• 한국산학기술학회논문지
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• 제16권12호
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• pp.8568-8575
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• 2015

본 연구는 상황리더십 프로그램이 간호리더의 비판적 사고, 코칭, 임파워먼트를 높이는데 도움이 되는지를 알아보기 위한 실험연구이다. 표본 수는 G*Power프로그램을 이용해 추출하였고, 대상자는 대도시에 소재한 대학병원의 간호 리더 54명과 간호사 342명이었다. 자료 분석은 SPSS WIN 18.0을 사용하여 빈도분석, t-test, ${\chi}^2$-test, repeated measures ANOVA로 하였으며, 연구의 결과는 다음과 같다. 1. 상황리더십 프로그램으로 인해 비판적 사고는 실험군이 유의하게 증가하였고 대조군은 유의하게 감소하였다. 2. 상황리더십 프로그램으로 인해 코칭은 실험군이 유의하게 증가하였고 대조군은 유의하게 감소하였다. 3. 상황리더십 프로그램으로 인해 임파워먼트는 실험군이 유의하게 증가하였고 대조군은 유의하게 감소하였다. 따라서 상황리더십 프로그램은 간호리더의 비판적 사고, 코칭, 임파워먼트에 효과가 있다고 할 수 있다. 앞으로 상황리더십 프로그램을 간호사에게 적용시키면 임상 중에 발생한 상황의 대처나 조직생활에 있어서의 비판적 사고, 코칭, 임파워먼트 증진에 도움이 될 것 이다.

• Journal of the Korean Data and Information Science Society
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• 제21권4호
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• pp.641-650
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• 2010

본 연구는 퇴행성 슬관절염 여성 30명을 대상으로 물리치료와 멀리건 도수치료를 병용하여 4주간 실시한 후 운동전, 2주 후, 그리고 4주 후에 통증과 근 기능평가 측정에 미치는 효과에 대해 알아보기 위해 실시하였다. 본 연구의 측정은 시각적 상사 척도 검사, 근력 검사, 근 기능 검사, 그리고 협응력/균형감을 검사하였다. 반복측정자료 분산분석 결과, 물리치료와 멀리건 도수치료를 병용한 실험군에서 중재기간에 따라 효과적 이었으며, 시간과 그룹 간 상호작용도 있었다. 퇴행성 슬관절염의 통증과 근 기능평가를 개선시키기 위해 물리치료와 멀리건 도수치료 병용 시 효과적이란 것을 검증하였다.

• PNF and Movement
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• 제18권3호
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• pp.425-433
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• 2020

Purpose: The purpose of this study was to investigate the effect of 7Hz vibration on the thickness of the rectus femoris, medial femur, rectus femoris tendon, and Achilles tendon. Methods: The statistical methods before and after working around the average value of each of the legs included repeated measures ANOVA. The subjects were 26 males residing in the N area, and we measured the change in muscle thickness and tendon thickness before, four weeks, and eight weeks after the experiment in two groups of 13 subjects each. The analysis method was a two-way repeated measurement variance analysis (ANOVA) with a significance level of 0.05 Results: The rectus femoris, medial broad muscle, rectus femur, and Achilles tendon showed significant increases in the interaction between the periods as well as between the periods and groups (p < 0.05). Conclusion: As a result of this study, the 7Hz vibration had a positive effect on the thickness of the rectus femoris and the vastus medialis muscle as well as the thickness of the rectus femoris tendon and Achilles tendon. It is expected to be used as basic data for vibrational exercises in the future studies and is expected to be used as an exercise to strengthen the leg muscles and tendons.

• 대한정형도수물리치료학회지
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• 제29권2호
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• pp.39-48
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• 2023

Background: The position of pitcher requires a lot of repetitive motion, and because of this, it is known that not only professional baseball players, but also middle and high school players are frequently exposed to injuries in baseball. The purpose of this study is to examine the differences in upper extremity muscle activity during repeated pitching and the activity of each muscle during repeated pitching by analyzing middle and high school pitchers, divided into groups by age. Methods: Twenty participants (10 middle school male students and 10 high school male students) were recruited for this research. The outcome measures included neuromuscular motor control, including the upper trapezius (UT), triceps brachii (TB), deltoid (DT), latissimus dorsi (LD), biceps brachii (BB), pectoralis major(PM), extensor carpi radialis(ER), and flexor carpi radialis (FR). Results: The two-way analysis of varaince (ANOVA) was used to compare the muscle activity variables between the middle school and high school students. The one-way ANOVA was used to compare the muscle activity variables within time differences each groups. Conclusion: Our results provided promising clinical evidence that guide for upper extremity muscles to increase pitching efficiency in middle and high school base ball players.

