• 대한간호학회지
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• 제52권2호
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• pp.121-133
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• 2022

Purpose: This study examined the impact of a virtual reality intervention program based on psychological needs on behavioral and psychological symptoms, apathy, and quality of life (QOL) in patients with dementia or mild cognitive impairment living in nursing facilities. Methods: This study is nonequivalent control group pretest-posttest design of quasi-experimental study. The study collected data from November 18, 2020 to July 24, 2021 from patients with dementia or mild cognitive impairment (30 in the experimental group and 30 in the control group) at three nursing facilities in G city using self-reporting and caregiver-informant reporting methods. The analysis employed the chi-square test, Fisher's exact test, paired t-test, independent t-test, Wilcoxon signed rank test, Mann-Whitney U, repeated measures ANOVA, GEE, using SPSS/WIN 27.0. Results: The severity of behavioral and psychological symptoms (Wald 𝛘² = 2.68, p = .102) and the care burden of caregivers (Wald 𝛘² = 1.72, p = .190) were not significant and was no significant time and group interaction effect (Wald 𝛘² = 0.63, p = .426, Wald 𝛘² = 0.52, p =. 471). The difference in apathy and QOL score were statistically significant for the group-time interaction (F = 43.65, p < .001; F = 4.35, p = .041). Conclusion: The virtual reality intervention program of this study shows a positive effect on the apathy reduction and QOL of patients with dementia or mild cognitive impairment residing in nursing facilities.

• 대한간호학회지
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• 제53권2호
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• pp.260-273
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• 2023

Purpose: This study aimed to explore the weight loss experience of highly obese young people who underwent bariatric surgery. Methods: Data were collected, from October 2021 to April 2022, through individual in-depth interviews with eight highly obese young adults who underwent bariatric surgery and analyzed using Colaizzi's phenomenological method. Results: The following four theme clusters were extracted. First, 'The unbearable sorrow of obese people' explains the process of choosing bariatric surgery after fluctuations and frustration despite countless repeated weight loss attempts. Second, 'The impact aftermath of bariatric surgery' revealed participants struggling in the face of unexpected changes due to bariatric surgery. Third, 'Efforts to rebuild a healthy myself' demonstrated the struggle to regain health by using the surrounding support system to overcome the difficulties of this surgical procedure. Lastly, 'Facing life by getting rid of the yoke of obesity' displayed the experiences of the participants who felt ambivalent about their changed appearance, but coping positively with the new life. Conclusion: This study provides an in-depth understanding of the weight loss experiences of highly obese adolescents who underwent bariatric surgery and presents a new perspective on clinical practice. The results of this study are expected to be useful in developing and applying systematic and customized nursing interventions before and after bariatric surgery.

• 한국전문물리치료학회지
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• 제30권1호
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• pp.23-31
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• 2023

Background: Several factors contribute to shoulder pain, including abnormal neck posture, repeated use of the upper limbs, work involving raising the upper limbs above the head, and the effects of vibration. However, previous study has reported that constant vibration exposure could impact improvement of the stability on joints related with muscle recruitment and activation. For this difference reason, we need to verify for the complex study of relationship with repetitive upper limb movements, poor head posture, and constant vibration exposure. Objects: Our study was made to investigate the influence of vibration exposure on the shoulder muscle activity during forward-head and over-head tasks with isometric shoulder flexion. Methods: In a total of 22 healthy subjects, surface electromyography (EMG) data were collected from shoulder muscles (upper/lower trapezius, serratus anterior, and lumbar erector spinae) on tasks (neutral-head task [NHT], forward-head task [FHT], and over-head task [OHT]) with and without vibration exposure. Results: In all tasks, the EMG data of the upper trapezius and serratus anterior significantly increased with vibration exposure (p < 0.05). Furthermore, the EMG data of the lumbar erector spinae significantly increased with vibration exposure in the NHT and FHT (p < 0.05). Conclusion: We suggest that continuous vibration exposure during the use of hand-held tools in the tasks could be associated with harmful effects in the workplace. Lastly, we clinically need to examine the guidelines regarding the optimal posture and vibration exposure.

• 대한통합의학회지
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• 제11권4호
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• pp.61-71
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• 2023

