• 한국운동역학회지
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• 제31권3호
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• pp.214-219
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• 2021

Objective: The aim of this study was to evaluate the differences in muscle activity of hamstring muscle depending on the position of the feet during Swiss ball hamstring curl exercise. Method: Total of 15 male participants with no history of hamstring muscle injuries and musculoskeletal disorders in the past 6 months were participated in this study (Age: 29.27 ± 4.96 yrs, Height: 173.47 ± 5.18 cm, Body mass: 75.47 ± 12.50 kg). The muscle activation of semitendinosus and biceps femoris with four different feet positions including neutral stance, internal rotation, external rotation, and wide stance were measured during a Swiss ball hamstring curl exercise. For the analysis, the Swiss ball exercise movement comprised of 3 events (90°→ 0°→ 90°) based on the knee angle and 2 phases relative to the mechanism of muscle contraction (eccentric/concentric contraction). To pursue the study goal, an one-way ANOVA with repeated measures was performed with statistical significance as α = 0.05. Results: There was no statistically significant feet position effect found during the Swiss ball hamstring curl with eccentric contraction phase (p>.05). It is, however, semitendinosus showed an enhanced muscle activation in concentric contraction phase, displaying the highest muscle activity in wide stance and the lowest in external rotation (p<.05). Conclusion: Our findings suggest that this exercise can be beneficial in selectively training the semitendinosus. In other words, Swiss ball hamstring curls performed in wide stance strengthens semitendinosus, which improves the stability of knee and are effective in preventing knee injuries and reinforces rehabilitation.

• PNF and Movement
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• 제19권1호
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• pp.147-152
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• 2021

Purpose: This study was conducted to investigate the functional differences of the two heads of the biceps brachii by measuring the functions in supination according to pronation by the angle of the flexion of the elbow joint, except for the activities of the elbow flexors. Methods: This study was conducted with 25 healthy men in their 20s. At a glenohumeral-joint 0˚ flexion posture, angles of flexion of the elbow joint of 0˚, 30˚, 60˚, 90˚, and 120˚ were randomly provided, and they were asked to perform supination and pronation with an elastic band. Using an eight-channel surface electromyogram, the muscle activities of the long and short heads of the biceps brachii were measured. The activities of the short and long heads according to the angle were analyzed using a one-way ANOVA, and as a post-test, LSD was employed. Results: The analysis of the impact of the resistance of the elastic band in supination on the differences in the muscle activities in the short and long heads suggests there was a significant difference between 0˚ and 30˚ (p < 0.05). Conclusion: In supination according to forearm pronation, the long head had greater action in the early flexion posture of the elbow joint, and it is judged that the ratio of the flexion of the elbow joint according to the actions of the biceps brachii was considered small.

• 대한본초학회지
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• 제37권5호
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• pp.83-88
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• 2022

Objectives : Jakyakgamcho-tang (JGT) has been traditionally used to treat muscular convulsion and pain in South Korea. According to recent studies, JGT has been reported to have anti-depression, anti-inflammation, anti-oxidative, anti-diabetics, anti-spasm and analgesic effects, but studies on its anti-neuroinflammatory and neuroprotective effect have not been deeply conducted. Thus, we investigated the anti-neuroinflammatory activity of JGT on lipopolysaccharide (LPS)-stimulated mouse microglia cells. Methods : To investigate the anti-neuroinflammatory effects of JGT on BV2 microglial cells, we examined the production of nitric oxide (NO) using griess assay, and mRNA expressions of pro-inflammatory cytokines such as interleukin (IL)-1𝛽, IL-6, and tumor necrosis factor (TNF)-𝛼 using real time RT-PCR. Furthermore, to determine the regulating mechanisms of JGT, we investigated the heme oxygenase (HO)-1 by real time RT-PCR. Results : Pre-treatment of JGT effectively decreased NO production in LPS-stimulated BV2 cells at concentrations without cytotoxicity. Additionally, JGT significantly suppressed the production of IL-1𝛽, IL-6, and TNF-𝛼 in LPS-stimulated BV2 cells. Furthermore, JGT activated the HO-1 expression, which is one of the immunomodulatory signaling molecules. And the abolishment of HO-1 by tin protoporphyrin IX (SnPP, the HO-1 inhibitor) reversed the anti- inflammatory activity of JGT in LPS-stimulated BV2 cells. Conclusions : Our results suggest that the JGT has anti-neuroinflammatory effect through the activation of HO-1 in LPS-stimulated BV2 cells. Thereby, JGT could expected to be used for the prevention and treatment of neurodegenerative disease related to neuroinflammation.

