• 제목/요약/키워드: Physical Education High School

검색결과 755건 처리시간 0.026초

고등학생의 증강현실을 활용한 협력적 과학 개념학습에서 나타나는 언어적·물리적 상호작용 (High School Students' Verbal and Physical Interactions Appeared in Collaborative Science Concept Learning Using Augmented Reality)

  • 신석진;김혜린;노태희;이재원
    • 한국과학교육학회지
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    • 제40권2호
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    • pp.191-201
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    • 2020
  • 이 연구에서는 증강현실을 활용한 협력적 과학 개념학습에서 나타나는 학생들의 언어적 상호작용과 물리적 상호작용을 심층적으로 조사하였다. 3개의 소집단으로 구성된 고등학교 1학년 학생 12명이 연구에 참여하였다. 이들은 화학 결합 개념 이해를 목표로 개발된 스마트 기기 기반의 증강현실 어플리케이션을 활용한 수업에 참여하였다. 학생들의 수업 과정은 녹음 및 녹화하였으며, 반구조화된 면담을 실시하였다. 연구 결과, 언어적 상호작용 중 개별 진술 단위에서는 정보 질문과 정보 설명 및 방향 질문과 방향 설명에 관한 진술의 비율이 높았고, 상호작용 단위에서는 교정형 및 누적형 상호작용의 비율이 높았다. 학습 진행에 관한 개별 진술 및 상호작용의 비율도 높게 나타났다. 학생들의 물리적 상호작용은 유의미한 언어적 상호작용 없이 단독으로 이루어진 경우가 가장 많았다. 학생들이 지식 구성 언어적 상호작용을 하며 물리적 상호작용을 할 때는 가상 객체를 응시하거나 활동지 관련 활동을 하는 비율이 높았던 반면, 물리적 상호 작용만 수행하거나 운영 관련 언어적 상호작용을 하며 물리적 상호 작용을 할 때는 증강현실의 마커의 조작과 관련한 다양한 탐색적 활동이 주로 나타났다. 연구 결과를 바탕으로 과학 교과에서 증강현실을 활용한 협력적 개념학습이 효과적으로 이루어지기 위한 방안을 제안하였다.

Acute Changes in Fascicle Behavior and Electromyographic Activity of the Medial Gastrocnemius during Walking in High Heeled Shoes

  • Kim, Jin-Sun;Lee, Hae-Dong
    • 한국운동역학회지
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    • 제26권1호
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    • pp.135-142
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    • 2016
  • Objective: The purpose of this study was to investigate the acute effect of walking on high heels on the behavior of fascicle length and activation of the lower limb muscles. Methods: Twelve healthy inexperienced high heel wearers (age: $23.1{\pm}2.0yr$, height: $162.4{\pm}4.9cm$, weight: $54.4{\pm}8.5kg$) participated in this study. They walked in high heels (7 cm) and barefoot on a treadmill at their preferred speed. During the gait analysis, the lower limb joint kinematics were obtained using a motion analysis system. In addition, the changes in fascicle length and the level of activation of the medial gastrocnemius (MG) were simultaneously monitored using a real-time ultrasound imaging technique and surface electromyography, respectively. Results: The results of this study show that the MG fascicle operates at a significantly shorter length in high heel walking ($37.64{\pm}8.59mm$ to $43.99{\pm}8.66mm$) in comparison with barefoot walking ($48.26{\pm}9.02mm$ to $53.99{\pm}8.54mm$) (p < .05). In addition, the MG fascicle underwent lengthening during high heel walking with relatively low muscle activation while it remained isometric during barefoot walking with relatively high muscle activation. Conclusion: Wearing high heels alters the operating range of the MG fascicle length and the pattern of muscle activation, suggesting that prolonged wearing of high heels might induce structural alterations of the MG that, in turn, hinder normal functioning of the MG muscle during walking.