Purpose : Energy bars are increasingly popular among active individuals, yet their timing and nutrient combinations' impact on exercise adaptation remains unclear. This study aims to address this knowledge gap by investigating whether the combination of pre- and post-workout supplementation can synergistically enhance fitness and alleviate fatigue in trained CrossFit participants. Investigate if combining pre- and post-workout supplements can enhance fitness and blood lactate management in trained CrossFit participants, potentially improving exercise performance for this group. Methods : In a randomized crossover study, 20 trained CrossFit individuals (11 males, 9 females) completed thrice-weekly 60-minute CrossFit sessions for 3 weeks, with a one-week washout period. Participants were randomly assigned to either a chocolate bar group (CH, 45 g, 225 kcal) or an energy bar group (ES, 48 g, 238 kcal, with protein, caffeine, taurine, and BCAAs). For one week, participants consumed two bars of their assigned supplement five minutes before and after workouts. After a washout period, they switched supplements. Blood lactate levels and a visual analog scale (VAS) were assessed before, immediately after, and 30 minutes post-workout. Fitness tests (hand grip, broad jump, sit-ups) were conducted at baseline and 30 minutes post-final workout. Data were analyzed using two-way repeated measures ANOVA (p<.05), 95 % confidence intervals, and magnitude inferences. Results : Hand grip strength (t=-5.60, p=.000), broad jump (t=-3.43, p=.003) and sit up (t=-3.94, p=.001) were significantly increased in the ES group. Compared to CH group, there was a significant time and group interactions for blood lactate level (F=5.51, p=.008) and VAS(F=31.67, p=.000) in the ES group. Conclusion : Pre- and post-workout energy bar supplementation may have a beneficial effect on blood lactate clearance and fitness in trained CrossFit individual. The combination of proprietary supplements taken may provide benefits for removing the blood lactate during high-intensity functional exercise.

• 한국방사선학회논문지
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• 제17권5호
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• pp.775-782
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• 2023

본 연구는 대학에서 고가의 장비로 MRI 기계를 설치, 관리 및 운영에 현실적인 한계를 극복하고자 가상현실(VR)을 자기공명영상장치에 접목하여 콘텐츠를 개발 및 활용하여 가상현실(VR) 체험 교육을 실시하고 향후 의료기관에서도 실제 검사와 유사한 실습을 제공하는 임상 기반 교육용 체험 시스템 개발을 진행하였다. 가상현실 기반 교육용 시스템을 체험한 학생을 대상으로 설문을 진행하여 체험 중 발생할 수 있는 부작용을 파악한 후 교육을 전혀 경험하지 못한 학생들을 대상으로 자기주도학습 능력 및 학업적 자기효능감 조사를 실시하여 가상현실 기반 실습이 학습에 미치는 영향을 분석하였다. 자기주도학습 능력 조사에 대한 분석에서는 교육을 경험한 학생 집단과 경험하지 않은 학생 집단 간의 평균에 차이가 없었으나, 학업적 자기효능감을 분석한 결과에서는 집단별 평균에 유의한 차이가 있었으며, 가상현실 교육 시스템 체험 후 자기평가에서 자기공명영상 학습에 대한 자신감이 향상되었다. 가상현실 기반의 실습 교육을 진행할 경우 새로운 학습방법 제공 및 시간과 공간에 구애받지 않고 언제 어디서나 반복될 수 있는 교육의 기회도 제공할 수 있어 효율적인 실습 시스템을 제공할 수 있을 것으로 사료된다.

• Restorative Dentistry and Endodontics
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• 제48권3호
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• pp.26.1-26.12
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• 2023

Objective: This in vitro study aimed to evaluate the effects of different whitening toothpastes on a composite resin during at-home bleaching with 10% carbamide peroxide. Materials and Methods: Sixty samples (7 mm × 2 mm) were used for color and roughness analyses, while another 60 samples (3 mm × 2 mm) were utilized to assess microhardness. The factors analyzed included toothpaste, for which 5 options with varying active agents were tested (distilled water; conventional toothpaste; whitening toothpaste with abrasive agents; whitening toothpaste with abrasive and chemical agents; and whitening toothpaste with abrasive, chemical, and bleaching agents). Brushing and application of whitening gel were performed for 14 days. Surface microhardness (SMH), surface roughness (Ra), and color (ΔL^*, Δa^*, Δb, ΔE^*_ab, and ΔE₀₀) were analyzed. The Ra and SMH data were analyzed using mixed generalized linear models for repeated measures, while the color results were assessed using the Kruskal-Wallis and Dunn tests. Results: Between the initial and final time points, all groups demonstrated significant increases in Ra and reductions in SMH. No significant differences were found between groups for SMH at the final time point, at which all groups differed from the distilled water group. Conventional toothpaste exhibited the lowest Ra, while whitening toothpaste with abrasive agent had the highest value. No significant differences were observed in ΔL^*, Δa^*, and Δb. Conclusions: While toothpaste composition did not affect the color stability and microhardness of resin composite, combining toothbrushing with whitening toothpaste and at-home bleaching enhanced the change in Ra.

• 대한간호학회지
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• 제54권1호
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• pp.32-43
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• 2024

Purpose: This study aimed to determine the impact of an intervention using voice recording of family members on pain, anxiety, and agitation in patients undergoing weaning from mechanical ventilation. Methods: A randomized control pre-post experimental design was implemented to 53 participants, with 27 and 26 participants in the experimental and control groups, respectively. A 70-second voice recording of a family member, repeated three times at 10-minute intervals was used as an intervention for the experimental group. Meanwhile, participants in the control group used headset for 30 minutes. Structured instruments were utilized to measure pain, anxiety, agitation, and the weaning process. Wilcoxon Signed Ranks test and the Mann-Whitney U test, or χ² test, were used for data analysis. Results: The experimental group exhibited significant decrease in pain (Z = - 3.53, p < .001), anxiety (t = 5.45, p < .001), and agitation (Z = - 2.99, p = .003) scores compared with those of the control group. However, there was no significant difference between groups in the weaning process' simplification (χ² = 0.63, p = .727). Conclusion: Intervention using family members' voice recording effectively reduces pain, anxiety, and agitation in patients undergoing weaning from mechanical ventilation. This can be actively utilized to provide a more comfortable process for patients.

