• 제목/요약/키워드: Independent/paired sample t-test

검색결과 74건 처리시간 0.027초

액션러닝 교수학습방법을 활용한 수업이 간호대학생의 간호리더십과 학업적 자기효능감, 셀프리더십에 미치는 효과 (The Effects of Lessons Using Action Learning Teaching and Learning Method on Nursing Leadership, Academic Self-Efficacy, and Self-Leadership of Nursing College Students)

  • 문숙자
    • 한국산학기술학회논문지
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    • 제21권1호
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    • pp.494-503
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    • 2020
  • 본 연구의 목적은 전통적 강의식 교수학습방법과 액션러닝 교수학습방법을 활용한 수업이 간호대학생들의 간호리더십과 학업적 자기효능감, 셀프리더십에 미치는 효과 차이를 확인하기 위함이다. 연구대상은 간호대학생을 대상으로 간호리더십 교과명 2학점, 15주 학사일정 중 주 2시간 8주간 액션러닝 학습방법을 통해 그에 따른 효과를 보기 위해 간호리더십과 학업적 자기효능감, 셀프리더십을 측정하였다. 일반 강의식 교수학습방법을 적용한 집단을 대조군으로 하였고, 액션러닝 교수학습방법을 적용한 집단을 실험군으로 선정하였다. 자료 분석은 실험군과 대조군의 간호리더십, 학업적 자기효능감, 셀프리더십과 각각의 하위영역의 차이는 독립표본 t-test로 분석하였으며, 사전, 사후 비교는 대응표본 t-test로 분석 하였다. 연구결과는 액션러닝 교수학습방법 적용 후 학업적 자기효능감(t=.828, p<.000), 셀프리더십(t=8.92, p<.000)은 실험군과 대조군에서 유의한 차이가 있는 것으로 나타났으며, 하위영역으로 간호리더십에서는 리더십 발휘(t=5.06, p<.000), 학업적 자기효능감에서는 자신감(t=2.04, p<.043), 자기조절 효능(t=.126, p<.000)에서 유의한 차이를 보였다. 또한 셀프리더십에서는 행동중심적 전략(t=8.74, p<.000), 인지적 전략(t=7.70, p<.000) 모두 유의한 차이가 있는 것으로 확인되었다. 본 연구의 결론은 최근 대두되고 있는 액션러닝 교수학습방법을 교과과정에 적용하여 그 효과를 검증하였다는 점에서 의의가 있으며, 향후, 액션러닝 교수학습방법을 다양한 환경의 교과과정과 학생들의 수준을 고려하여 적용하고, 그에 따른 효과를 확인하는 연구와 다양한 변수들을 추가하여 광범위한 연구가 필요하리라 본다.

커피음용이 단기간 근육작용 활성화에 미치는 영향 (Effects of Coffee on Activation of Muscular Working During a Short Period)

  • 이준우;조강희
    • 한국전문물리치료학회지
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    • 제14권3호
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    • pp.72-80
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    • 2007
  • The purpose of this study was to verify the effects on fine motor, muscle strength (hand-grip), explosive muscular strength (vertical jump) and muscular endurance (sit-up) after ingesting coffee. Hence this study targeted a sample group of 38 healthy men in their twenties, without cardiac disorders and muscle disorders and none of them were hypersensitive to caffeine with symptoms such as palpitation and dyspnea. Nineteen of them ingested coffee, whereas the other nineteen men ingested decaffeinated coffee at the same amount. The amount of coffee was controlled by weight so as to regulate intake to 6 mg caffeine per kg. Research material was evaluated through O'Conner's finger dexterity test, hand-grip strength test, vertical jump test and sit-up test. The data were analyzed by means of paired t-test and ANCOVA. The material was then, analyzed by means of two-way ANOVA in order to verify the effect of one or two cups of coffee on fine motor and hand-grip strength. All parameters were measured by an independent observer. The results were as follows: There were no significant differences to fine motor, hand-grip strength, vertical jump, sit-up before and after drinking decaffeinated coffee, but there was a difference to those before and after drinking caffeine coffee. There was no significant difference to hand dexterity and hand-grip strength in one or two cups of coffee. Intake of a certain dosage of caffeine effects activation of muscles working in a short period based on the results. As a consequence, intake of certain dosages of caffeine was beneficial to enhance efficiency of activity during exercises, but it is will be difficult to obtain the desired result with only one or two cups of coffee.

