• 제목/요약/키워드: Surface Extension

검색결과 655건 처리시간 0.026초

다양한 부하에서 2~5번째 발가락 폄을 동반한 짧은 발 운동이 엄지벌림근 근활성도와 안쪽세로활에 미치는 영향 (Effect of the Short Foot Exercise with 2nd~5th Toe Extension on the Abductor Hallucis Activity and Medial Longitudinal Arch under Various Loads)

  • 송성인;배창환;김상현
    • 대한정형도수물리치료학회지
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    • 제29권1호
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    • pp.25-31
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    • 2023
  • Background: In this study, the abductor hallucis activity and medial longitudinal arch angle were compared by performing four exercises, namely the short foot exercise, the short foot exercise with 2nd~5th toe extension, the short foot exercise with 2nd~5th toe extension with a load of 1kt on the sole, and the short foot exercise with 2nd~5th toe extension with a load of 2kg on the sole. Methods: Four short foot exercises as described above were performed by 20 healthy adult males and females. The abductor hallucis activity and medial longitudinal arch angle were measured and analyzed by surface electromyography and the Kinovea software program. Results: The short foot exercise with 2nd~5th toe extension, short foot exercise with 2nd~5th toe extension with a load of 1kg on the sole, and the short foot exercise with 2nd~5th toe extension with a load of 2kg on the sole showed significantly higher abductor hallucis activity than the short foot exercise alone. Among these, the short foot exercise with the 2nd~5th toe extension was the most effective. All exercises showed a significantly decreased medial longitudinal arch angle post-exercise than pre-exercise, and the short foot exercise with the 2nd~5th toe extension showed a significantly decreased medial longitudinal arch angle compared to the other three exercises. Conclusion: It is believed that the short foot exercise with the 2nd~5th toe extension can be proposed as an effective exercise that can replace the short foot exercise alone.

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지지면에 따른 안정화 운동이 근수행력에 미치는 영향 (The Effects of Stabilization Exercise on Muscle Performance according to Bearing Surface)

  • 박재철;한종만;김용성;김용남
    • 대한임상전기생리학회지
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    • 제10권1호
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    • pp.39-44
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    • 2012
  • Purpose : This study purposed to analyze how dynamic stabilization exercise on an unstable surface, and static stabilization exercise on muscle strength and endurance. Methods : For this study we sampled 9 people for the unstable surface dynamic stabilization exercise group, 9 for the stable surface static stabilization exercise group, and 9 for the control group. In order to examine muscle strength and endurance, we measured changes in the maximal voluntary isometric contraction (MVIC) using a dynamometer before, 3 weeks after, and 6 weeks after the experiment. Results : First, with regard to change in muscle strength, flexion strength showed a significant change in interaction by time (p<0.05). Extension strength showed a significant change in interaction by time (p<0.05). Second, with regard to change in endurance, flexion endurance showed a significant change in interaction by time (p<0.05). Extension endurance showed a significant change in interaction by time (p<0.05). Conclusion : In conclusion, this study confirmed significant changes in interaction between the groups and by time with regard to changes in muscle strength and endurance. These results suggest the potential of surface dynamic stabilization exercise as a clinical intervention.

