Sunyoung Kim

Sunyoung Kim
Kyung Hee University · College of Medicine

Ph.D

About

86
Publications
10,659
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2,096
Citations
Introduction
Sunyoung Kim currently works at the Department of Family Medicine, Kyung Hee University Medical Center. Sunyoung does research in Geriatrics. Their most recent publication is 'Test-retest Reliability and Sensitivity to Change of a New Fall Risk Assessment System: A Pilot Study'.

Publications

Publications (86)
Article
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Background The 5-times chair stand test (5CST) is a proxy tool for measuring physical performance and muscle strength in diagnosing sarcopenia. The Asian Working Group for Sarcopenia 2019 guidelines recommends the 5CST for evaluating gait speed, whereas the European Working Group on Sarcopenia in Older People guidelines recommend the chair stand te...
Preprint
Background: Constipation is one of the most common health problems among the elderly, and cognitive impairment is also a major health problem among the elderly. Identifying risk factors for cognitive impairment is important to prevent many cognitive disorders. Though studies on cognitive decline in patients with Parkinson’s disease are available, n...
Article
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Background and objective: Sarcopenia is mainly results from aging; however, it is more prevalent in chronic airway disease such as obstructive pulmonary disease (COPD). Hand grip strength (HGS) can be used as an indicator to evaluate sarcopenia. We aimed to assess the association between HGS and severity of airflow limitation (AFL) in the general...
Preprint
Background: Sarcopenia, a progressive and generalized skeletal muscle disorder involving accelerated loss of muscle mass and muscle function, is a common condition in older individuals. This study aims to determine whether sleep latency and duration are independently associated with incident sarcopenia and to explore sex differences in these associ...
Article
Objective Aging causes changes in body composition, in which differences in the distribution and amount of fat and muscle tissue affect various diseases according to sex. We conducted a systemic review of the literature and examined the relationship between body composition differences and related health conditions or diseases among older men and w...
Article
Stroke-related disabilities cause poor physical performance, especially among older adults, and can lead to sarcopenia. Functional electrical stimulation (FES) has been used to improve physical performance in individuals with neurological disorders and increase muscle mass and strength to counteract muscle atrophy. This review covers the principles...
Article
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The prevalence of cardiocerebrovascular disease (CVD) is continuously increasing, and it is the leading cause of human death. Since it is difficult for physicians to screen thousands of people, high-accuracy and interpretable methods need to be presented. We developed four machine learning-based CVD classifiers (i.e., multi-layer perceptron, suppor...
Article
Objective : Evidence regarding the primary preventive effects of statin in the elderly is inadequate. This study aimed to determine the duration and intensity of statins beneficial in adults aged ≥75 years for primary prevention. Methods : This is a retrospective longitudinal study, using the National Health Insurance Corporation-Senior Cohort dat...
Article
Aging has become a global problem, and the interest in healthy aging is growing. Healthy aging involves a focus on the maintenance of the function and well-being of elderly adults, rather than a specific disease. Thus, the management of frailty, which is an accumulated decline in function, is important for healthy aging. The adaptation method was u...
Article
Background: Resilience refers to the ability to recover function after encounter with stressors. While psychological resilience refers to the ability to cope with psychological stress, physical resilience refers to functional restoration after biomedical challenges. However, there is no gold standard to assess physical resilience. Accordingly, we...
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Introduction Young adults receive health screenings at lower rates than other age groups, and it may be difficult to detect diseases in the early stages for this group. We examined differences in health status relative to smoking in a young age group using the results of health screenings conducted in engaged and newly married couples in a cross-se...
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Mild cognitive impairment (MCI) and depression are common and frequently misdiagnosed in older adults in primary care. In particular, depression combined with cognitive dysfunction is associated with a higher risk of dementia. We tried to find the usefulness of orientation to time as an easy case-finding tool for suspecting MCI or depression. This...
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Background: We evaluated the validity of the Timed Up and Go test (TUG) to screen for physical frailty and low physical performance in a nationwide community-dwelling Korean older population. Methods: We used baseline records of 3,010 ambulatory participants with TUG data from the Korean Frailty Aging Cohort Study from 2016 to 2017. The populati...