• 대한통합의학회지
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• 제11권3호
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• pp.79-89
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• 2023

Purpose : Until recently, the number of cancer patients continues to increase, and these patients have many limitations in their activities of daily living. In the republic of Korea, cancer patients are showing an increasing trend every year. Cancer disease not only significantly reduces the quality of life in individuals, but also causes various side effects if not managed. The purpose of this study was to investigate the effects of aerobic exercise and resistance exercise on health-related problems in cancer patients. Methods : This study searched for studies that applied aerobic exercise and resistance exercise to cancer patients reported in search engines (google scala, dbpia, and pubmed) from 2017 to 2022. Six randomized controlled trials and two systematic reviews and meta-analyses were used for analysis in our study. "physical activity", "exercise", "aerobic exercise", "resistance exercise", and "cancer patient" were the main search terms. The data included aerobic exercise, resistance exercise, cancer patients' muscle strength, physical strength, quality of life, and physical activity. Results : According to the eight studies that met the criteria included in this review study, it was found that aerobic exercise and resistance exercise had an effect on the increase in physical fitness, muscular strength, quality of life, and range of motion in cancer survivors. Conclusion : It was confirmed that aerobic exercise and resistance exercise are safe and effective interventions that can be applied to cancer patients without side effects. A limitation of this study is that it did not examine cancer diseases in various population groups such as the elderly and children. Therefore, in future studies, studies that consider specific details such as age, gender, type of cancer, and physical differences are needed.

• 치위생과학회지
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• 제12권4호
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• pp.437-442
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• 2012

이 연구는 20명의 치위생과 학생들을 대상으로 스켈링 실습 시 발현되는 근육들의 활성도와 통증부위를 파악하여 치과위생사의 작업자세에 따른 기초자료를 제시하고자 연구를 실시하였다. 스켈링 시 근활성도의 측정은 free EMG를 이용하였고, 근골격계 통증부위를 알아보기 위해 Nordicstyle 설문지를 이용하여 측정된 연구결과는 다음과 같다. 1. 자세에 따른 스켈링 시 통증의 발현은 팔꿈치, 등, 다리, 무릎, 발목/발은 그룹간에 차이가 없는 것으로 나타났으나 목, 어깨, 손목/손, 허리에서는 자세에 따라 통증의 정도 차이가 높게 나타났다. 2. 자세에 따른 근활성도를 측정한 결과 올바른 자세를 가진 그룹에서는 시간의 경과에 따라 상승모근과 상완요골근에서 변화를 보였고, 나쁜 자세를 가진 그룹에서는 후두부근, 상승모근, 상완요골근에서 근활성도가 높게 나타났다. 3. 근활성도에서 두 군간의 변화양상은 좋은 자세로 스켈링을 실시한 그룹에서는 낮은 근활성도를 보였으나, 나쁜자세로 스켈링을 실시한 그룹에서는 근활성도가 과하게 증가되었다. 따라서 올바른 자세를 유지하며 스켈링을 실시하는 것이 근육의 활성을 효과적으로 사용하는데 도움이 되었음을 알수 있었고, 앞으로 임상에서 근무하는 치과위생사를 대상으로 연구를 실시하여 직무 효율성을 높이는 것이 필요하리라 생각된다.