한국고등학생의 체력요인과 국가수준의 학업성취도의 관계 (The relationship between physical fitness factors and academic achievement of high school students in Korea)

  • 문달주;최석주;오현주
    • 한국교육논총
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    • 제41권2호
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    • pp.1-23
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    • 2020
  • 본 연구의 목적은 고등학생의 체력요인인 심폐지구력과 근력·근지구력, 순발력 그리고 체지방지수가 학업성취도인 국어와 영어 그리고 수학성취도에 어떤 관계가 있는지를 알아보는 것이다. 연구방법은 2014년과 2017년 전국 고등학교 641명의 남·여학생을 대상으로 심폐지구력과 유연성, 근력·근지구력, 순발력 그리고 체지방지수를 이용하였다. 본 연구의 결과로 2014년도에서는 20m왕복오래달리기와 국어, 수학성취도가 음의 상관관계(p<0.01), 앉아윗몸앞으로굽히기가 영어성취도와 양의 상관관계(p<0.01), 제자리멀리뛰기와 영어성취도가 양의 상관관계(p<0.01), 체지방지수는 영어성취도와 양의 상관관계로 나타났다(p<0.05). 2017년도에서는 20m왕복오래달리기와 영어성취도가 양의 상관관계(p<0.05). 오래달리기걷기와 국어성취도, 수학성취도는 음의 상관관계로 나타났다(p<0.01). 앉아윗몸앞으로굽히기와 국어, 영어, 수학성취도는 양의 상관관계(p<0.01), 팔굽혀펴기와 수학성취도는 양의 상관관계(p<0.01), 체지방지수와 영어성취도는 음의 상관관계로 나타났다(p<0.05). 본 연구의 결론은 다양한 신체활동은 체력요인뿐만 아니라 학업 성취도에 긍정적인 관계를 만들기 때문에 보다 효과적인 체력증진프로그램을 개발하고 시행하는 것이 국내학생들의 학습능력증진에 기여할 수 있다고 기대한다.

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24주간 운동이 고등학교 단거리 선수의 심폐능력, 기초체력, 신체조성 및 근력에 미치는 영향 (Effects of 24 weeks of Training program on Aerobic Capacity, Body Composition, Physical Fitness, and Muscular strength in High School Sprinters)

  • 문태영;김인동;한건수
    • 한국산학기술학회논문지
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    • 제11권11호
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    • pp.4360-4366
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    • 2010
  • 본 연구에서는 고등학교 단거리 선수의 심폐능력, 기초체력, 신체조성, 그리고 각 부위별 근력이 24주간 운동을 통하여 어떠한 변화가 있는지 규명하였다. D 고등학교에 재학중이며 운동경력이 최소 4년이상된 남자 단거리 선수 8명을 연구대상자로 선정하였다. 운동 전 후 연구대상자들의 심폐능력, 신체조성, 근력 그리고 기초체력을 측정하여 자료처리 하였다. 본 연구결과, 체지방률, 체지방량, 제지방량, 그리고 체수분량 모두 훈련 후 통계적으로 유의한 증가가 있었다(p<0.05). $VO_2$max와 aerobic threshold는 운동전보다 향상되었으며 통계적으로 매우 유의한 변화가 나타났다 (p<0.05). 근력 및 기초체력 또한 통계적으로 유의한 상승 변화을 보였다 (p<0.05.) 본 연구결과 24주간의 훈련 프로그램은 남자 고등학교 단거리 선수들의 총체적 체력 향상을 도모하였다. 단거리 훈련 프로그램 작성 시 전통적인 방법으로 훈련을 계획하고 실천하기 보다는 경기력 향상 및 부상 예방을 위하여 훈련 전 종합적인 신체검사 및 체력 검사를 전문가와 같이 실시 및 평가하여 이를 토대로 개인의 체력에 맞게 훈련 프로그램을 계획 실천할 필요가 있을 것이다.

일 지역 중.고등학생들의 환경성 질환 및 보건교육 실태 조사 (Research on the Actual State of Environmental Disease and Health Education at Middle and High School Students)

