Wellness Perception of South Korean Elementary School Students during the COVID-19 Endemic.

Unlabelled: This study aimed to analyze health management awareness among South Korean elementary school students in COVID-19 endemic areas.

Methods: Using convenience sampling, 675 South Korean elementary school students (age 11-12 years old) were selected as participants in July 2023. Data for the study were collected via online and offline surveys between July and August 2023.

Differences in Effort, Reward, Grit, Burnout, and Continuous Exercise Intention: Assessing the Effort-Reward Imbalance among Korean Athletes.

Although studies have shown that an imbalance between effort and reward in the workplace negatively affects an individual's physiological and mental health, few have looked at how this imbalance may affect the mental state of athletes. Therefore, this study aimed to evaluate the importance of the effort-reward imbalance (ERI) in athletes by examining whether psychological variables would differ depending on the ERI. To accomplish this, 795 registered collegiate athletes were recruited.

Iridium Acylnitrenoid-Initiated Biomimetic Cascade Cyclizations: Stereodefined Access to Polycyclic δ-Lactams.

Ring-fused azacyclic compounds are important building units in the synthesis of biorelevant natural products, pharmaceutical agents, and molecular materials. Herein, we present a new approach to these condensed azacycles by a biomimetic cascade cyclization of arylalkenyl dioxazolones. This cascade reaction was found to proceed with excellent stereoselectivity and a high functional group tolerance.

Long-term outcomes of abandoned leads of cardiac implantable electronic devices.

Background: Evidence of the long-term outcomes of abandoned leads (ALs) in patients with cardiac implantable electronic devices (CIEDs) is scarce.

Objective: This study aimed to investigate the long-term outcomes of ALs.

Methods: This retrospective cohort study reviewed a single-center CIED registry of 2962 procedures performed from 1984-2018 and identified 130 patients with AL (AL group).

Mediating Effect of Sports Safety Awareness between Sports Activity Habits and the Intention to Complete Safety Education among Korean Adolescents.

Background: As the importance of safety during sports activities continues to gain emphasis socially, the interest in creating a culture of safety and safety education to support this is also increasing. However, no study has examined the willingness of adolescents to complete safety education voluntarily. To identify methods of building a culture of sports safety among adolescents, this study investigated the structural relationship among three related variables: sports activity habits, intention to complete safety education, and sports safety awareness of Korean adolescents.

The higher recurrence rate after catheter ablation in younger patients with atrial fibrillation suggesting different pathophysiology.

Background: Young atrial fibrillation (AF) patients have been underrepresented in studies of radiofrequency catheter ablation (RFCA) and the outcome of RFCA has not been widely addressed. We investigated age-related differences in clinical features, the recurrence of atrial tachyarrhythmia, and its predictors of patients who underwent RFCA for AF.

Methods: This is a multicenter prospective study of 2799 patients who underwent RFCA for AF in 2017-2020.

An Analysis of Health Perceptions and Performance in Elementary Students in Korea during the ongoing COVID-19 Pandemic.

During the coronavirus disease 2019 (COVID-19) pandemic, social distancing guidelines changed lifestyles, including increased sedentary time, physical inactivity, and disrupted sleep patterns among children. The purpose of the present study is to analyze the health awareness (mental health, disease, physical activity, sleep, eating habit, and hygiene health management) of elementary school students during the COVID-19 pandemic, and use the importance-performance analysis (IPA) technique to identify gender differences in health perceptions. We collected data on 1006 students, which was analyzed using frequency analysis, reliability testing, independent sample t-tests, and importance-performance analysis (IPA).

Changes in Physical Fitness among Elementary and Middle School Students in Korea before and after COVID-19.

The present study aimed to analyze changes in health-related physical fitness among Korean elementary and middle school students before (2019) and after (2021) the COVID-19 pandemic. Data collection was completed by requesting the physical activity promotion system (PAPS) data from elementary and middle school students. This information is obtained annually by the Goyang Office of Education in Gyeonggi-do, Korea.

