• 제목/요약/키워드: Paired T-Test

검색결과 2,809건 처리시간 0.036초

요통완화프로그램이 만성 요통호소 여교사의 배근력, 통증정도, 기능장애에 미치는 효과 (An Effect of Low Back Pain Relieving Program on the Back Muscle Strenght, Intensity of Pain, Disability Level in Elementary School Women Teacher)

  • 최순영
    • 여성건강간호학회지
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    • 제6권1호
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    • pp.117-128
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    • 2000
  • The purpose of this study was to examine the effect of low back pain relieving program on back muscle strength, intensity of pain, low back disability level in elementary school teachers who have low back pain. subjects were elementary school women teachers who worked at eight elementary school located in Seoul. Intended subjects size were seventy consist of thirty-four experimental group(three schools) and thirty-six control group(five schools), but actual subjects size was forty-four. Among the forty-four patients subjects, twenty-three were experimental group receiving health education about right postures, etiologies of low back pain, diagnosis of low back pain and exercise program composed of muscle strengthening exercise, stretching exercises and twenty-one were control group. During the 8 weeks program, the subjects were received two times education and six times group exercise practices in 1st week and three times per week group exercise practices, two times education in other 7 weeks. This study as carried out from April 1, 1999 to June 30, 1999. Back muscle strength was measured by back muscle strength measuring machine and the intensity of pain were measured by the Visual Analogue Scale(VAS), and level of disability was measured by Oswestry low back pain disability scale. Study measurements were taken before and after 8 week exercise program. Data were analyzed using paired t-test, and ANCOVA. The results were summarized as follows. 1. After low back relieving program, back muscle strength was increased significantly(p=0.000) and there was significant difference in back muscle strength change between experimental group and control group(p=0.002). 2. After low back pain relieving program, pain on anterior bending, pain on posterior bending were decreased significantly than measurements before the program(p=0.000 p=0.000) and there was significant difference in pain on anterior bending and posterior bending change between experimental group and control group(p=0.000, p=0.000). 3. After low back pain relieving program, Oswestry disability scale scores were decreased significantly(p=0.000, p=0.000) but there was no significant difference in Oswestry disability score change between experimental group and control group.

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남자 노인에서 에너지 섭취 조사를 위한 24시간 회상법의 정확도 평가 -이중표식수법을 사용하여- (Accuracy of 24-hour Diet Recalls for Estimating Energy Intake in Elderly Men using the Doubly Labeled Water Method)

  • 전지혜;고나영;이모란;;김은경
    • 대한지역사회영양학회지
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    • 제23권6호
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    • pp.516-524
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    • 2018
  • Objectives: This study assessed the accuracy of the 24-hour diet recall method for estimating the energy intake of elderly men using the doubly labeled water as a reference method. Methods: Seventeen subjects (mean age $72.5{\pm}3.9years$), who maintained the same body weight during the two weeks study period, were included in this study. Three 24-hour diet recalls (two weekdays and one weekend) were obtained over a 14 day period to estimate the mean energy intake. The total energy expenditure was measured over the same 14 days using the doubly labeled water method. The total energy intake and total energy expenditure were compared by paired t-test. Results: The total energy intake from the 24-hour diet recalls method was $2536.7{\pm}350.6kcal/day$, and the total energy expenditure from the doubly labeled water method was $2659.8{\pm}306.8kcal/day$. The total energy intake was slightly under-reported by $-123.2{\pm}260.8kcal/day$ (-4.4%). On the other hand, no significant difference was observed between the total energy intake and total energy expenditure of the subjects (p=0.069). The percentage of accurate predictions was 64.7%. The correlation between the total energy intake and total energy expenditure was statistically significant (r=0.697, p<0.005). Conclusions: The present study supports the use of the 24-hour diet recall method to estimate the mean energy intake in elderly men group. More studies are needed to assess the validity of 24-hour diet recall method in other population groups, including elderly women, adults and children.