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Effects of Lumbar Stabilization Exercise Program on the Ratio of Abdominal and Back Muscle Strength in White Collar Workers

  • Kim, Bo-Ram;Park, Sun-Wook;Lee, Han-Suk
    • The Journal of Korean Physical Therapy
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    • 제27권6호
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    • pp.419-424
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    • 2015
  • Purpose: This study aimed to evaluate the effects of lumbar stabilization exercise on the abdominal muscle-back muscle ratio in white-collar workers. Methods: Forty white-collar workers without any pain who worked at an information technology (IT) company located in the Gyeonggi province were included in this study. Of these, 20 subjects were randomly allocated to the lumbar stabilization exercise group, whereas the remaining 20 were randomly allocated to the control group. The lumbar stabilization exercise group performed a 40-minute-long exercise once a week for 8 weeks. The strength of the abdominal and back muscles was measured using the CENTAUR 3-D Spatial Rotation Device (BFMC, Germany). Data analysis was conducted using SPSS 18.0 for Windows. The Paired t-test was performed to compare the values measured before and after exercise within each group. The independent sample t-test was performed to analyze the differences between the 2 groups. The statistical significance for all the analyses was set at .05. Results: The strength of the abdominal muscles after the exercise significantly differed between the lumbar stabilization exercise group and the control group (p<0.05). However, the increase in the abdominal muscle-back muscle ratio was significant in only the lumbar stabilization exercise group (p<0.05), but not in the control group (p>0.05). Conclusion: The improvement of the abdominal muscle-back muscle ratio through lumbar stabilization exercise may have positive effects on lumbar stabilization. Moreover, lumbar stabilization exercise is considered beneficial for the prevention of back pain and musculoskeletal diseases.

Effects of Application of Social Marketing Theory and the Health Belief Model in Promoting Cervical Cancer Screening among Targeted Women in Sisaket Province, Thailand

  • Wichachai, Suparp;Songserm, Nopparat;Akakul, Theerawut;Kuasiri, Chanapong
    • Asian Pacific Journal of Cancer Prevention
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    • 제17권7호
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    • pp.3505-3510
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    • 2016
  • Cervical cancer is a major public health problem in Thailand, being ranked second only to breast cancer. Thai women have been reported to have a low rate of cervical cancer screening (27.7% of the 80% goal of WHO). We therefore aimed to apply the social marketing theory and health belief model in promoting cervical cancer screening in Kanthararom District, Sisaket Province. A total of 92 from 974 targeted women aged 30-60 years were randomly divided into two groups. The experimental group underwent application of social marketing theory and a health belief model program promoting cervical cancer screening while the control group received normal services. Two research tools were used: (1) application of social marketing theory and health belief model program and (2) questionnaire used to evaluate perceptions of cervical cancer. Descriptive and inferential statistics including paired sample t-test and independent t-test were used to analyze the data. After the program had been used, the mean score of perception of cervical cancer of experimental group was at a higher level (${\bar{x}}=4.09$; S.D.=0.30), than in the control group (${\bar{x}}=3.82$; S.D.=0.20) with statistical significance (p<0.001). This research demonstrated an appropriate communication process in behavioral modification to prevent cervical cancer. It can be recommended that this program featuring social marketing and the health belief model be used to promote cervical cancer screening in targeted women and it can be promoted as a guideline for other health services, especially in health promotion and disease prevention.

신경근전기자극치료가 뇌졸중 환자의 연하장애에 미치는 효과 (The Effects of Neuromuscular Electrical Stimulation for Dysphagia in Stroke Patients)

  • 김정자;이종원
    • 대한물리치료과학회지
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    • 제26권2호
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    • pp.13-23
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    • 2019
  • Background: The purpose of this study was to provide the basis for the treatment intervention by identifying the treatment effect when rehabilitation intervention is applied to patients with dysphagia due to stroke and by comparing the results of the treatment mediation according to the differences of the treatment methods and frequency. Design: Randomized Controlled Trial. Methods: 30 people diagnosed with dysphagia due to stroke were divided in accordance with the differences in treatment mediation techniques and treatment frequency- traditional swallowing rehabilitation coupled with neuromuscular electrical stimulation group and only neuromuscular electrical stimulation group/ 5 times per week group and 2 times per week group, and ten weeks of treatment intervention was performed. Paired t test was employed to show the efficacy of treatment intervention, Independent sample t test was used to compare the results according to difference and number of treatment intervention techniques. Results: There was a significant positive effect of treatment on traditional swallowing rehabilitation coupled with neuromuscular electrical stimulation group, only neuromuscular electrical stimulation group, 5 times per week group and 2 times per week group (p<0.05). There was no statistically significant difference in treatment effect between traditional swallowing rehabilitation coupled with neuromuscular electrical stimulation group and only neuromuscular electrical stimulation group (p<0.05). There was no statistically significant difference in treatment effect between 5 times per week group and 2 times per week group (p<0.05). Conclusion: There was no significant difference according to the technique or number of treatments of swallowing rehabilitation treatment interventions, but it was confirmed that rehabilitation intervention for dysphagia showed positive treatment effect.