  • 정종현;문기내;서보순;김창태;이재홍
    • 한국학교ㆍ지역보건교육학회지
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    • 제12권3호
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    • pp.65-87
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    • 2011
  • Objectives: The purpose of this study was to perform basic study on environmental and respiratory diseases in Ulsan and vicinities. Also, this study evaluated the actual state of environmental disease and health education at middle and high schools in Ulsan and surroundings. Methods: For this study, we conducted a survey on the health of the general public, environmental effects, and investigated the characteristics of environmental disease, health and hygiene education, etc. The populations of this study were middle and high school students in Ulsan, Korea. This study investigated the knowledge of environmental disease and health education at schools in Ulsan and vicinities from November 2009 to December 2009. All statistical calculations were performed with Statistical Package for Social Sciences (SPSS) for Windows, and gained the following results by implementing Frequency Analysis, Cross-tabulation Analysis and ANOVA. Results: As more and more environmental diseases are increased, the interest of the people has been increasing on this. The incidence rates of asthma and atopy were represented the top 25% of the country in Korea. The source of heavy metal, PAHs and VOCs in Ulsan includes the Petrochemical Complex at Nam-gu and Ulju-gun, the Nonferrous Metal Industrial Complex at Onsan-eup, Ulju-gun, and the Heavy Industrial Complex at Dong-gu and Buk-gu. Especially, there are a number of fossil fuel combustion facilities such as waste incineration plants and boilers at Nam-gu and the Onsan Industrial Complex. It may help greatly to investigate the characteristics of environmental pollutants such as environmental air pollutant and indoor contaminant to better manage the local student's health. Conclusions: It has been revealed that the hazardous chemicals and environmental contaminants are main substances of cause for asthma, atopy, dermatitis, and allergy disease. Therefore, through with collecting basic data such as environmental disease of inhabitants, health education, conscious and knowledgeable level in parents of students and students, We have to exert to improve knowledge and prevention with health life in school through development of health education program systematically for preventing of environmental disease.

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Protective effect of low-intensity treadmill exercise against acetylcholine-calcium chloride-induced atrial fibrillation in mice

  • Sung, Dong-Jun;Jeon, Yong-Kyun;Choi, Jaeil;Kim, Bokyung;Golpasandi, Shadi;Park, Sang Woong;Oh, Seung-Bum;Bae, Young Min
    • The Korean Journal of Physiology and Pharmacology
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    • 제26권5호
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    • pp.313-323
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    • 2022
  • Atrial fibrillation (AF) is the most common supraventricular arrhythmia, and it corresponds highly with exercise intensity. Here, we induced AF in mice using acetylcholine (ACh)-CaCl2 for 7 days and aimed to determine the appropriate exercise intensity (no, low, moderate, high) to protect against AF by running the mice at different intensities for 4 weeks before the AF induction by ACh-CaCl2. We examined the AF-induced atrial remodeling using electrocardiogram, patch-clamp, and immunohistochemistry. After the AF induction, heart rate, % increase of heart rate, and heart weight/body weight ratio were significantly higher in all the four AF groups than in the normal control; highest in the high-ex AF and lowest in the low-ex (lower than the no-ex AF), which indicates that low-ex treated the AF. Consistent with these changes, G protein-gated inwardly rectifying K+ currents, which were induced by ACh, increased in an exercise intensity-dependent manner and were lower in the low-ex AF than the no-ex AF. The peak level of Ca2+ current (at 0 mV) increased also in an exercise intensity-dependent manner and the inactivation time constants were shorter in all AF groups except for the low-ex AF group, in which the time constant was similar to that of the control. Finally, action potential duration was shorter in all the four AF groups than in the normal control; shortest in the high-ex AF and longest in the low-ex AF. Taken together, we conclude that low-intensity exercise protects the heart from AF, whereas high-intensity exercise might exacerbate AF.

일 지역 중·고등학생의 흡연실태 (A Study on the Actual Conditions of Smoking in Middle and High School Students in One Region)