Factor Structure of the Korean Version of the Occupational Socialization of Beginning Physical Education Teachers Scale in the Context of the COVID-19 Pandemic and Its Relationship with Health Perception Education.

This study aimed to explore the factor structure of the Korean version of the occupational socialization of beginning physical education teachers scale, in the context of the COVID-19 pandemic, and to verify its relationship with health perception education. In October 2021, 257 Korean beginning physical education teachers were enrolled in this study. Data were analyzed using frequency analysis, exploratory factor analysis, confirmatory factor analysis, descriptive statistics, reliability analysis, and multiple regression analysis.

Acute and long-term efficacy of ablation index-guided higher power shorter duration ablation in patients with atrial fibrillation: A prospective registry.

Background: Theoretically, targeting the same ablation index (AI) using higher power may achieve the same lesion size with a shorter ablation time. We evaluated the acute and long-term efficacy of higher-powered ablation guided by ablation index (HPAI) compared with conventional-powered ablation guided by AI (CPAI) for pulmonary vein isolation (PVI) in patients with atrial fibrillation (AF).

Methods: Drug refractory symptomatic AF patients who had been ablated with 40 W on the anterior/roof segments and 30 W on the posterior/inferior/carina segments were enrolled (HPAI group).

Association Between Change in Metabolic Syndrome Status and Risk of Incident Atrial Fibrillation: A Nationwide Population-Based Study.

Backgroud There is a paucity of information on whether changes in metabolic syndrome (MetS) status affect the risk of new-onset atrial fibrillation (AF). We aimed to evaluate whether changes in MetS status and components of MetS affect AF risk using data from a nationwide observational cohort. Methods and Results A total of 7 565 531 adults without prevalent AF (mean age, 47±14 years) who underwent 2 serial health examinations by the Korean National Health Insurance Cooperation were identified.

Feasibility study on stereotactic radiotherapy for total pulmonary vein isolation in a canine model.

We tested the feasibility of pulmonary vein (PV) and left atrial (LA) posterior wall isolation using non-invasive stereotactic ablative body radiotherapy (SABR) and investigated pathological changes in irradiated lesions in a canine model. Seven male Mongrel dogs received single-fraction 33 Gy SABR. We designed the en-bloc circular target of total PVs and LA posterior wall to avoid the esophagus.

Increased Risk of Atrial Fibrillation in Patients with Atopic Triad: A Nationwide Population-Based Study.

Background: Despite a sharp increase in the global prevalence of allergy over the past decade, the relation between multiple atopic conditions and atrial fibrillation (AF) has not been fully elucidated.

Objective: To determine whether there is an association between atopic diseases and AF and to examine the effect of multiple atopic diseases on the incidence of AF.

Methods: This retrospective population-based study used the database from the 2009 National Health Insurance Services-Health Screening Cohort in Korea.

Enantioselective Access to Spirolactams via Nitrenoid Transfer Enabled by Enhanced Noncovalent Interactions.

Described herein is the Ir-catalyzed enantioselective access to chiral spirolactam products via the nitrenoid transfer to aromatic -carbons. The key strategy for precise stereocontrol is to enhance the secondary attractive and repulsive interactions between the chiral catalyst and substrates by the introduction of a traceless -silyl achiral auxiliary, thus effectively differentiating two prochiral faces of arenol-derived 1,4,2-dioxazol-5-one substrates.

Effects of School-Based Physical Activity Programs on Health-Related Physical Fitness of Korean Adolescents: A Preliminary Study.

As adolescents spend the majority of their time focused on exams and assignments, they do not have sufficient time to engage in physical activity; this lack of physical activity is an important public health concern. This study aimed to investigate how school-based physical activity programs affect the health-related physical fitness of adolescents in the Republic of Korea. For this study, a total of 120 high school students participated in a school-based physical activity program that included badminton and table tennis for 15 weeks each (35 min/day, three times a week), with a total of 30 weeks for one academic year.

