. Therefore we propose the method of velocity pattern that has an acceleration of velocity and Anti-windup algorithm. By the experiment, we confirmed that these manner have a good performance for low noise, low vibration and fast acceleration in the industrial sewing machine.