• 운동영양학회지
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• 제25권1호
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• pp.7-15
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• 2021

[Purpose] Sodium bicarbonate shows ergogenic potential in physical exercise and sports activities, although there is no strong evidence which performance markers show the greatest benefit from this supplement. This study evaluated the effects of sodium bicarbonate supplementation on time trial performance and time to exhaustion in athletes and sports practitioners. [Methods] A systematic review was conducted using three databases, including 17 clinical trials. Among these clinical trials, 11 were considered eligible for the meta-analysis according to the criteria for the assessment of methodological quality using the PEDro Scale. Time to exhaustion was assessed in six studies, while time trial performance was evaluated in five studies. [Results] A significant beneficial effect of supplementation on time to exhaustion was found in a random effects model (1.48; 95% confidence interval [CI], 0.49 to 2.48). There was no significant effect of supplementation on time trial performance in a fixed effects model (slope = -0.75; 95% CI, -2.04 to 0.55) relative to a placebo group. [Conclusion] Sodium bicarbonate has the potential to improve sports performance in general, especially in terms of time to exhaustion.

• 대한물리의학회지
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• 제17권4호
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• pp.123-132
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• 2022

PURPOSE: The purpose of this study was to investigate the effects of cognitive orientation to daily occupational performance (CO-OP) interventions on the upper extremity function and occupational performance in subacute stroke patients. METHODS: A total of 30 eligible stroke patients were randomly distributed into the CO-OP experimental group (n = 15) and the traditional occupational therapy (OT) control group (n = 15). The CO-OP approach was applied for twelve 60-minute sessions. The Jebson Taylor Hand Function Test (JTHFT), the Korean version of the Modified Barthel Index (K-MBI), and the Performance Quality Rating Scale (PQRS) were used for outcome evaluations. RESULTS: There was a statistically significant difference in the paralytic upper extremity function before and after treatment (p < .01) between the group treated with the CO-OP approach and the group treated with traditional OT. The occupational performance of the CO-OP approach group showed a significant improvement (p < .01), and this group also showed a statistically significant improvement in quality of performance compared to the traditional OT group (p < .01). CONCLUSION: The CO-OP approach may be useful in clinical practice as a therapeutic intervention for improving the functional recovery and performance of subacute stroke patients. Future research should be carried out to investigate the persistence of this effect involving more participants and follow-up studies should also be undertaken.

• 전력전자학회:학술대회논문집
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• 전력전자학회 2004년도 전력전자학술대회 논문집(2)
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• pp.498-500
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• 2004

연료전지와 같은 분산전원은 전력계통과 연계 운전함으로 보다 안정된 전원을 얻을 수 있고 그 잉여 전력을 계통에 역송전함으로써 다양한 에너지원의 효율적인 활용도 가능케 하는 이점을 지닌다. 본 논문은 본소에서 개발한 PEMFC형 연료전지 시스템을 위한 1KW급 계통 연계형 인버터를 소개하고, 이의 구성 및 특성을 소개하고자 한다.

• 경영과학
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• 제26권2호
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• pp.37-59
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• 2009

Electronic brainstorming (EBS) to improve the process and outcomes of group decision making is an artifact of Information Systems legacy. Despite three decades of research with EBS in an effort to become a key resource of organizational performance, its performance when compared to that of nominal is inconclusive because of the recent debate over its usefulness in terms of productivity. Subsequent researchers have directed our attention to the re-examination of cognitive stimulation, which is considered the major benefit in computer-based idea generation, to explain the performance singularity in computer-based groups. While both cognitive and motivational factors that moderate and mediate the group-interaction process remain unexplored, individual differences that are tightly linked to creative behavior have been largely ignored to account for the discrepancy in performance. Since simulations have been widely used in situations where an outcome does not meet the assumptions, the notion of a group simulator and detailed simulation mechanisms are introduced to examine the potential effects of individual differences on the performance of computer-based idea generation groups. In addition, two prior studies that empirically explored cognitive mechanisms with the group simulator are showcased along with six propositions to initiate future research.

• 경영과학
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• 제32권2호
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• pp.51-68
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• 2015

The objective of this study is to empirically examine the relationship between creativity and performance in 10 government- funded research institutes of industrial science and technology. In order to analyze the relationship, the institutes are categorized into the high performance group and the low performance group based on research paper and patents The study uses discriminant analysis to identify the factors causing the difference between the two groups. The results show that there is no significant difference of individual creativity between the two groups whereas there is significant difference of group creativity and organization creativity. The study suggests that performance of government-funded research institutes depends on group and organizational creativity.

