• 한국운동역학회지
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• 제26권3호
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• pp.285-292
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• 2016

Objective: This study collected data on muscle fatigue and ground reaction force during walking to provide a basis for development of custom-fitted outdoor walking shoes. The study analyzed an upright body exercise program using spine stabilization technique to determine the effect on foot plantar pressure in archers, demonstrate the effectiveness of upright body exercise, and develop a new, effective, and efficient training program. Method: A 12-week upright body exercise program was evaluated for the effect on plantar pressure in archers. Ten prize-winning archers (3 men, 7 women) in B metropolitan city, each with ${\geq}10years$ of experience, were given an explanation of the content and purpose of the program, and provided informed consent. Upright body exercise was performed 3 times a week for 12 weeks. A resistive pressure sensor was used to measure foot plantar pressure distribution and analyze quantitative information on variation in postural stability and weight shifting in dynamic balance during shooting, as well as plantar pressure in static balance with the eyes open and closed. Results: There were no significant differences in foot plantar pressure before and after participation in the exercise program. There was no statistically significant difference in foot plantar pressure in static balance with the eyes open or closed, or in foot plantar pressure in dynamic balance during shooting. Conclusion: An upright body exercise program had positive effects on foot plantar pressure in static and dynamic balance in archers by reducing body sway and physical imbalance during shooting and with eyes closed. This program is expected to help archers improve their posture and psychological state, and thereby improve performance.

• 국제물리치료학회지
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• 제4권2호
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• pp.595-599
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• 2013

The purpose of this study is to identify the bridge exercise posture for the efficient exercise by comparing the muscle activity of the lower limbs according to the changes in muscle length because of knee angle in bridge exercise. The subjects of this study were 9 randomly selected males in their 20s living in D city from those who satisfied inclusion criteria. The measured muscles were Vastus medialis oblique, Vastus lateralis, Semitendinosus, Biceps femoris, Gluteus maximus, Gluteus medius, Tensor faciae latae, and Adductor longus. Data were analyzed through paired comparison test. In the result, ST, BF, and TFL muscle activities were high when knee joint flexion angle was $90^{\circ}$ Although in most cases higher muscle activity was shown at $90^{\circ}$ than $60^{\circ}$ there was no statistical significance. Interestingly, it was lower at $90^{\circ}$ than $60^{\circ}$ in VL. In ST, BF, and TFL, it was significantly higher at $90^{\circ}$ than $60^{\circ}$ (p<.05). Conclusively, knee angles in bridge exercise may affect the muscle activity, and in particular when the activity of two joint muscles such as semimenbranosus muscle, biceps femoris muscle, and tensor fasciae latae muscle increase as the angle gets higher. Therefore, it is considered that this study will provide helpful tips to develop muscular strength enforcement program for the patients with damages in the lower limbs through bridge exercise in clinical situations.

• 대한정형도수물리치료학회지
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• 제19권2호
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• pp.61-66
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• 2013

Background: This study tried to identify the bridge exercise posture for efficient exercise application by comparing muscle activity of buttocks and thighs according to internal-external rotation and pronation & supination in bridge exercise. Method: Nine males in their 20s living in D city were randomly selected as subjects. Muscles such as vastus medialis oblique (VMO), vastus lateralis (VL), semitendinosus (ST), biceps femoris (BF), gluteus maximus (GMAX), gluteus medius (GMED), tensor fasciae latae(TFL), and adductor longus (ADL) were measured using eight channel surface electromyogram (MyoSystem 1400A, Noraxon, USA) to measure muscle activity. Statistics process was performed through paired t test. Results: In the changes in electromyogram signals according to internal-external rotations according to internal-external rotation of shinbones, in most cases muscle activity was higher in external rotation than in internal rotation, but there was no statistical significance (p>.05). In particular, it was lower in TFL and ADL. There was no statistical significance in the comparison between two groups (p>.05). In the changes in electromyogram signals according to internal-external rotations according to pronation & supination of thighs, GMED showed significantly higher value in supination than in pronation (p>.05), and in ADL pronation is significantly higher than supination (p<.05). Conclusion: In internal-external rotation of shinbone and pronation & supination of thighs in bridge exercise, changes in muscle length can make effects on muscle activity of buttocks and thighs. Therefore, muscle strength enforcement program on buttocks and thighs through bridge exercise can make effects on patients with lower limb functional damages in clinical situations.

