Publications by authors named "Jiin Ryu"

: This study examined differences in physical activity (PA) and sedentary behavior among Korean cancer survivors compared to cancer-free individuals from 2017 to 2021 and identified differences based on their cancer treatment status. : We used data for 28,528 adults (1585 cancer survivors and 26,943 cancer-free individuals) from the 2017-2021 Korea National Health and Nutrition Examination Survey. PA and sedentary behavior were assessed using the Korean version of the Global Physical Activity Questionnaire.

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Calisthenics is a form of bodyweight exercise that involves dynamic and rhythmic exercises. The physiological responses during and after calisthenics remain unclear. This study examined whether a bout of full-body calisthenics, a form of circuit resistance exercise that involves bodyweight movements, yields greater excess post-exercise oxygen consumption (EPOC) than steady-state exercise (SSE) at matched oxygen consumption.

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Importance: Recovery of shoulder function following breast cancer surgery is crucial for physical functioning and quality of life. While early implementation of shoulder rehabilitation exercises may enhance recovery, the optimal timing and exercise program remain unclear.

Objective: To investigate whether an early exercise intervention, initiated 1 day postsurgery and continued for 1 month through subsequent visits, could improve shoulder range of motion (ROM) and strength in patients with breast cancer.

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Article Synopsis
  • A study in Korea examined how physical activity (PA) levels affect healthcare usage, specifically emergency department visits and hospitalizations, among patients with chronic obstructive pulmonary disease (COPD).
  • The research involved a large cohort of 3308 COPD patients and 293,358 non-COPD individuals, analyzing data from 2009 to 2017.
  • Findings revealed that COPD patients had significantly higher risks of healthcare visits across all PA levels, especially in those who were sedentary, and increasing PA by just 500 MET-min/week could lower these risks.
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Silent information regulator 2 (Sir2) is a conserved NAD-dependent histone deacetylase crucial for regulating cellular stress response and the aging process in . In this study, we investigated the molecular mechanism underlying how the absence of Sir2 can lead to altered stress susceptibilities in under different environmental and physiological conditions. In a glucose-complex medium, the Δ strain showed increased sensitivity to HO compared to the wild-type strain during the post-diauxic phase.

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Purpose: This study aimed to investigate associations of socioeconomic status (SES) with asthma exacerbation and asthma-related hospital utilization factors among children with asthma in the Republic of Korea.

Methods: This study retrospectively analyzed population-level data from the Korean National Health Insurance Service, collected from 2013 through 2019. SES was classified into five categories according to the national health insurance premiums quantiles (0 [lowest] to 4 [highest]).

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Background: Breast cancer surgery is associated with upper-body morbidities that may last several years postsurgery. Research has not determined if the type of surgery leads to differential effects on shoulder function, activity levels, and QoL during the early rehabilitation period. The main objective of this study is to examine changes in shoulder function, health, and fitness outcomes from the day before to surgery to 6 months postsurgery.

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Background: Patients with breast cancer undergo various treatments according to their tumor subtype and cancer stages within 1 year after being diagnosed. Each treatment may cause treatment-related symptoms that have negative impacts on patients' health and quality of life (QoL) The symptoms can be mitigated when exercise interventions are appropriately applied to patients' physical and mental conditions. Although many exercise programs were developed and implemented during this period, the effects of tailored exercise programs according to symptoms and cancer trajectories on patients' long-term health outcomes have not yet been fully elucidated.

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Background: Gastroesophageal reflux disease (GERD) is a common comorbidity of nontuberculous mycobacteria (NTM) pulmonary disease (PD). Although GERD is associated with more symptoms and severe disease in patients with NTM PD, whether GERD is associated with an increased risk of NTM PD developing is unknown.

Research Question: Does GERD influence the development of NTM PD? Are there any factors associated with an increased risk of NTM PD among patients with GERD? What is the impact of NTM PD on the health-care use of patients with GERD?

Study Design And Methods: Data from the Korean National Health Insurance Service National Sample Cohort between 2002 and 2015 were used.

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Asthmatic patients are generally considered to have an increased risk of mortality compared with subjects without asthma. However, this issue has been less evaluated using nationally representative data. Moreover, it is unclear whether respiratory comorbidities other than chronic obstructive pulmonary disease (COPD) are associated with increased mortality in asthmatic patients compared with subjects without.