• 한국응용과학기술학회지
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• 제39권4호
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• pp.568-579
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• 2022

본 연구의 목적은 학군사관후보생(ROTC)의 신체활동 참여습관, 체력수준, 학업성취능력의 관계를 조사하는 것이다. 본 연구의 참가자는 J 대학교에 재학중인 71명의 학군사관후보생을 선발하였다. 신체활동 참여습관은 국제신체활동설문지(Global Physical Activity Questionnaire, GPAQ)를 이용하여 조사하였고, 체력수준은 건강관련 체력평가로 측정하였다. 학업성취능력은 해당 학군단 장의 승인을 받은 대학성적자료(GPA)를 참가자 동의하에 수집하여 각각의 자료를 분석하였다. 신체활동 참여습관, 체력수준, 대학학점 간의 상관관계를 분석하였고, 체력수준별 학점을 비교하였다. 본 연구에서 신체활동 참여습관과 학업성취능력 사이에 통계적으로 유의한 상관관계가 없는 것으로 조사되었다. 반면 주요 과목과 총체력점수, 심폐체력, 근지구력, 유연성, 신체조성 간에는 통계적으로 유의한 상관관계가 나타났다. 체력 수준별로는 체력이 높은 그룹의 ROTC가 낮은 체력 그룹의 ROTC보다 통계적으로 유의하게 높은 학업 성취능력을 보였다. 또한 낮은 체력수준의 ROTC 그룹은 높은 체력수준의 ROTC에 비해 학업성취능력이 다소 낮은 것으로 나타났다. 결론적으로 체력수준이 높은 ROTC는 그렇지 않은 사람에 비해 학습능력 향상에 긍정적인 영향을 미쳤다. 본 연구는 자율적이지만 체계적인 체력훈련 프로그램을 제공하여 ROTC의 체력을 향상시키고 우수한 미래 장교를 양성할 것을 제안한다.

• 디지털융복합연구
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• 제12권7호
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• pp.411-418
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• 2014

본 연구는 20대 성인남성을 대상으로 세 운동군이 정적 및 동적 균형능력과 근활성도에 미치는 효과를 규명하기 위하여 수중 운동군, 체간 안정화 운동군, 균형 운동군으로 각각 15명씩 배치하였다. 2013년 6월부터 2013년 9월까지 연구가 진행되었으며, 6주 간 1주일에 3일, 1회 30분 동안 중재 후, 동일 대상자들의 균형능력 및 근활성도(앞정강근, 장딴지근)를 측정하여 비교하였다. 그 결과 집단 내 중재 전과 중재 후의 비교에서 세 운동군 모두 신체중심 이동면적과 총궤적길이의 변화는 유의한 차이가 있었고(p<.05)(p<.01), 동적 균형에서도 안정성 한계의 변화는 유의한 차이가 있었다(p<.05)(p<.01). 앞정간근의 근활성도의 변화에서 세 운동군의 좌 우측 모두 통계학적으로 유의한 차이가 있었고(p<.05)(p<.01), 장딴지근은 체간 안정화 운동군의 좌측을 제외한 모두 통계학적으로 유의한 차이가 있었다(p<.05)(p<.01). 수중 운동이 균형능력의 향상과 근활성도 증가에 효과적임을 규명하였고, 본 연구결과를 토대로 균형능력이 좋지 않은 노인이나 환자들에게 객관적인 수중 운동 효과를 밝힐 수 있는 연구가 진행되어 구체적인 수중 운동 프로그램 개발을 제안하고자 한다.