• International Journal of Advanced Culture Technology
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• 제10권4호
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• pp.286-293
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• 2022

In this study, we extracted sound waves that can improve psychological skills for volleyball players, investigated the changes that the application training of the extracted sound waves has on the brain waves of volleyball players, and the changes in brain waves are the psychological of volleyball players. The purpose of the research is to investigate the effect on technology. In order to achieve this purpose of the study, a total of 10 people from the experimental group and 10 from the control group were selected as the research subjects of university volleyball players with more than 5 years of volleyball experience. The experimental procedure was for the experimental group to listen to sound waves for more than 30 minutes at least 4 times a week for 12 weeks, and brain waves were measured 3 times before, during, and after. In addition, psychological skills were measured twice before and after. The measured data were subjected to t-test and two-way variance repeated measures analysis using SPSS 20.0. The results obtained through this process are as follows. First, as a result of analyzing the differences in psychological skills according to sound wave application training, there were statistically significant differences in goal setting and attention factors of the experimental group. Second, as a result of repeated measurement variance analysis at each time point according to the application of the sound wave application training program, it was found that alpha waves had a synergistic effect at the statistical significance level in the experimental group. Third, as a result of repeated measurement variance analysis at each time point according to the application of the sound wave application training program, it was found that the beta wave had a synergistic effect at the statistical significance level in the experimental group.

• 한국운동역학회지
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• 제27권2호
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• pp.149-155
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• 2017

Objective: The purpose of this study was to investigate the effects of three visual conditions (eyes opened, eyes closed, and wearing of a head mounted display [HMD]) on single-leg standing through kinematics and kinetic analysis. Method: Twelve college students (age: $24.5{\pm}2.6years$, height: $175.0{\pm}6.4cm$, weight: $69.2{\pm}5.1kg$) participated in this study. The study method adopted three-dimensional analysis with six cameras and ground reaction force measurement with one force plate. The analysis variables were coefficient of variation (CV) of the center of body mass, head movement, ground reaction force, and center of pressure, which were analyzed using one-way analysis of variance with repeated measures according to visual conditions. Results: In most cases, the results of this study showed that the CV was significantly higher in the order of HMD wearing, eyes closed, and eyes opened conditions. Conclusion: Our results indicated that body sway was the largest in the HMD wearing condition, and the risk of falling was high owing to the low stability.

• Communications for Statistical Applications and Methods
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• 제31권2호
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• pp.191-202
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• 2024

The goal of this paper is to show how multivariate regression analysis with high-dimensional responses is facilitated by the response dimension reduction. Multivariate regression, characterized by multi-dimensional response variables, is increasingly prevalent across diverse fields such as repeated measures, longitudinal studies, and functional data analysis. One of the key challenges in analyzing such data is managing the response dimensions, which can complicate the analysis due to an exponential increase in the number of parameters. Although response dimension reduction methods are developed, there is no practically useful illustration for various types of data such as so-called large p-small n data. This paper aims to fill this gap by showcasing how response dimension reduction can enhance the analysis of high-dimensional response data, thereby providing significant assistance to statistical practitioners and contributing to advancements in multiple scientific domains.