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Gastroesophageal reflux disease (GERD) is a common non-respiratory comorbidity in patients with non-tuberculous mycobacterial pulmonary disease (NTM-PD). However, little is known about the association between GERD and healthcare utilization and medical costs of NTM-PD. Thus, we evaluated this association using the Health Insurance Review and Assessment Service National Patient Sample.

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Background: This study aimed to investigate the associations of domain-specific physical activity (PA) with the prevalence of depressive symptoms.

Methods: We analyzed data from 11,679 (5,056 men and 6,623 women) participants aged ³19 years in the Korea National Health and Nutrition Examination Survey (2016 and 2018 waves). Depressive symptoms were measured using the Korean version of the Patient Health Questionnaire-9 (PHQ-9), with a cut-off score for depression of 11.

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Objective: Patients who experience vertebral compression fractures are vulnerable to subsequent vertebral compression fractures (SVCFs). The purpose of this nationwide population-based study was to determine the age-specific cumulative incidence and factors associated with SVCFs in South Korea.

Methods: Diagnostic codes, medical costs, and comorbid diseases in patients who had a vertebral compression fracture in 2011 and 2012 were collected from the National Health Insurance Service database of South Korea from 2007 to 2018.

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Article Synopsis
  • GORD (Gastro-oesophageal reflux disease) is common in patients with bronchiectasis, particularly in those aged 50 and older, and is linked to increased healthcare usage and costs.* -
  • A study of over 44,000 bronchiectasis patients in Korea revealed that those with GORD had significantly more outpatient and emergency visits, as well as higher total medical costs compared to those without GORD.* -
  • Specifically, patients with GORD had 1.44 times more overall ER visits and 1.26 times more respiratory-related hospitalizations than those without GORD, highlighting the increased burden of illness and healthcare spending associated with the condition.*
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This study aimed to evaluate the bone regeneration capacity of a customized alloplastic material and xenograft with recombinant human bone morphogenetic protein-2 (rhBMP-2). We prepared hydroxyapatite (HA)/tricalcium phosphate (TCP) pure ceramic bone blocks made using a 3D printing system and added rhBMP-2 to both materials. In eight beagle dogs, a total of 32 defects were created on the lower jaws.

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Short-acting β-agonist (SABA) use is known to be lower in Korean patients with asthma than in those from other countries, while the rate of asthma exacerbations in Korea is higher than in other countries. Thus, an epidemiologic study on SABA use and the relationship between SABA overuse and treatment outcomes in asthma is needed in Korea. We performed a cross-sectional study using the National Health Insurance Service-National Sample Cohort 2002-2012 database.

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Breast cancer surgery significantly affects the shoulder's range of motion (ROM) and strength. However, the extent of shoulder impairment, as well as patterns of recovery immediately after surgery, is not fully understood. Therefore, we aimed to investigate shoulder ROM and strength during the early recovery phase after surgery.

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Article Synopsis
  • Obstructive sleep apnea (OSA) may negatively affect peripheral vestibular function due to intermittent hypoxia, leading to potential vestibular disorders.
  • A nationwide study in Korea compared individuals with diagnosed OSA to a matched group without OSA, revealing a significantly higher incidence of peripheral vertigo in the OSA group.
  • Results showed that OSA was linked to increased rates of specific vestibular disorders like benign paroxysmal positional vertigo, Meniere's disease, and vestibular neuritis, stressing the importance of considering these issues during OSA consultations.
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Background: The guidelines for reducing surgical site infection in colorectal surgery recommend mechanical bowel preparation with oral antibiotics; however, this recommendation remains controversial. This study aimed to reveal the effect of oral antibiotics combined with mechanical bowel preparation in colorectal surgery.

Methods: This study was a nationwide population-based retrospective study.

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There are insufficient data regarding the relationship between non-cystic fibrosis bronchiectasis and incident aspergillosis. We performed a population-based, matched cohort study using data from the Korean National Health Insurance database between 2003 and 2013. The incidence of aspergillosis was 50/100,000 person-years in the bronchiectasis cohort and 11/100,000 person-years in the matched cohort (subdistribution hazard ratio, 4.

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Background: Long-term corticosteroid (CS) use is associated with increased mortality in patients with asthma, and comorbid bronchiectasis is also associated with frequent asthma exacerbation and increased healthcare use. However, there is limited information on whether bronchiectasis further increases mortality in patients with CS-dependent asthma. This study examined the impact of bronchiectasis on mortality in patients with CS-dependent asthma.

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