교육실습을 통한 예비 유아교사들의 <수업전문성>에 대한 인식 및 변화 탐색 연구 (Pre-service Early Childhood Teachers' Improvement of Perception on Teaching Professionalism through Early Childhood Teaching Practice Experience)

  • 이승은
    • 한국보육학회지
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    • 제19권2호
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    • pp.1-17
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    • 2019
  • 본 연구는 수업전문성에 영향을 미치는 과정으로서 교육실습 과정을 경험한 예비 유아교사들의 수업전문성에 대한 인식 및 변화를 탐색하고, 예비 교사들의 수업전문성을 높일 수 있는 효율적인 교육과정을 운영을 위한 시사점 도출을 목적으로 실시되었다. 연구대상은 N시의 4년제 대학 유아 교육학과에서 "교육실습"을 이수한 유아교육학과 4학년 학생 41명 및 지도 교사 41명이었고 예비 교사들의 수업전문성에 대한 인식과 변화를 알아보기 위하여 설문조사를 하였고, 변화를 탐색하기 위해서 개방형 문항을 내용 분석을 통하여 질적 분석을 수행하였다. 연구결과, 첫째, 수업전문성 인식 총점 및 하위요인들의 평균값의 점수가 유의미하게 증가하였다. 실습 초반에는 실제 수업의 진행 및 유아와의 상호작용에 다소 어려움을 겪지만 실습기간 중, 지도교사의 안내를 받으며 다양한 유형의 실전수업을 경험하면서, 실습이 마무리 될 무렵에는 수업전문성에 대한 인식이 유의미하게 변화하여 교육실습 경험이 예비교사들의 수업전문성 발달에 긍정적인 영향을 미치는 것으로 나타났다. 둘째, 수업전문성 인식 변화를 탐색하기 위하여 예비교사들이 기술한 개방형 설문을 내용분석 한 결과, 예비교사들은 실습과정에서 실제 수업을 처음 수행한 후에는 자신의 부족한 점 보완해야 할 점 등을 인식하고, 이를 바탕으로 가장 마지막으로 이루어진 수업에서는 첫번째 수업에서 나타난 문제점의 발전 방안을 찾고, 적용해보는 과정을 통해 발전된 모습을 스스로 발견하면서 수업전문성 발달이 이루어지는 모습이 드러났다. 셋째 실습 지도교사가 강조한 수업전문성을 내용 분석한 결과, 지도교사들은 수업의 청사진으로서의 수업계획안 작성, 수업의 흐름을 매끄럽게 하기 위한 발문 구성, 철저한 준비를 바탕으로 한 융통성 있는 수업의 운영을 강조하는 것으로 나타났다.

국가직무능력표준(NCS) 기반 채용에서 직업기초능력에 대한 취업준비생의 인식 분석 (An Educational Needs Analysis for Job Applicants Relating to the Core Competency Used in National Competency Standards(NCS-Based) Recruitment)

  • 김혜영;백송이;윤재희;박인우
    • 한국산학기술학회논문지
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    • 제20권7호
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    • pp.133-144
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    • 2019
  • 본 연구의 목적은 국가직무능력표준(NCS) 기반 채용 환경에서 직업기초능력에 대한 취업준비생의 인식 차이를 분석하고, 진로 및 취업교육 설계를 위한 정보를 얻는 것이다. 연구 수행을 위해 전문대, 4년제 대학의 취업준비생 355명을 대상으로 설문조사를 실시하고 직업기초능력의 영역별 중요도와 현재 수준의 차이를 분석하였다. 또 IPA분석을 활용하여 교육 요구도를 확인하였다. 연구결과, 직업기초능력 10개 영역 모두 중요도와 현재 수준 사이의 유의미한 차이를 보였다. IPA분석 결과, 두 집단에서 공통적으로 강화해야 하는 영역은 대인관계능력, 의사소통능력, 수리능력, 문제해결능력, 자기개발능력으로 나타났으며, 현재 과잉상태로 인식되는 영역은 자원관리능력으로 나타났다. 두 집단별 요구도를 확인한 결과, 전문대 취업준비생은 문제해결능력을, 4년제 대학 취업준비생은 의사소통능력, 대인관계능력, 정보능력을 집중적으로 강화해야 하는 것으로 나타났다.