Stem Rot of Strawberry Caused by Sclerotium rolfsii in Korea

  • Kwon, Jin-Hyeuk;Jeong, Sun-Ki;Son, Kyeng-Ae;Kim, Tae-Seung;Lee, Chun-Hee;Song, Geun-Woo;Park, Chang-Seuk
    • 한국식물병리학회:학술대회논문집
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    • 한국식물병리학회 2003년도 정기총회 및 추계학술발표회
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    • pp.129.1-129
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    • 2003
  • A destructive stem rot of strawberry (cv. Akihime) occurred sporadically in farmers' fields around Daegok-Myeon, Jinju City, Gyeongnam province in Korea. The infected plants showed stem and crown rot, sometimes whole plant blighted. White mycelia spread over stems of infected clones and sclerotia formed on the old lesions near to soil surface. The fungus formed white colony on PDA and showed maximum mycelial growth and scleotial formation around 30$^{\circ}C$. The fungus usually have many narrow mycelial strands in the aerial mycelium and the width were 4.0∼10.0$\mu\textrm{m}$. The typical clamp connections were formed on the mycelium. The shape of sclerotia was globoid and 1.0∼2.8 mm in size. The fungus was isolated repeatedly from the infected tissues and identified as Sclerotium rolfsii. The fungus was inoculated to strawberry and confirmed its pathogenecity This is the first report on the stem rot of strawberry caused by Scierotium rolfsii in Korea.

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The Analysis of the Nano-Scale MOSFET Resistance

  • Lee Jun Ha;Lee Hoong Joo;Song Young Jin
    • 대한전자공학회:학술대회논문집
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    • 대한전자공학회 2004년도 학술대회지
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    • pp.801-803
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    • 2004
  • The current drive in an MOSFET is limited by the intrinsic channel resistance. All the other parasitic elements in a device structure playa significant role and degrade the device performance. These other resistances need to be less than $10{\%}-20{\%}$ of the channel resistance. To achieve the requirements, we should investigate the methodology of separation and quantification of those resistances. In this paper, we developed the extraction method of resistances using calibrated TCAD simulation. The resistance of the extension region is also partially determined by the formation of a surface accumulation region that forms under the gate in the tail region of the extension profile. This resistance is strongly affected by the abruptness of the extension profile because the steeper the profile is, the shorter this accumulation region will be.

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고강도와 보통강도 콘크리트를 사용한 보-기둥 접합부의 내민길이에 따른 구조적 거동 (The Effect on the Extension Distances of Beam-Column Joint with High and Low Strength Concrete)

  • 이광수;안종문;문정일;박희민;장일영;신성우
    • 한국콘크리트학회:학술대회논문집
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    • 한국콘크리트학회 1992년도 봄 학술발표회 논문집
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    • pp.90-94
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    • 1992
  • ACI318-89 Recommened that when the specified compressive strength of concrete in a column is greater than 1.4 times that specified for a floor system, top surface of the column concrete shall extend 2ft (600mm) into the slab from the face of column to avoid unexpected brittle failure. The major variables are extension distance, compressive strength of concrete (f'c), shear confinement ratio(Vs), and loading types. The test results showed that the load capacity of the specimen subjected to monotonic loading had more than that of the specimen subjected to one way cyclic loadings. The failure models of specimens under cyclic loading were concentrated at 5∼20cm apart region from beam-column joint face. Ducility index(μf) are increased with increasing of shear confinement ratio. The specimen with 2ft extension distance shows more ductility than specimen with lft extension distance.

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감초 생육 및 품질에 미치는 재배 토성의 영향 (Effects of Cultural Soil Texture on Growth and Quality of Glycyrrhiza uralensis Fischer)

  • 남상영;김인재;최성열;김민자;김영호;송인규;이광재;박재호;김태중
    • 한국국제농업개발학회지
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    • 제23권5호
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    • pp.531-536
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    • 2011
  • 재배토성이 감초 생육 및 품질에 미치는 영향을 구명코자 2009년부터 2년간 시험을 수행한 결과를 요약하면 다음과 같다. 1. 재배년생별 생육중 경엽은 1년생, 포복경 2년생, 근은 2년생에서 양호한 경향을 보였으며, 토성에 따라서 경엽중은 사양토에서 무거웠고, 초장, 분지수, 경태는 사질식양토에서 우수하였다. 2. 포복경의 길이, 수, 무게 등 생육은 사질식양토 > 사양토 > 양질사토 순으로 좋았다. 3. 주근과 지근의 생육은 양질사토에서 길었으며, 주근경, 지근경은 사양토에서 굵었다. 지근수는 사질식양토에서 다소 많았다. 4. 근 수량은 주근, 지근 등에서 사양토 > 사질식양토 > 양질 사토 순으로 많으며, 1년생과 2년생 근 상품 수량은 사양토에서 양질사토 204 kg/10a 대비 57%, 2년생은 71% 각각 증수하였다. 5. 글리시리진(glycyrrhizinic acid)의 함량은 1년생은 사질식 양토에서 1.62%, 2년생은 사양토에서 1.58%로 가장 높았다.