Predictors of ischemic stroke for low-risk patients with atrial fibrillation: A matched case-control study.

Background: The predictors of ischemic stroke in "low-risk" patients with atrial fibrillation (AF) (CHADS-VASc score 0 in men or 1 in women) are debated.

Objective: This study aimed to investigate the factors associated with ischemic stroke in low-risk patients with AF. Imaging characteristics of their ischemic strokes were also evaluated.

Non-Vitamin K Antagonist Oral Anticoagulants in Patients With Atrial Fibrillation and Prior Gastrointestinal Bleeding.

Background And Purpose: Limited data support the benefits of non-vitamin K oral anticoagulants (NOACs) among atrial fibrillation patients with prior gastrointestinal bleeding (GIB). We aimed to evaluate the effectiveness and safety of NOACs compared with those of warfarin among atrial fibrillation patients with prior GIB.

Methods: Oral anticoagulant-naive individuals with atrial fibrillation and prior GIB between January 2010 and April 2018 were identified from the Korean claims database.

Increased atrial fibrillation risk in Parkinson's disease: A nationwide population-based study.

Objective: Parkinson's disease (PD) is the second most common neurodegenerative disorder associated with various morbidities. Although the relationship between cardiovascular disease and PD has been studied, a paucity of information on PD and atrial fibrillation (AF) association exists. Thus, we aimed to investigate whether patients with PD have an increased risk of AF.

Zero-fluoroscopy catheter ablation for atrial fibrillation: a transitional period experience.

Background: Radiofrequency catheter ablation for atrial fibrillation (AF) without using fluoroscopy has been getting popular. In this study, we reported the transition period experience of the zero-fluoroscopy procedure by an experienced operator and shared our zero-fluoroscopy protocol.

Method: A total of consecutive 30 AF ablation cases attempted to be treated without fluoroscopy were investigated.

Chromosomal abnormalities and atrial fibrillation and ischemic stroke incidence: a nationwide population-based study.

There is a paucity of information as to whether chromosomal abnormalities, including Down Syndrome, Turner Syndrome, and Klinefelter Syndrome, have an association with atrial fibrillation (AF) and ischemic stroke development. Data from 3660 patients with Down Syndrome, 2408 with Turner Syndrome, and 851 with Klinefelter Syndrome without a history of AF and ischemic stroke were collected from the Korean National Health Insurance Service (2007-2014). These patients were followed-up for new-onset AF and ischemic stroke.

Non-vitamin K antagonist oral anticoagulants in very elderly east Asians with atrial fibrillation: A nationwide population-based study.

Background: The evidence of effectiveness and safety of the non-vitamin K antagonist oral anticoagulants (NOACs) among elderly East Asians is limited.

Objectives: We aimed to describe the effectiveness and safety outcomes associated with NOACs and warfarin among elderly Koreans aged ≥80 years.

Methods: Using the Korean Health Insurance Review and Assessment service database, patients with atrial fibrillation (AF) who were naïve to index oral anticoagulant between 2015 and 2017 were included in this study (20,573 for NOACs and 4086 for warfarin).

Temporal trends of catheter ablation for patients with atrial fibrillation: A Korean nationwide population-based study.

Introduction: Catheter ablation (CA) for atrial fibrillation (AF) is used as a treatment to restore and maintain sinus rhythm in patients with AF. However, limited data exist regarding the temporal trends of AF ablation in Asia. This study aimed to describe the temporal trends of CA for AF in Korean over 11 years.

Development and Implementation of a "Music Beeps" Program to Promote Physical Fitness in Adolescents.

This study aimed to develop a physical education fitness program for adolescents to counteract the declining physical activity levels caused by the COVID-19 pandemic, as well as to investigate the program's effect. This mixed-methods study developed and implemented a five-component "Music Beeps" (MB) program to promote adolescents' physical fitness. A total of 240 students from two high schools in South Korea-divided into experimental and control groups-participated in 32 sessions over 16 weeks.