스쿼트 운동 시 발목 관절에 키네시오 테이프의 적용이 넙다리 네갈래근과 뒤넙다리근의 활성에 미치는 영향 (Effects of Kinesiology tape in ankle joint of quadriceps and hamstring muscles activation during squat exercise)

  • 박재흥;이승희;김소정;조승주;박현희;이유진;심혜지;최보람
    • 대한물리치료과학회지
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    • 제28권2호
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    • pp.57-64
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    • 2021
  • Background: During squat exercises, Ankle joint stability during squat movement transfers forces produced by unstable supports or various loads to the leg joints and trunk, reducing the risk of injury; therefore, a reference is needed for correct ankle joint posture during squat exercises. The purpose of this study was to examine the effect of ankle joint stability on quadriceps femoris and hamstring activation during squat exercises. Design: Quasi-experiment one group pretest-posttest design. Methods: The participants in this study were 20 volunteers who performed squat exercises with and without kinesiology tape. We measured quadriceps femoris and hamstring activation using surface electromyography. The ankle joint was stabilized with kinesiology tape using the ankle balance taping (ABT) method. A paired t-test was performed to compare differences between taping conditions. Results: Vastus medialis and vastus lateralis activation were greater following squat exercises with kinesiology tape than without; however, the difference was not significant. Medial and lateral hamstring activation was not significantly different between taping conditions. Conclusion: Although it is difficult to maintain stability using kinesiology tape alone, ankle joint stability is believed to affect quadriceps femoris muscle activity, which increases the effectiveness of the squat exercise.

16주간 복합운동이 Sarcopenic Obesity 여성고령자의 신체조성 및 심폐체력에 미치는 영향 (Effects of Combined Exercise on Body Composition and Cardiovascular fitness in Sarcopenic Obesity Elderly Women)

  • 정주하;양점홍
    • 한국노년학
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    • 제32권3호
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    • pp.703-714
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    • 2012
  • 고령기의 생활을 위협하는 비만 여성고령자를 대상으로 sarcopenia 동반에 따른 16주간의 운동중재가 신체조성 및 심폐체력에 미치는 변화를 알아보기 위한 실험이다. 비만 여성고령자를 sarcopenia 동반유무에 따라 sarcopenic obestiy group(SOG)과 non-sarcopenic obesity group(NOG)으로 나누어 16주간, 주 3회, 50-60분간 복합운동 실시 후 신체조성 및 심폐체력에 미치는 영향을 분석하여 다음과 같은 결론을 얻었다. 신체조성의 경우 시기와 그룹간 상호작용효과는 fat free mass(FFM)에서만 나타났으며, 운동 전 후의 변화에서는 SOG의 경우 % body fat은 감소하였고, FFM과 ASM에서는 차이가 없었다. NOG의 경우 %body fat은 감소하였으며, FFM과 ASM에서는 증가하였다. 심폐체력에서는 두 그룹 모두 $\dot{V}O2peak$가 증가하였다. 따라서, sarcopenic obesity 여성고령자가 non-sarcopenic obesity 여성고령자에 비해 근육량(FFM, ASM)에서 운동효과가 지연되는 것을 발견할 수 있었다.