정상인의 완관절 신전, 굴곡, 악력(握力) 시 표면근전도 측정 연구 (A Study of Surface Electromyography Measurement of Wrist Exercise (Extension, Flexion, Grasping) in Healthy People)

  • 김석희;이경진;최유민;김주용;육태한;이상룡;김종욱
    • Journal of Acupuncture Research
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    • 제32권3호
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    • pp.53-60
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    • 2015
  • Purpose : This study aimed to prove that surface electromyography(SEMG) can be used to identify the degree of symptoms of diseases in the upper extremities; it also aimed to confirm various potential therapeutic effects through an inquiry into the value measured by the SEMG on certain acupuncture points in the upper extremities. Methods : Fifty healthy people received instructions for the method of exercise: wrist flexion, extension and hand grasping. Disposable electrodes were attached to acupuncture points of Susamni($LI_{10}$), Naegwan($PC_6$), Oegwan($TE_5$) and below Sohae($HT_3$) two cun on both sides in flexion, extension and grasping to measure the SEMG values. The research results were analyzed using SPSS statistics Ver. 22.0(IBM, USA). Results : The average value was highest on Naegwan($PC_6$) in grasping, and the average SEMG value was higher in the order of grasping, extension and flexion. The asymmetry index of each point was Susamni($LI_{10}$) $16.26{\pm}13.59%$, Oegwan($TE_5$) $20.38{\pm}15.59%$, below Sohae($HT_3$) two cun $20.89{\pm}16.77%$, Naegwan($PC_6$) $22.49{\pm}14.91%$ in wrist extension, Susamni($LI_{10}$) $25.99{\pm}21.44%$, Oegwan($TE_5$) $21.15{\pm}15.94%$, below Sohae($HT_3$) two cun $19.62{\pm}15.46%$, Naegwan($PC_6$) $19.93{\pm}16.85%$ in wrist flexion, Susamni($LI_{10}$) $16.60{\pm}12.21%$, Oegwan($TE_5$) $10.94{\pm}8.29%$, below Sohae($HT_3$) two cun $15.20{\pm}12.60%$, Naegwan($PC_6$) $11.68{\pm}7.77%$ in grasping. Conclusions : In this study, to identify the degree of symptoms of diseases in the upper extremities and confirm therapeutic effects, it is necessary to analyze the calculated percentage and compare the SEMG measurement of special points with those of other points, and with the asymmetry index.

Effects of different covering material on stable winter survival management with edible leaf in ramie (Boehmeria nivea L.).

  • Kim, Myeong Seok;An, Ho Sub;Kim, Gil Ja;Kim, Yong Soon;Choi, Jin Gyung;Kim, Dong Kwan;Park, Heung Gyu;Kim, Hyun Woo;Kim, Seong Il
    • 한국작물학회:학술대회논문집
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    • 한국작물학회 2017년도 9th Asian Crop Science Association conference
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    • pp.226-226
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    • 2017
  • This study was to evaluate methods to high quality food ramie rice cake, thereby increasing farm income. This study investigated the effects of different covering material on stable winter survival management with edible leaf in Ramie(Boehmeria nivea L.). The method of winter survival with covering material were conducted under three condition compose to Non covering, Rice straw cutting covered with 500kg.10a-1, Rice husks covered with 1,000kg.10a-1(covered 4~5 cm thickness in the soil surface). Method of application were standard application(N-P-K-Compost applied at 27-9-27-600kg.10a-1. Compost and fused phosphate applied at 100% of basal fertilizer in March 25. 20% of top dressing were four times application in March 25 - October 5. Planting year were March 15, 2011. Plants were spaced 60 cm apart in rows 25 cm apart with open cultivation. According to non covering < Rice husks covered with 1,000kg.10a-1 < Rice straw cutting covered with 500kg.10a-1 cultivation this order, aerial part as a result were plenty amount of growth. Sprout time and winter survival rates was uncovering control plot compared to 2 - 5 days quickly, 45-57% highly by rice husks and rice straw covering. Green leaf yields is untreated control plot (12,44 kg.10a-1) compared to rice husks covering 7% higher, and rice straw covering increased to 18% of the most.