• 디지털콘텐츠학회 논문지
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• 제19권7호
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• pp.1225-1235
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• 2018

본 연구에서는 신체활동 모니터링이 가능한 스마트 의류와 연동되는 스마트 피트니스 콘텐츠와 관련하여 실용성을 갖춘 소비자 맞춤형 스마트 콘텐츠 개발 기획 연구의 일환으로, 타겟소비자의 잠재적 수요를 반영한 셀프트레이닝 지원용 스마트 피트니스 콘텐츠 개발의 구체적인 구현방향을 탐색하였다. 그 결과, 스마트 피트니스 콘텐츠에 대한 잠재적 수요는 시간 경과의 순서에 따라 '운동시작 전'의 단계에서는 '사용 접근성', '흥미유도', '다각적 스토리라인'의 범주어가 도출되었고, '운동수행 중'의 단계에서는 '실시간 음성코칭', '정확한 운동자세 모니터링', '개인 맞춤형 운동처방'이 도출되었다.'운동 직후'의 단계에서는 '실질적 보상제도', '등급제도', '체형변화 모니터링', '일상생활 모니터링'이 도출되었고, '다음 운동으로 연결'의 단계에서는 '동기유발', '높은 지속성' 이 도출되었다.

• 대한정형도수물리치료학회지
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• 제15권1호
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• pp.49-57
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• 2009

Purpose : To evaluate the effects hip abductor strengthening exercise using elastic band on static balance. Methods : The subjects consisted of twenty healthy people. The subjects were divided into two group. The control group(n=10) received no exercise and/or stimulation. The elastic band strengthening exercise(E/E) group(n=10) performed hip abductor for strengthening exercise using elastic band. E/E group were accomplished during 6weeks(3day/week, 30-40min/day). All tests were completed before and after experiment. The static balance ability was measured by normal standing when eye open and close on GOOD BALANCE System, respectively. For each case, the experimental data were obtained in 3 items: mean X speed, mean Y speed and velocity moment. Results : The results of this study were as follows; 1. In E/E group, the statistically significants were shown on Y speed and velocity moment in the case of normal standing when eye open and X speed and velocity moment in the case of normal standing when eye close(p<0.05). 2. In control group, the statistically significants were not shown on all posture(p>0.05). 3. There was a statistically significant difference on the X speed and velocity moment in the case of normal standing when eye close between control group and E/E group(p<0.05). Conclusion : The above results revealed that hip abductor strengthening exercise using elastic band were partly effective for improving the static balance ability.

• 한국운동역학회지
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• 제24권2호
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• pp.103-109
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• 2014

The study aimed to examine the effect of a corrective exercise on Cobb's angle and static and dynamic foot pressure in patients with kyphosis. Patients with kyphosis participated in a 12 weeks of corrective exercise program. Participants were randomly assigned to a corrective exercise group (n=17) and a control group (n=17), and corrective exercise for 60 minutes are executed every 3 times a week. All data were analyzed by two-way repeated measured ANOVA. Statistical level was set up as a=.05. As a result, Cobb's angle had significantly effects according to time and groups. Anterior and posterior part of static foot pressure showed significant effects by time but not by groups. Whereas left and right part of static foot pressure showed no significant effects. And dynamic foot pressure showed significant effects by time but not by group also. In conclusion, it is approved that this exercise was helpful on abnormal posture arrangement and improvement of unbalanced muscle capability.

• 한국정보통신학회논문지
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• 제25권5호
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• pp.667-676
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• 2021

최근 우리나라의 청소년들은 스마트폰 과사용, 많은 학습량에 따른 신체활동 부족 등으로 인하여 자세 불균형의 위험에 노출되어있다. 또한 코로나 19로 인해 효과적인 비대면 운동 서비스에 대한 니즈가 증가하고 있는 추세이다. 이에 착안해 본 연구에서는 청소년들을 대상으로 둥근 어깨 개선의 효과를 제공하면서 비대면 서비스의 한계를 극복하기 위해 근전도 센서를 활용한 운동 서비스를 제안하고자 한다. 둥근 어깨를 개선할 수 있는 운동 프로그램을 구성하고, 효과적으로 운동할 수 있도록 근전도 센서를 연동한 어플리케이션을 구현하였다. 운동 프로그램은 4주 동안 타깃 근육 부위를 번갈아 가며 운동할 수 있도록 구성했고, 이에 따라 변화하는 근전도 수치를 측정하여 피드백을 제공할 수 있는 기능을 부가했다. 본 연구를 통하여 운동 기반의 자세 교정 디지털 서비스의 바탕을 제공하고, 이를 통하여 불균형한 신체를 개선함으로써 건강 증진의 가능성을 도모하고자 한다.