하천-호수 복합시스템에서 청수현상 발생 특성 (Behavior of Clear-water Phase in Hybrid Water System with Fluvial and Lacustrine Characteristics)

  • 심연보;변명섭;김재현;유순주;임종권;황순진
    • 생태와환경
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    • 제54권4호
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    • pp.315-326
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    • 2021
  • 팔당호에서 청수현상 발생은 지점별로 다른 양상을 보였으며, 발생시기는 3~12월로 연중 발생하는 것으로 나타났고, 주로 3~6월에 발생하였다. 청수기 발생빈도는 팔당댐앞, 경안천수역, 남한강수역, 북한강수역 순으로 나타났다. 청수현상 발생시 주요 요인인 투명도, 동물플랑크톤 현존량, Chl-a와 환경요인 상관분석 결과 수리·수문요인인 강우량, 체류시간은 투명도 및 탁도와 유의한 상관관계를 나타내 강우로 인한 체류시간의 변화가 청수현상을 좌우할 수 있는 것으로 나타났다. 또한 투명도는 청수기를 야기하는 것으로 알려진 동물플랑크톤 중 지각류 현존량 및 점유율과 유의한 상관관계를 나타냈으며, 지각류 현존량 및 점유율은 수온과 유의한 상관관계를 나타내 봄철 수온의 상승에 따른 지각류의 발생이 청수현상 발생을 야기할 수 있는 것으로 나타났다. 이에 따라 수리조건이 정체형 호수와 다른 하천형의 호수에서는 청수현상이 결빙기 이후 봄철뿐만 아니라 동일한 수계 내에서도 지점별 특성에 따라 다르게 나타날 수 있으며, 수체가 안정화될 시에 동물플랑크톤(지각류)의 증가, 식물플랑크톤 현존량 감소, 투명도가 증가하는 청수현상이 조건이 충족될 시 계절에 불문하고 연중 발생할 수 있는 것으로 나타났다.

Profile and Outcome of Management of Brain Tumours in Kaduna Northwestern Nigeria

  • Danjuma, Sale;Dauda, Happy Amos;Kene, Aghadi Ifeanyi;Akau, Kache Stephen;Jinjiri, Ismail Nasiru
    • Journal of Korean Neurosurgical Society
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    • 제65권5호
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    • pp.751-757
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    • 2022
  • Objective : Tumours of the brain are a rare occurrence accounting for approximately 2% of all neoplasms in adults. Few studies have been done in Nigeria on the profile of brain tumours. The aim of this study is to determine the profile of brain tumours in general and determine the change in Kanofsky Performance Score (KPS) after treatment. Methods : This is a prospective hospital-based study in Kaduna. All consecutive patients over 18 years of age with diagnosis of brain tumours from January 2016 to December 2019 were included in the study. Demographic and clinical data was collected using a proforma during the study. Patients who received treatment were followed up for 12 months. The primary outcome data was the difference in the quality of life as measured by KPS at the point of first contact and at 1-month after treatment and at 12-month follow up. Data obtained was analysed with SPSS version 25.0 for Windows. Descriptive statistics was done to determine the profile. Paired t-test at 95% confidence interval was done to check for significant correlation between the mean KPS. Results : A total of 39 consecutive patients were included in the study. There was a slight male preponderance with a M : F of 1.17 : 1. Meningioma and metastasis were more common in females while gliomas and pituitary tumours were more common in males. The mean age of patients was 49.8 years and standard deviation of 11.8 years. Pituitary tumours were the most common tumours. The most common location of the tumour was frontal lobe followed by the pituitary gland. The mean duration of symptoms before neurosurgical consultation was 38 weeks. The most common presenting symptoms of patient with brain tumour was headache. The quality of life improve compare to the baseline in 81% of patient at discharge and at 1 year follow up. The overall mortality rate was 25.6%. Conclusion : The most common brain tumour in our study is pituitary tumour. Most patients present late. The most common presenting symptoms is headache. There is significant improvement in the KPS of patients following treatment. The overall mortality rate at 1-year post treatment is 25.6%.