  • 김현옥
    • 한국학교보건학회지
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    • 제12권1호
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    • pp.149-167
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    • 1999
  • To investigate the actual conditions of smoking in middle and high school students in Chinan County, I used a sturctured questionnaire for 1,579 students attending twelve middle-high schools from December 1, 1998 to December 20, 1998. I collected and data correlated the using an $SPSS-PC^+$ 1. The smoking rate of middle-high schoo1 students in Chinan County was 17.9%, relatively high. This smoking rate was different according to the gender, grade, religion, and economic situation. In mals, high school students, non-religious, students low income family students, the smoking rate was higher. The smoking rate of high school students was almost the same as the smoking rate of adults, generally higher than that of foreign teenagers. Because the smoking rat of studinets in the third grade of middle school and in the first grade of high School was six times higher, increased education should be conducted during this time in an attempt to curb the sudden increase of the smoking rate. The smoking rate of girl students was 5.0%; this has increased mor than three times from ten years ago. Consequently, counter measures should be taken against the smoking of female students as well as juvenile smoking in general. In addition, the smoking rate of middle-high school students showed interesting differences when correnated with enviornmental factors. Students with low grades, who are not satisfied with school life, who don't have both parents, who have uncaring parents who nare too strict or too arbitary, who have smoking parents, or who have experienced smoking commonly smoked. Therefore, to lower the smoking rate we should improve the school environment, improve a student's interest in school life. And parents or siblings should lead by example and quit smoking at home. Schools should educate students more effectively concerning the harmful effects of smoking and create an accurate understanding of its dancers. From the beginning, we should teach students never ever to touch cigaretts. 2. The surve discovered that most students started out of curiosity, or solicitantion from friends or elders at middle school, and had been smoking one to five cigarettes for more than a year. They obtained cigarettes at stores and most of them have friends who smoke. As a result anti-smoking education should be conducted at elementary schools prior to middle school. More than 95% of the teenagers who smoke had friends who smote and smoked out of curiosity or the recommendation of elders. Thus, we must focus on teenagers who smoke in group, rather than individually. Fuyrthermore, the strict application of the regulation of tobacco sales as well as tobacco cooperation from retailers are needed. While students did not show any mood or academic achievement difference after beginning smoking, 58.1% of the students a health situdation that was worse. Juvenile smoking is more harmful to the juvenile than adult smoking is to the adult. This should be focused on in an anti-smoking campaign. 3. Students who smoke hada more positive attitude toward smoking than students who don't smoke. Students who smoke had a tendency to have a nuetral position and are not concerned about smoking compared to non-smoking students. The survey showed that the great number of students had a nuetral position. Because this nuetrality may increase Juvenile smoking, education that provides an exact understanding of smoking should be performed to build the correct attidude toward smoking. 4. Middle school students smoke when angry, gloomy, anxious, a lone and when they have some problems to solve, on when they feel inconveniened in other wores, they smoke to reliver stress. They also smok due to addiction. Because smoking is not a praetical method to relieve stress, a program which helps to acquire positive relief stress should be provided to help reduce smoking. 5. About 65% of students who smoke want to quit smoking because of health problem, 78% of them have tried mor than once to quit but failed due to weak will power and peer pressure from friends who smoke. Juvenile smoking is group, oriented. Thus, the program that advances less smoking will be the one that focuseds on groups. 6. As for advice to students who want to quit smoking, "persuasion" was used most commonly, followed by a "presentation on how to quit smoking". Another method were severe punishment. About 70% of the students wanted the anti-smoking guide at school. 7. Most students (73.5%) had a position that more anti-smoking education at school is needed. Obriously, then, anti-smoking education at middle-high schools should be reinfoced. Although the education which explains the harmful influence of tobacco is known as an efficient way prevent smoking; it does not influence students who already smoke. Therefore, for students who smoke, multi-dimensional approaches must be attempted that include physical training, phychokogical approache, consultation and discussion, medical chek-ups, audio-visual education technigues, and professonal instructors, in addition, because smoking students have more negative on lukewarm attitude to anti-smoking education anti-smoking education should be conducted through a communicative style by dedicated teachers who care about students. In order to increase the effectiveness of this program.

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대입 준비생의 입시스트레스가 정신건강에 미치는 영향 (The Influence of High School Students' Entrance Exam Stress on Their Mental Health)