Color changes of ceramic veneers following glazing with respect to their composition

  • Kim, Sung-Joon;Woo, Jae-Man;Jo, Chan Woo;Park, Ju-Hee;Kim, Soo Kyung;Kahm, Se Hoon
    • The Journal of Advanced Prosthodontics
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    • 제11권1호
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    • pp.16-22
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    • 2019
  • PURPOSE. The purpose of this study was to compare the translucency and color changes of ceramic laminate veneers of different composition following glazing process. MATERIALS AND METHODS. $10mm{\times}10mm$ square specimens of 0.6 mm and 1.0 mm thicknesses were fabricated with IPS e.max Press (EM) and IPS e.max ZirPress (ZP) (n=10 per group). The color coordinates (CIE $L^*$ $a^*$ $b^*$) of the specimens were recorded with a colorimeter before and after glazing. The color changes and translucency parameter (TP) were calculated. For the comparisons with the composition and thicknesses between the 'not glazed' and 'glazed' groups, statistical analyses were done through paired T-test, independent two-sample T-test, and multiple regression analysis using SPSS 18.0 (P<.05). RESULTS. The TP of 0.6 mm EM was higher than that of 0.6 mm ZP. Total color difference (${\Delta}E^*$) between bare and glazed specimens of 1.0 mm EM was greater than that of 1.0 mm ZP with statistical significance. Following glazing, specimens from all groups showed statistically significant amount of decrease in $L^*$ and $a^*$, and statistically significant increase in $b^*$. The result of multiple regression analysis of EM and ZP showed that ${\Delta}L^*$ improved ${\Delta}E^*$. CONCLUSION. Within the limitations of present study, we conclude that translucency and color of ceramic laminate veneers change significantly after glazing process, and the nature and amount of changes vary with different compositions.

수정된 측면 교각운동이 정상 성인 몸통근육의 두께에 미치는 영향 (The Effect of a Modified Side-Bridge Exercise on the Thickness of Trunk Muscles in Healthy Adults)

  • 박재철;김용남
    • PNF and Movement
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    • 제19권1호
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    • pp.127-135
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    • 2021
  • Purpose: The purpose of this study was to determine the effect of the side-bridge exercise on the thicknesses of the external and internal obliques, the transverse abdominis, and the erector spinae, which are some of the trunk muscles of healthy adult males and females. Methods: There were 30 subjects divided into two groups with 15 subjects in the modified side-bridge exercise group and 15 subjects in the bridge exercise group. The changes in each variable were analyzed before the exercise, after three weeks, and after six weeks of exercise using a two-way repeated analysis of variance. The significance level was set at 0.05. When there was any interaction between the time of measurement and each group, a paired t-test was conducted to find the difference within groups and an independent-sample t-test was conducted to find the difference between groups. The significance level for both tests was set at 0.01. Results: There was a significant difference in the external and internal obliques and the erector spinae according to changes over time and the interactions between the time and groups (p < 0.05). However, there was a significant difference in the transverse abdominis only according to the interaction between the length of times (p < 0.05). Conclusion: The study results indicated that the modified side-bridge exercise significantly increased the thickness of the external and internal obliques and the erector spinae. This suggests the usability of the exercise in lumbar stabilization exercises in future studies and clinical fields.

PNF 목 굽힘 운동과 Curl-up 운동이 만성 뇌졸중 환자의 배근육의 활성도와 몸통 조절 및 균형에 미치는 효과 비교 (Comparison of the Effects of PNF Neck Flexion and Curl-up Exercises on Abdominal Muscle Activity, Trunk Control, and Balance in Chronic Stroke Patients)