Comparison of total energy intakes estimated by 24-hour diet recall with total energy expenditure measured by the doubly labeled water method in adults

  • Kim, Eun-Kyung;Fenyi, Justice Otoo;Kim, Jae-Hee;Kim, Myung-Hee;Yean, Seo-Eun;Park, Kye-Wol;Oh, Kyungwon;Yoon, Sungha;Ishikawa-Takata, Kazuko;Park, Jonghoon;Kim, Jung-Hyun;Yoon, Jin-Sook
    • Nutrition Research and Practice
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    • 제16권5호
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    • pp.646-657
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    • 2022
  • BACKGROUND/OBJECTIVES: The doubly labeled water (DLW) method is the gold standard for estimating total energy expenditure (TEE) and is also useful for verifying the validities of dietary evaluation tools. In this study, we compared the accuracy of total energy intakes (TEI) estimated by the 24-h diet recall method with TEE obtained using the doubly labeled water method. SUBJECTS/METHODS: This study involved 71 subjects aged 20-49 yrs. Over a 14-day period, three 24-h diet recalls per subject (2 weekdays and 1 weekend day) were used to estimate energy intakes, while TEE was measured using the DLW method. The paired t-test was used to determine the significance of differences between TEI and TEE results, and the accuracy of the 24-h recall method was determined by accuracy predictions percentage, root mean square error, and bias. RESULTS: Average study subject age was 33.4 ± 8.6 yrs. The association between TEI and TEE was positive and significant (r = 0.463, P < 0.001), and the difference between TEI (2,084.3 ± 684.2 kcal/day) and TEE (2,401.7 ± 480.3 kcal/day) was also significant (P < 0.001). In all study subjects, mean TEI was 12.0% (307.5 ± 629.3 kcal/day) less than mean TEE, and 12.2% (349.4 ± 632.5 kcal/day) less in men and 11.8% (266.7 ± 632.5 kcal/day) less in women. Rates of TEI underprediction for all study subjects, men, and women, were 60.5%, 51.4%, and 66.7%, respectively. CONCLUSIONS: This study shows that 24-h diet recall underreports energy intakes. More research is needed to corroborate our findings and evaluate the accuracy of 24-h recall with respect to additional demographics.

호흡근훈련 유무에 따른 안정화 운동이 건강한 성인의 호흡 기능과 자세 동요에 미치는 영향 (Effects of Stabilization Exercise with and without Respiratory Muscle Training on Respiratory Function and Postural Sway in Healthy Adults)

  • 서혜리;안덕현;김미현;고민주;오재섭
    • 대한통합의학회지
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    • 제11권3호
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    • pp.25-33
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    • 2023
  • Purpose : Stabilization exercise and respiratory muscle training are used to train trunk muscles that affect postural control and respiratory function. However, there have been no studies that combine stabilization exercise and respiratory muscle training. The purpose of this study is to investigate effects of stabilization exercise with and without respiratory muscle training on respiratory function and postural sway. Methods : Fifteen healthy adults were recruited for this experiment. All the subjects performed stabilization exercise with and without respiratory muscle training. For stabilization exercise with respiratory muscle training, the subjects sat on a gym ball wearing a stretch sensor. The subjects inspire maximally as long as possible during lifting one foot off the ground, alternately for 30 seconds. The stretch sensor was placed on both anterior superior iliac spine (ASIS), and the stretch sensor was used to monitor inspiration. For stabilization exercise without respiratory muscle training, the subjects sat on a gym ball and lifted one foot off the ground, without respiratory muscle training. Kinovea program used to investigate postural sway tracking during exercise. The maximum inspiratory pressure (MIP) and maximum expiratory pressure (MEP) were measured using a spirometer to investigate changes of respiratory muscle strength before and after exercise. A paired t-test was used to determine significant differences postural sway tracking, MIP, and MEP between stabilization exercise with and without respiratory muscle training. Results : There were significantly lower a distance of postural sway tracking during stabilization exercise with respiratory muscle training, compared with stabilization exercise without respiratory muscle training (p<.05). The MIP and MEP were significantly increased after stabilization exercise with respiratory muscle training compared with before stabilization exercise with respiratory muscle trianing (p<.05). Conclusion : The results of this study suggest that stabilization exercise with repiratory muscle training would be recommended to improve postural control and respiratory muscle strength.