  • 이희자;박영수
    • 한국학교ㆍ지역보건교육학회지
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    • 제8권1호
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    • pp.43-54
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    • 2007
  • This study aimed at investigating the level of high school students' entrance exam stress and mental health first and also investigating if the entrance exam stress and mental health are related to gender, grade, character type, parenting style and economic status. This is expected to be used as a fundamental data for the development of health education program on high school students' stress and diagnosis of their mental health. To achieve those goals above, the questionnaire was used and the sample consisted of 600 students from general high schools in a large city, C and in a smaller city, A in Chungnam province through questionnaire and the conclusion, which was based on 582 proper questionnaires from the 600 questionnaires, through variable analysis, correlation analysis and multi-regression, is below. First, according to the information provided by respondents, the result showed the relationship between those background variables and the entrance exam stress and mental health level. As the students are more introverted and the parenting style is more authoritative, the entrance exam stress is higher and the mental health level is higher as the parenting style is more authoritative and the economic status is lower. In gender, the entrance exam stress level was high for male students in regard to parents pressure. For female students, it was due to the insufficient free time. In test performance, the good grade group showed high stress level when they don't have enough free time and the poor grade group showed high stress level when they have test tension and poor test performance. In character style, the introverted group showed high stress level in future uncertainty. In parenting style, the authoritative group showed significantly high level in all four sub-factors and there is no significant relationship with the stress level and economic statue. Female students reported higher mental health level than male students in somatization and depression. In academic achievement, the poor grade group showed high level in obsession, fear-anxiety and psychotism. In character style, the introverted group showed high level in sensitivity towards others and depression. And in parenting style, the authoritative group is higher in 9 sub-factors than the other two groups in the factor, economic status. The lower economic status group showed high mental health problem level in this order; in obsession, sensitivity towards others, depression, paranonia and psychotism. Second, the results revealed that there is a significant difference among the groups after comparing and analyzing the relationship between the mental health level according to the three groups, the first, second and third group divided by the degree of entrance exam stress. And the higher the entrance exam stress is, the higher the mental health problem level is. Verification showed that there was obvious difference among the groups. the entrance exam stress was positively correlated with the mental health level. The lack of free time, future uncertainty, test anxiety/poor test performance and parents pressure, these factors, in that order, were correlated with the mental health level. when the prediction variables which influenced on mental health are analyzed, test-anxiety/poor test performance was found to be related to mental health most. And after the factor, test-anxiety, future uncertainty and the lack of free time were listed(ranked), however results did not show any correlation with parents' pressure.

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Solving Time-dependent Schrödinger Equation Using Gaussian Wave Packet Dynamics

  • Lee, Min-Ho;Byun, Chang Woo;Choi, Nark Nyul;Kim, Dae-Soung
    • Journal of the Korean Physical Society
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    • 제73권9호
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    • pp.1269-1278
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    • 2018
  • Using the thawed Gaussian wave packets [E. J. Heller, J. Chem. Phys. 62, 1544 (1975)] and the adaptive reinitialization technique employing the frame operator [L. M. Andersson et al., J. Phys. A: Math. Gen. 35, 7787 (2002)], a trajectory-based Gaussian wave packet method is introduced that can be applied to scattering and time-dependent problems. This method does not require either the numerical multidimensional integrals for potential operators or the inversion of nearly-singular matrices representing the overlap of overcomplete Gaussian basis functions. We demonstrate a possibility that the method can be a promising candidate for the time-dependent $Schr{\ddot{o}}dinger$ equation solver by applying to tunneling, high-order harmonic generation, and above-threshold ionization problems in one-dimensional model systems. Although the efficiency of the method is confirmed in one-dimensional systems, it can be easily extended to higher dimensional systems.

Effects of γ-aminobutyric acid-enriched fermented sea tangle (Laminaria japonica) on brain derived neurotrophic factor-related muscle growth and lipolysis in middle aged women

  • Choi, Wook-chul;Reid, Storm N.S.;Ryu, Je-kwang;Kim, Yunsook;Jo, Young-Hong;Jeon, Byeong Hwan
    • ALGAE
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    • 제31권2호
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    • pp.175-187
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    • 2016
  • This study evaluated the effects of γ-aminobutyric acid (GABA)-enriched fermented sea tangle (GFST), as a functional food, on brain derived neurotrophic factor (BDNF)-related muscle growth and lipolysis, in a sarcopenic obesity high-risk group. Twenty-one middle-aged women (53-63 y) participated in this randomized, double-blind, placebo controlled study. Participants ingested either 1,000 mg of GFST (n = 10) or a sucrose placebo (CON) (n = 11) everyday, for 8 weeks. Subjects were asked to abstain from any regular exercise. Fasting venous blood samples, body composition and muscular strength were measured before and after supplementation period. Collectively, we demonstrated that GFST significantly decreased total fat mass and triglyceride in body composition, as well as significantly increasing serum BDNF (p < 0.001), angiotensin converting enzyme (p < 0.001), human growth hormone and insulin-like growth factor-1 levels (p < 0.05 and p < 0.05, respectively) accompanied by increased total lean mass (p < 0.01). Furthermore, the reported improvements in total work, knee extension and flexion at 60° s−1 (p < 0.05), and peak torque normalized to body weight of knee flexion at 60° s−1 (p < 0.05), support an ergogenic effect of GABA associated with increased growth factor levels. The use of GFST, as a functional food ingredient, to elicit anti-obesity effects and stimulate the release of muscle-related growth factors with increasing serum BDNF levels may provide a protective intervention for age-related degeneration such as sarcopenic obesity.