• 재활복지
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• 제20권4호
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• pp.177-201
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• 2016

본 연구는 재활체육프로그램의 구성요인과 요소를 탐색하여 도출하고 각 요소 간의 상대적 중요도를 분석함으로써 재활체육프로그램의 체계적인 구성과 효율적 시행을 위한 토대를 마련함에 그 목적이 있다. 재활체육프로그램의 구성 요인과 요소를 도출하기 위하여 장애인을 대상으로 재활체육 및 장애인체육 관련 프로그램을 운영한 기관 단체 병원에 2년 이상 종사한 경험이 있는 지도자, 특수체육교사, 특수체육학계 전문가 20명을 대상으로 델파이기법(Delphi Technique)을 활용하여 3차에 걸쳐 설문을 진행하였다. 도출된 재활체육프로그램 구성요인들 간의 상대적 중요도를 도출하기 위해 의사결정 방식의 과학적 방법 중 하나 인 계층분석(Analytic Hierarchy Process: AHP)을 실시하였다. 연구결과 재활체육프로그램의 구성 요인으로 체력운동, 심리운동, 수중운동, 감각 지각운동, 보행운동, 운동기술 6개 요인과 21개의 하위요소로 도출되었다. 도출된 재활체육프로그램의 구성요인의 우선순위를 분석한 결과, 체력운동(33.2%), 수중운동(20.6%), 심리운동(15.1%), 감각 지각운동(11.7%), 보행운동( 10.8%), 운동기술(8.6%) 순으로 중요도가 나타났다. 또한 재활체육프로그램 구성 요인의 가중치가 부여된 상태에서 전체 요소 간 우선순위를 분석한 결과, 근력 및 근지구력운동이 23.4%의 가중치를 나타내어 가장 중요한 요소인 것으로 나타났으며, '명상'은 0.3%의 가중치를 나타내어 가장 낮은 중요 요소인 것으로 나타났다.

• 대한수의학회지
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• 제31권2호
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• pp.171-178
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• 1991

Effects of catecholamines were investigated on isolated strips of the male cattle oesophageal groove. In the circular muscles of the bottom and longitudinal muscles of the lip. isometric tensions was recorded with isometric myograph in 25ml organ bath. The results were as follows: 1. The muscular activity was different in preparations from the two parts. In the longitudinal muscle from the lip, rhythmic contractions generally occurred. while in the circular muscle from the bottom they were not seen almost. 2. In the circular muscle of the bottom, the increased tone and biphasic contractions were caused by catecholamines. And these contractions were mediated through $\alpha$-excitatory adrenoceptor. Also circular muscle showed minor inhibitory response to catecholamines. And these effects were mediated through $\beta$-inhibitory adrenoceptor. But the circular muscle was more sensitive to the $\alpha$-excitatory effect than $\beta$-inhibitory effect. 3. In logitudinal muslce of the lip. rhythmic contractions were reduced or disappeared by catecholamines(especially propranolol) and these effects were mediated through $\beta$-adrenoceptor.

• 대한임상전기생리학회지
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• 제6권1호
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• pp.31-42
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• 2008

This study performed in order to investigate the effect of isometric resistance exercise for vastus medialis oblique muscle with EMG(electromyography) biofeedback training which are applied to the patello-femoral joint of patients with osteoarthritis on the improve of function. The subjects had no neuromuscular disorders, and they were elder patients with osteoarthritis, 20 women. And the experiment was performed in control group, taping with EMG biofeedback training group respectively, and the measurement was carried out before and after the treatment and 4 weeks after the treatment. Motor unit action potential analysis with surface electromyography showed a significant change in RMS(root mean square) amplitude and MDF(median frequency) in vastus medialis oblique muscle(p<0.05). VMO/VL(vastus medialis oblique/vastus lateralis oblique) MDF ratio showed a significant change between groups(p<0.05). Taping with EMG biofeedback training applied to patello-femoral joint of osteoarthritis patients appeared to be effective for muscle function improvement. However, increase of muscular force in vastus medialis oblique muscle appears to have a positive effect on improve of function along with correction effect on patella malalignment. In conclusion, in case of osteoarthritis patients with loss of patello-femoral joint function, it appears to be effective to practice isometric resistance exercise of vastus medialis oblique muscle selective with taping.