• 대한지역사회작업치료학회지
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• 제3권1호
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• pp.1-10
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• 2013

목적 : 충남지역 일개 농촌마을에서 농작업 자세를 기초로 설계한 근골격계 질환 예방운동 프로그램이 참여자의 균형능력, 요통의 기능적 장애 수준 및 사회 심리적 스트레스에 미치는 영향을 알아보고자 하였다. 연구방법 : 충남지역 일개 마을의 농업인으로 근골격계 증상이 있는 21명에게 2008년 7월 10일부터 10월 11일까지 총 12주간, 주 1회, 회당 90분씩의 운동프로그램을 제공하였다. 운동프로그램은 농작업 자세를 고려하여 유연성 및 근력을 강화하도록 구성하였다. 참여자 중 8회 이상 출석하고 중재 전, 후 평가에 모두 참여한 13명의 자료를 기초로 균형능력, 요통의 기능적 장애 수준 및 사회 심리적 스트레스 수준을 분석하였다. 결과 : 참여자 13명은 모두 여성으로 평균 70.55(${\pm}6.78$)세였다. 참여자들은 대부분 일반 밭농사(92.3%)에 종사하고 있으며, 작업 중 통증을 주로 느끼는 부위는 허리(69.2%)와 무릎(61.5%)이었고, 전반적인 건강상태에 대해서는 46.2%가 '건강하지 않다'고 응답하였다. 균형능력은 눈뜨고 오른발서기가 중재 전 평균 9.27(${\pm}5.53$)초에서 중재 후 14.22(${\pm}5.47$)초로 유의하게 증가하였다(p<.05). 요통의 기능적 장애 수준은 평균 19.84(${\pm}6.89$)점에서 14.38(${\pm}7.58$)점으로 유의하게 감소하였다(p<.05). 그러나 사회 심리적 스트레스 수준에는 변화가 나타나지 않았다. 결론 : 밭농사를 주로 하는 여성 농업인을 대상으로 실시한 본 운동프로그램은 참여자의 균형능력 향상 및 요통의 기능적 장애의 감소에 기여하였다. 향후에는 작업특성에 따라 차별화된 운동프로그램의 효과에 대한 연구가 진전되기를 기대한다.

• Safety and Health at Work
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• 제1권2호
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• pp.124-133
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• 2010

Objectives: This study was conducted to develop a model describing the interaction between lifestyle, job, and postural factors and parts of the upper extremities in shipyard workers. Methods: A questionnaire survey was given to 2,140 workers at a shipyard in Ulsan City. The questionnaire consisted of questions regarding the subjects' general characteristics, lifestyle, tenure, physical burden, job control, posture and musculoskeletal symptoms. The overall relationship between variables was analyzed by a structural equation model (SEM). Results: The positive rate of upper extremity musculoskeletal symptoms increased in employees who worked longer hours, had severe physical burden, and did not have any control over their job. Work with a more frequent unstable posture and for longer hours was also associated with an increased positive rate of musculoskeletal symptoms. Multiple logistic regression analysis showed that unstable posture and physical burden were closely related to the positive rate of musculoskeletal symptoms after controlling for age, smoking, drinking, exercise, tenure, and job control. In SEM analysis, work-related musculoskeletal disease was influenced directly and indirectly by physical and job stress factors, lifestyle, age, and tenure (p < 0.05). The strongest correlations were found between physical factors and work-related musculoskeletal disease. Conclusion: The model in this study provides a better approximation of the complexity of the actual relationship between risk factors and work-related musculoskeletal disorders. Among the variables evaluated in this study, physical factors (work posture) had the strongest association with musculoskeletal disorders.

• 대한물리의학회지
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• 제10권2호
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• pp.17-27
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• 2015

PURPOSE: The purpose of this study was to compare the effects of three interventions (intervention by passive range of motion exercise plus manual cervical traction, Mulligan's joint mobilization, and strengthening exercises) after Kaltenborn's joint mobilization on the cervical spine alignment, and muscle activity in patients with a forward head posture. METHODS: The subjects were 39 students from H University in Chungnam and C University in Jeonbuk. The subjects in each group attended training sessions three times a week for four weeks. We used one-way ANOVA and Scheffe's post hoc test to compare values between groups, and used paired t-test to compare the values of the dependent variables within groups. RESULTS: The results showed that the active intervention group experienced a significant increase compared to the passive intervention group in terms of the craniovertebral angle, cervical lordosis angle, and had significant decreases compared to the passive intervention group in terms of the upper trapezius muscle activity. The active intervention group also had significant increases in craniovertebral angle and decreased anterior scalene muscle activity than the active-assistive intervention group. The active-assistive intervention group had significant decreases compared to the active intervention group in terms of the serratus anterior, levator scapulae, and splenius capitis muscle activity. CONCLUSION: It appears that the subjects with a forward head posture had significant improvements in the cervical lordosis angle, cranial rotation angle, craniovertebral angle, and muscle activity after intervention by Mulligan's joint mobilization (active-assistive intervention component) and strengthening exercises (active intervention component) after applying Kaltenborn's joint mobilization.