  • 김경돈;김현수
    • 대한통합의학회지
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    • 제8권4호
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    • pp.171-181
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    • 2020
  • Purpose : The purpose of this study was to investigate the effects of curl-up and proprioceptive neuromuscular facilitation (PNF) neck flexion exercises on stroke patients' trunk muscle activity, ability to control the trunk, and balance by comparing two exercise methods. Methods : The study involved patients who had been diagnosed with stroke based on the results of computerized tomography or magnetic resonance imaging at O Hospital in Daegu, South Korea, between January and July 2020. In total, 30 subjects were selected and by flipping a coin, randomly assigned to an experimental group (n=15) that performed PNF neck flexion exercises and a control group (n=15) that performed curl-up exercises. Both groups received traditional rehabilitation therapy for 30 minutes a day five times a week for a six-week period. In addition, the experimental group performed PNF neck flexion exercises and the control group curl-up exercises for 15 minutes a day five times a week over the same period. The subjects' muscle activity in the rectus abdominis (RA), external oblique (EO), and internal oblique (IO) were measured before and after the experiment. The subjects' trunk impairment scale (TIS) and Berg balance scale (BBS) scores were also assessed. Paired t test was performed to measure the amount of statistical change before and after intervention in both groups. An independent sample T test was performed to measure the amount of statistical change between the two groups. Results : Both groups experienced statistically significant increases in their RA, IO and EO muscle activity, total TIS scores, and total BBS scores after the intervention. No statistically significant differences in the changes before and after the intervention were found for any of the resulting values between the two groups. Conclusion : A comprehensive review of the study's results suggested that neck flexion exercises using the PNF irradiation concept and curl-up exercise are effective in increasing stroke patients' abdominal muscle activity and improving trunk control ability and balance in chronic stroke patients.

도수 교정과 안정화 운동 복합적용이 만성 허리통증 환자의 통증과 척추 만곡도에 미치는 영향 (Effect of combined application of manipulation and stabilization exercises on pain and spinal curvature in patients with chronic back Pain)

  • 장재선;김용남
    • 대한물리치료과학회지
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    • 제29권2호
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    • pp.38-47
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    • 2022
  • Background: The purpose of this study was to investigate the effect of the combined application of manipulation and stabilization exercises on pain and spinal curvature in patients with chronic back pain. Design: Randomized controlled trial Methods: The research subjects included 24 women in their 40s and 50s who have chronic back pain. The sample was evenly divided into an experimental group, which received the combined application of manipulation and stabilization exercises, and a control group, which received stabilization exercises only. The 30-minute intervention was applied five times a week for eight weeks. A bivariate repeated measures analysis of variances was conducted to identify the differences between the two groups before the experiment, after the fourth week, and at the end of the eight-week experiment. The level of statistical significance was set at.05. This analysis examined the within-group changes and the between-group changes using a paired t-test and an independent t-test, respectively. Results: Changes in pain differed significantly depending on the time of the measurement, the interaction between the time of the measurement and each group, and between the two groups (p<.05). Changes in the curvature of the bones of the neck, the bones of the back, and the lumbar vertebrae differed significantly depending on the time of the measurement and the interaction between the time of the measurement and each group (p<.05). Conclusion: The combined application of manipulation and stabilization exercises demonstrated a positive effect on changes in pain and spinal curvature, and the method is expected to be a useful intervention for reducing pain and improving spinal curvature in patients with back pain.

등뼈와 엉덩관절 가동성운동을 겸한 허리 안정성 운동이 만성 허리통증 여성 환자들의 통증과 균형에 미치는 영향 (Effects of Thoracic and Hip Joint Mobility Exercise and Lumbar Stability Exercise on Pain and Balance in Women with Chronic Back Pain)

  • 최윤경;김영민
    • 대한정형도수물리치료학회지
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    • 제29권2호
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    • pp.1-10
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    • 2023
  • Background: The purpose of this study was to evaluate the pain, static balance, and dynamic balance abilities of women with chronic low back pain by performing thoracic and hip joint mobility exercises and lumbar stability exercises. Methods: The subjects of this study were 20 adult women with low back pain who lived in C city for more than 12 weeks. The experimental group performed the thoracic and hip mobility exercises with lumbar stability exercises and the control group performed the lumbar stability exercise with general exercise program. Both groups participated in the exercise program three times a week for six weeks, from December 20, 2022 to March 7, 2023. The balance ability were measured using BT4, and pain was measured using visual analog scale (VAS). The collected data were analyzed by independent sample t-test and paired t-test using SPSS version 23.0 program. Results: After 6 weeks of intervention, there was a significant change in VAS between the experimental group and the control group, and there was no difference between the two groups (p>.05). In the case of balance ability, there was a no significant increase in the experimental group (p>.05). Conclusion: Thoracic and hip joint mobility exercises and lumbar stability exercises for adult female patients with chronic low back pain may be partially effective in static balance and dynamic balance.

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