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Artigo em Inglês | MEDLINE | ID: mdl-33799424


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. The parameters for health-related physical fitness measured muscle strength (handgrip strength), power (standing long jump), cardiorespiratory fitness (shuttle run test), flexibility (sit and reach), body mass index (BMI), and the total score. The results revealed a statistically significant improvement in muscle strength (p < 0.001), power (p < 0.001), cardiorespiratory fitness (p < 0.001), flexibility (p = 0.005), and the overall health-related physical fitness score (p = 0.001). However, students' BMI showed no significant difference before and after participation (p = 0.825). The results of this study indicated that school-based physical activity programs can have a positive effect on the health-related physical fitness of adolescents.

Força da Mão , Aptidão Física , Adolescente , Índice de Massa Corporal , Exercício Físico , Humanos , República da Coreia , Instituições Acadêmicas
Artigo em Inglês | MEDLINE | ID: mdl-32847040


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. The changes in students' fitness were analyzed, and the educational effects were examined via inductive analysis of the observation logs and group and in-depth interviews. The results demonstrated that, whereas the comparison group demonstrated no statistically significant changes in power, muscular strength and endurance, or cardiopulmonary endurance, the experimental group showed changes in all these variables, along with changes in flexibility. Further, the MB program had significant educational effects. First, students reported that musical cues enhanced their fitness motivation and sense of responsibility. Second, record-keeping and active participation contributed to self-led fitness management. Third, activity in a small space with few pieces of equipment led to the positive perception that the program was efficient and enabled regular exercise regardless of climate conditions.

Promoção da Saúde/métodos , Música , Educação Física e Treinamento/métodos , Aptidão Física , Adolescente , COVID-19 , Infecções por Coronavirus , Exercício Físico , Humanos , Pandemias , Pneumonia Viral , República da Coreia , Instituições Acadêmicas
J Interv Card Electrophysiol ; 55(2): 171-181, 2019 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-31102113


PURPOSE: The ablation index (AI) is a recently developed marker for ablation lesion quality that incorporates contact force (CF), time, and power in a weighted formula. There is a paucity of information on whether AI-guided pulmonary vein isolation (PVI) could improve the outcome in patients with atrial fibrillation (AF). We evaluated the optimal AI threshold for avoiding acute pulmonary vein reconnection (PVR), and to compare the efficacy of optimal AI-targeted PVI with that of conventional CF-guided PVI. METHODS: Seventy patients with AF (paroxysmal, 67%) were enrolled. In a phase 1 study, the patients underwent conventional CF-guided PVI (CON group), and the optimal AI threshold for avoiding acute PVR was identified. In phase 2, the patients underwent AI-guided PVI (OAI group). We compared the acute PVR rate between the CON group and the OAI group to demonstrate the efficacy of AI-guided PVI. RESULTS: In phase 1 (n = 38), acute PVR was observed in 57 of 532 (10.7%) segments. AI values of ≥ 450 at the anterior/roof segments and of ≥ 350 at the posterior/inferior/carina segments were identified as the optimal AI thresholds for avoiding acute PVR. In the phase 2 study targeting those AI values, the OAI group (n = 32) showed a significantly lower acute PVR rate than the CON group (4.2% vs. 10.7%, p < 0.001). The OAI group showed a higher minimum AI and smaller variations in AI values than the CON group. CONCLUSIONS: Optimal AI-targeted PVI is feasible and could improve the acute outcome in patients with AF. TRIAL REGISTRATION: URL: Unique identifier: NCT03389074.

Fibrilação Atrial/cirurgia , Veias Pulmonares/cirurgia , Ablação por Radiofrequência/métodos , Animais , Cães , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Estudos Prospectivos , Sistema de Registros
Diabetes Res Clin Pract ; 148: 14-22, 2019 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-30578822


AIMS: Metabolic syndrome (MetS) and chronic kidney disease (CKD) are significant risk factors for incident atrial fibrillation (AF). Few studies have reported the synergistic effect of MetS and CKD on development of AF. We investigated the individual and synergistic effects of MetS and CKD on the risk of incident AF. METHODS: We studied a retrospective cohort comprising 22,886,663 Koreans whose data was obtained from the national health claims database established by the Korean National Health Insurance Service between 2008 and 2013. Patients were classified into a MetS and a CKD group and followed-up until 2016 for new-onset AF. A Cox proportional hazards model assessed the independent and synergistic effect of MetS and CKD on the risk of incident AF. RESULTS: The prevalence of MetS and CKD in these patients was 27.4% and 5.4%, respectively. During a mean follow-up of 5.4 years, AF developed in 225,529 patients (1% of the total cohort). The adjusted hazard ratio (HR) for incident AF was 1.38 (95% confidence interval [CI] 1.36-1.39) for MetS, and 1.35 (95% CI 1.34-1.37) for CKD. Patients with MetS and CKD showed a higher risk of AF (HR 1.75, 95% CI 1.73-1.78) than that observed in those without MetS and CKD. CONCLUSIONS: The combination of MetS and CKD showed a high risk of development of AF in a large-scale nationwide cohort. Further studies are warranted to determine whether pharmacological and/or lifestyle interventions can control/manage these modifiable risk factors to reduce the risk of development of AF.

Fibrilação Atrial/epidemiologia , Síndrome Metabólica/epidemiologia , Insuficiência Renal Crônica/epidemiologia , Adulto , Idoso , Fibrilação Atrial/complicações , Estudos de Coortes , Bases de Dados Factuais , Feminino , Humanos , Masculino , Síndrome Metabólica/complicações , Pessoa de Meia-Idade , Prevalência , Insuficiência Renal Crônica/complicações , República da Coreia/epidemiologia , Estudos Retrospectivos , Fatores de Risco
Acta Crystallogr E Crystallogr Commun ; 71(Pt 11): o813, 2015 Nov 01.
Artigo em Inglês | MEDLINE | ID: mdl-26594540


In the title compound, C6H4BrN3O4, the dihedral angles between the nitro groups and the aniline ring are 2.04 (3) and 1.18 (4)°, respectively. In the crystal, N-H⋯O and C-H⋯O hydrogen bonds and weak side-on C-Br⋯π inter-actions [3.5024 (12) Å] link adjacent mol-ecules, forming a three-dimensional network. A close O⋯Br contact [3.259 (2) Å] may also add additional stability.