• Earthquakes and Structures
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• 제26권1호
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• pp.77-86
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• 2024

To investigate the seismic performance of steel pipe-aeolian sand recycled concrete columns, this study designed and produced five specimens. Low-cycle repeated load tests were conducted while maintaining a constant axial compression ratio. The experiment aimed to examine the impact of different aeolian sand replacement rates on the seismic performance of these columns. The test results revealed that the mechanical failure modes of the steel pipe-recycled concrete column and the steel pipe-aeolian sand recycled concrete column were similar. Plastic hinges formed and developed at the column foot, and severe local buckling occurred at the bottom of the steel pipe. Interestingly, the bulging height of the damaged steel pipe was reduced for the specimen mixed with an appropriate amount of wind-deposited sand under the same lateral displacement. The hysteresis curves of all five specimens tested were relatively full, with no significant pinching phenomenon observed. Moreover, compared to steel tube-recycled concrete columns, the steel tube-aeolian sand recycled concrete columns exhibited improved seismic energy dissipation capacity and ductility. However, it was noted that as the aeolian sand replacement rate increased, the bearing capacity of the specimen increased first and then decreased. The seismic performance of the specimen was relatively optimal when the aeolian sand replacement rate was 30%. Upon analysis and comparison, the damage analysis model based on stiffness and energy consumption showed good agreement with the test results and proved suitable for evaluating the damage degree of steel pipe-wind-sand recycled concrete structures.

• 산업융합연구
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• 제22권5호
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• pp.137-153
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• 2024

본 연구는 신생아 스크리닝(newborn bloodspot screening, NBS) 과정이 부모에게 미치는 사회심리적 영향과 관련 요인을 파악하기 위한 연구이다. Arksey와 O'Malley (2005)가 제시한 방법론을 사용한 주제범위 문헌고찰을 시행하였다. 검색에 사용된 데이터베이스는 PubMed, CINAHL, RISS, KISS, DBpia였으며, 2000년부터 2023년까지 출판된 논문을 포함하였다. 총 749편이 검색되었으며, 32편이 최종분석에 포함되었다. 대부분의 연구는 설문지나 면담을 통한 서술적 조사연구였고, 부정적인 사회심리적 영향을 감소시키기 위한 중재연구는 거의 없었다. 연구결과 부모들은 특히 NBS 양성 결과 통보시 의사소통 방법 및 시기적절하고 신뢰할 만한 정보을 얻기 어려운 것과 관련하여 부정적인 사회심리적 영향을 받았다. NBS에 대한 지식, 교육 및 의사소통의 질과 만족도, 정보의 근원 및 정보제공자의 역량이 NBS로 인한 부모의 사회심리적 영향의 관련 요인이었다. 산전 및 산후의 반복적 교육, 시기적절하고 신뢰할만한 정보제공 및 건강관리제공자와 부모와의 효과적인 의사소통이 NBS 과정의 부정적인 사회심리적 영향을 감소시키는데 중요하다. 간호사는 NBS의 질 향상을 위해 중요한 역할을 할 수 있다.

• Restorative Dentistry and Endodontics
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• 제49권1호
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• pp.7.1-7.11
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• 2024

Objectives: This study aimed to evaluate the impact of substrate color and interface distance on the color adjustment of 2 single-shade composites, Vittra APS Unique and Charisma Diamond One. Materials and Methods: Dual disc-shaped specimens were created using Vittra APS Unique or Charisma Diamond One as the center composite, surrounded by shaded composites (A1 or A3). Color measurements were taken with a spectrophotometer against a gray background, recording the color coordinates in the CIELAB color space. Illumination with a light-correcting device and image acquisition using a polarizing filter-equipped cell phone were performed on specimens over the same background. Image processing software was used to measure the color coordinates in the center and periphery of the inner composite and in the outer composite. The color data were then converted to CIELAB coordinates and adjusted using data from the spectrophotometer. Color differences (ΔE₀₀) between the center/periphery of single-shade and outer composites were calculated, along with color changes in single-shade composites caused by different outer composites. Color differences for the inner composites surrounded by A1 and A3 were also calculated. Data were analyzed using repeated-measures analysis of variance (α = 0.05). Results: The results showed that color discrepancies were lowest near the interface and when the outer composite was whiter (A1). Additionally, Charisma Diamond One exhibited better color adjustment ability than Vittra APS Unique. Conclusions: Color discrepancies between the investigated single-shade composites diminished towards the interface with the surrounding composite, particularly when the latter exhibited a lighter shade.