• 한국조사연구학회지:조사연구
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• 제9권2호
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• pp.1-27
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• 2008

사회조사 자료를 활용한 통계분석에 있어서 불완전 자료의 문제는 거의 모든 연구자들이 경험하는 하나의 보편적인 문제이다. 불완전 자료의 문제는 특히 패널조사와 같은 종단적 자료를 활용한 연구에 있어서 중요한 이슈가 된다. 본 연구의 목적은 최근까지 이루어진 불완전 자료에 대한 보정방범을 소개하는 것이다. 특히, 본 연구는 패널자괴에서 발생한 불완전 자료의 처리에 대한 관심이 부족한 점을 고려하여 최근까지 이루어진 보정방법들을 반복측정 패널자료 분석에 적용하는데 초점을 맞춘다. 첫째, 본 연구는 불완전 자료에 대한 적절하지 못한 사후처리는 분석결과에 있어서 유의미한 차이로 이어 수 있음을 시사한다. 특히, 분석결과는 반복측정 자료를 사용하는 연구의 경우 불완전 자료의 발생은 궤적의 초기값보다는 시간의 경과에 따른 궤적의 변화를 적절히 추정하는데 문제를 가질 수 있음을 시사하고 있다. 둘째, 분석결과는 완전제거법이나 평균대체법이 EM, FIML, MICE 방법들에 비해 불완전 자료의 처리효과가 상대적으로 떨어짐을 보여준다. 특히, 완전제거법이나 평균대체법과 같은 방법에 비해 최대우도법이나 다중대체법이 갖는 상대적 우위는 MCAR 가정에 비해 보다 현실적인 가정이라고 할 수 있는 MAR 조건하에서 크게 나타난다. 본 연구의 분석결과는 또한 비록 결측치의 발생기제가 MNAR 상황이라고 하더라도 연구자가 결측치의 발생과 관련된 변수들을 보정과정에서 적절하게 활용하면 편의의 상당부분을 감소시킬 수 있음을 시사한다.

• 한국운동역학회지
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• 제27권2호
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• pp.125-132
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• 2017

Objective: The aim of this study was to investigate the effect of targeted knee flexion angle on biomechanical factors of knee joint between upward and downward phases during the forward lunge. Method: Eight elderly subjects (age: $22.23{\pm}1.51years$, weight: $69{\pm}6.63kg$, height: $174.88{\pm}6.85cm$) participated in this study. All reflective marker data and ground reaction force during a forward lunge were collected. The knee joint movement and reaction force and joint moment at maximum knee flexion angle were compared by repeated measures one-way analysis of variance (ANOVA) (p<.05). The peak knee joint reaction force and joint moment between upward and downward phases were compared by repeated measures two-way ANOVA (p<.05). Results: The anterior and vertical knee joint movements, reaction force, and extensor moment of $80^{\circ}$ targeted knee flexion condition at maximum knee flexion angle was greater than both $90^{\circ}$ and $100^{\circ}$ conditions (p<.05). The $80^{\circ}$ knee flexed angle condition had greater peak joint reaction force and extensor moment compared with both $90^{\circ}$ and $100^{\circ}$ conditions between upward and downward phases during the forward lunge. Conclusion: As the targeted knee joint flexion angle increases, knee joint movement and kinetic variables become greater during the forward lunge exercise.

• 한국컴퓨터정보학회논문지
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• 제25권5호
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• pp.147-158
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• 2020

본 연구는 골감소증 노인 여성들을 대상으로 모던댄스 적용에 따른 골대사 지표 및 아디포사이토카인의 변화를 분석하여 골다공증 예방을 위한 효과적인 운동 방법을 제안하는데 있다. 연구의 대상자는 T-score -1.0 ~ -2.5사이 여성노인을 선정하였고, 모던댄스 그룹(n=10), 컨트롤 그룹(n=10)으로 무선 배정했다. 모던댄스는 주3회, 60분씩 12주간 실시하였고 자료 분석은 SPSS를 이용해 이원반복분산분석(two-way repeated measures ANOVA)으로 분석했다. 본 연구 결과 모던댄스 그룹에서 osteocalcin(p<.01), T-score(p<.05)가 유의하게 증가했다. Adiponectin(p<.05)은 모던댄스 그룹에서 유의하게 증가했고, TNF-α(p<.05), IL-6(p<.05)는 모두 모던댄스 그룹에서 유의하게 감소하였다. 이상의 결과를 종합해 보면 모던댄스는 골감소증 노인여성의 골다공증 예방을 위해 효과적인 전략이 될 것으로 사료되며 더불어 신진대사 및 기능 향상에도 긍정적인 영향을 미칠 것으로 생각된다.