• Journal of Korean Biological Nursing Science
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• 제17권1호
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• pp.1-10
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• 2015

Purpose: This study is aimed at grasping the benefit/effect of program promoting intention to exercise performance based theory of planned behavior in the elderly who live in the rural areas with degenerative joint diseases (DJDs). Methods: There were 2 groups; 32 people in the experimental group and 24 in the control group, all above the age of 60. Program promoting intention to exercise performance was applied to the experimental group for 12 weeks. Results: Compared to the control group, the experimental group showed a significant the increase of attitude towards exercise, subjective norm, perceived behavior control, exercising intention, and exercise performance. Also, pain as a physical function, joint stiffness, ADLs, body flexibility, parallel, perceived health state as a psychological function, and life satisfaction were significantly improved. Conclusion: We expect that program promoting intention to exercise performance is used in nursing practice for the elderly with DJDs are needed to manage lifestyle.

• 여성건강간호학회지
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• 제8권2호
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• pp.268-277
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• 2002

A comparative study was conducted to identify the effects of prenatal education on primiparas' self-confidence, satisfaction in maternal role performance and perception of delivery experience. Data were collected from 91 primiparas from August 1 to 30, 2001 using structured questionnaires. The subjects were selected from 2 OB & GY hospitals which operate the same prenatal education programs in M city. One group of subjects was primiparas who did receive prenatal education (n= 44) and another group of subjects was primiparas who did not receive prenatal education (n= 47). This study hypothesized that primiparas in education group would have higher self- confidence, satisfaction in maternal role performance and perception of delivery experience than those of non-education group. Descriptive statistics, $x^2$-test, t-test, and correlation were used for data analyses. The results of this study were as follows: 1. Primiparas in prenatal education group would not have better perception of delivery experience than those of non-education group (t=1.405, p = 0.163). 2. Primiparas in prenatal education group would have higher self-confidence in maternal role performance than those of non-education group (t=7.669, p=0.000). 3. Primiparas in prenatal education group would have higher satisfaction in maternal role performance than those of non- education group (t=4.115, p = 0.000). 4. There was significant correlations between self-confidence and satisfaction (r=0.489, p=0.000). Moreover, there was significant correlation between self-confidence and perception of delivery experience (r = 0.284, p = 0.006). The results of this study indicated that prenatal education needs to be developed and applied to nursing practice to increase self-confidence and satisfaction in maternal role performance. Experimental studies are needed to identify the effect of prenatal education.

• The Journal of Korean Physical Therapy
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• 제28권4호
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• pp.254-258
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• 2016

Purpose: This study was conducted to identify the effects of dual task training on balance and functional performance in high school soccer players with functional ankle instability. Methods: Twenty high school soccer players with functional ankle instability were randomly assigned to a single task training group and a dual task training group. One participant who did not participate regularly in the training was excluded. The single task training group (n=9) received balance training on an unstable surface. The dual task training group (n=10) received balance training on an unstable surface and had to catch thrown balls during the balance training. Both groups were trained for 4 weeks, 3 days a week. The balance and functional performance of both groups was measured before and after training. Balance was measured using an anterior-posterior and medio-lateral balance. Functional performance was measured based on a figure-of-8 hop test, up-down hop test, and a single hop test. All data were analyzed by repeated two-way ANOVA tests. Results: A time by group interaction effect was not observed in the medio-lateral balance test, figure-of-8 hop test, or single hop test (p>0.05). A time by group interaction effect was observed in the anterior-posterior balance and up-down hop test (p<0.05). Conclusion: These results suggest that dual task training improved balance and functional performance better than single task training for some items.

• 임상간호연구
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• 제17권3호
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• pp.297-306
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• 2011

Purpose: This study was to identify the effects of a manual booklet as an aid to clinical performance in newly graduated nurses. Methods: The research design was a nonequivalent control group pretest-posttest design. The study was performed from June 14 to September 17, 2010 with an experimental group (n=23) and a control group (n=22) using a questionnaire with 45 new nurses who graduated from nursing colleges in 2010, and had less than 12 months work experience at a general hospital in B city. A pocketable nursing-work manual booklet was provided for the experimental group nurses so that they could use it as a reference in the work place. Results: Scores on performance of nursing work showed a significant difference between the experimental group and control group (t=-5.257, p=.001). Conclusion: Results of the present study indicate that a manual booklet of nursing work is very helpful in improving the clinical performance of new nurses. New nurses, who have some knowledge of nursing learned at school but have less clinical experience, can be helped effectively with a practical manual booklet for improving their work performance.

• Educational Technology International
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• 제19권1호
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• pp.123-151
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• 2018

This study aims to examine the effects of self-directed learning readiness (SDLR) on academic performance and the perceived usefulness for each elements of flipped learning. Based on their SDLR scores, 69 students were assigned to a high SDLR group and a low SDLR group. Academic performance was measured by the completion rate of a pre-class online learning and the final exam score, and perceived usefulness for each element of flipped learning was measured by a survey designed by the researcher. For academic performance, the high SDLR group showed a significantly higher completion rate than the low SDLR group, but no significant difference was observed in their final exam scores. Students in the high SDLR group perceived in-class student-centered activities as more useful than those in the low SDLR group. Additional qualitative analyses indicated that students needed more support from instructors and well-prepared peers. Finally, this study suggested that more examination on the various learning characteristics that may influence the effectiveness of flipped learning should be done.