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안정된 지지면과 불안정한 지지면에서 팔굽혀 펴기 시 상지 근활성도와 운동학적 변수간의 상관분석 (Relationship between Muscle Activity and Kinematic Variables of the Upper Extremity during a Push-up Task on Stable and Unstable Surfaces)

  • 윤정규
    • The Journal of Korean Physical Therapy
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    • 제23권2호
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    • pp.7-15
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    • 2011
  • Purpose: We investigated the relationship between the muscle activity and kinematic variables of the upper extremity during a push-up task on stable and unstable surfaces. Methods: We recruited 15 healthy subjects. Subjects completed the push-up task on stable and unstable surfaces. Surface electromyograms were recorded from the serratus anterior, upper trapezius, latissimus dorsi, infraspinatus to monitor changes in muscle activity. Markers for kinematic changes of elbow flexion, shoulder extension, shoulder retraction and scapular adduction were attached at C7, the T7 spinous process, both acromions, the scapula superior and inferior angle, the humerus lateral epicondyle, and the ulnar styloid process. Correlation coefficients between muscle activity and kinematic variables were analyzed by SPSS for Windows, version 15.0. Results: On the unstable surface, elbow flexion and shoulder extension increased with increasing muscle activity of serratus anterior, upper trapezius and infraspinatus. On the stable surface, shoulder retraction decreased with increasing muscle activity of serratus anterior and infraspinatus. Scapular adduction decreased with all types of increasing muscle activity, regardless of the support surface. Conclusion: Correlations between muscle activity and kinematic variables were observed on stable and unstable surfaces during a push-up task, while correlations between right and left variables were not clear. These finding suggest that it may be used to develop a rehabilitation program which could be effective in improving shoulder function in patients with shoulder problems.

체형별 상복동작에 따른 상체의 체표면 변화에 관한 연구 -남자대학생을 중심으로- (A Study on the Variation of the Body surface Area by the Arm movements to Somatotype -The Subject of the College Men-)

  • 김진경
    • 대한가정학회지
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    • 제26권2호
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    • pp.1-13
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    • 1988
  • The purpose of this study was to classify somatotype of males, to show changes of the body skin surface by the somatotype. The size of sample was 156 males between age 20 and 24. Somatotype classified into Bending somatotype, Standard somatotype, Turning over somatotype. And according to the somatotype, changing of the upper part of the body by the arm movements analyzed through gypsum experiment. The result obtained from this study were as follows; 1. the variation of the upper part of the body form by changing the am movements, by the increasing of movements, shoulder-point ws moved to be inside or upside, the anterior armpit point & armpit point were moved to the upside. 2. As a result of investigating into the rate of the expansion and contraction of the basic lines and body surface area by the arm movements, the rate of expansion and contraction of the basic lines by the arm movements, the side sea length showed the maximum rate of extension in 135 degrees, the shoulder length showed the maximum rate of contraction in 135 degrees. The rate of expansion and contraction on the body surface area by the arm movements showed the phenomenon of contraction, of items F1, F6, B1, B9 showed the phenomenon of extension, of items F3, F4, F8, F9, B8, B9. 3. According to somatotypes, items which show the significant difference were, of items f3, f8, b3, b8, F2, F7, F8, B3, B7, in all movements.

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