Article
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Background: In older adults, the risk of frailty is higher among those who are unmarried than among those who are married. However, no study has reported about the relationship between cohabitation status and frailty. Methods: This cross-sectional study included 2,128 community-dwelling adults aged between 70 and 84 years who underwent interview...
Article
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Background: This study aimed to identify adverse events and mortality in adults aged 75 years and older who were initially prescribed statins for primary prevention. Methods: This retrospective study analyzed the data from the National Health Insurance Corporation-Senior Cohort from 2002 to 2015. An exact block matched model was constructed from...
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Background/aims: We aimed to assess validity of the Korean Frailty Index (KFI) and the modified KFI (mKFI) in nationwide Korean population as screening measures for frailty status in older adults. Methods: Analysis was performed in the records of baseline assessments of 2,886 participants in the Korean Frailty Aging Cohort study from 2016 to 201...
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Background/aims: Frailty is mainly due to an age-related decrease in the physiological reserves needed to maintain biological homeostasis, but it can also occur as a result of chronic diseases. The purpose of this study was to identify illnesses associated with frailty in Korean community-dwelling older adults. Methods: This was a cross-sectiona...
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Purpose The purpose of the Korean Frailty and Aging Cohort Study (KFACS) is to initiate a nationwide, population-based prospective cohort study of older adults living in the community to assess their frailty status and explore transitions between frailty states over time in Korea. Participants The KFACS is a multicentre longitudinal study with the...
Article
Clinical and research interest in sarcopenia has burgeoned internationally, Asia included. The Asian Working Group for Sarcopenia (AWGS) 2014 consensus defined sarcopenia as "age-related loss of muscle mass, plus low muscle strength, and/or low physical performance" and specified cutoffs for each diagnostic component; research in Asia consequently...
Article
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Background: We aimed to assess the clinical characteristics of sarcopenia by the original and revised European Working Group on Sarcopenia in Older People (EWGSOP 1 and 2), and to propose a new sarcopenia phenotype score (SPS) to improve relevance of clinical outcomes. Methods: Analyses were performed in 1408 older adults of the Aging Study of P...
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Objective: The purpose of this study was to develop a screening questionnaire for frailty based on the Fried frailty phenotype (FFP) in community-dwelling older adults. Design: Cross-sectional data analysis of a cohort study. Setting and participants: The study used baseline data from the Korean Frailty and Aging Cohort Survey, a multicenter l...
Article
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Background: We aimed to compare 4 automatic devices with a conventional stopwatch for measuring gait speed. Methods: We used 4 experimental devices to automatically measure gait speed: 1) Gaitspeedometer (GSM) 1, with laser sensors; 2) GSM2, with ultrasound sensors; 3) GSM3, with infrared sensors; and 4) GSM4, with a light detection and ranging...
Article
Objectives This study was conducted to find an optimal questionnaire to evaluate the slow gait speed seen in community dwelling elderly. Design Four questions asking about difficulty in walking were compared against the measured usual gait speed. The questions were: 1) Is it difficult to walk 100 m without help? 2) Is it difficult to walk 300 m wi...
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Background/aims: Growth differentiation factor-15 (GDF-15) expression has been reported to increase in response to tissue damage and has recently emerged as a useful biomarker for various diseases. Although emerging evidence supports the clinicopathological value of GDF-15 in renal impairment, few studies have analyzed it in the elderly. Thus, we...
Article
Aim Can frailty be diagnosed using previously recorded medical data in Korean older people? Findings The prevalence of frailty among Korean older persons was 3.4%. Frail older persons showed higher mortality, long-term care facility institutionalization, and hip fracture than those of robust older persons. Message Frailty can be diagnosed using p...
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Objective The aim of this study was to determine how sodium intake can affect frailty, but not anorexia, in community-dwelling older adults in Korea. Design This was a cross-sectional study. Setting The study used data from the Korean Frailty and Aging Cohort Survey (KFACS), a multi-center longitudinal study addressing 10 centers across urban, ru...
Article
Objectives: To determine whether hearing loss is associated with social frailty in older adults. Methods: Cross-sectional analysis of cohort study data. Hearing was measured using of Pure-tone audiometry. Hearing loss was determined based on the average of hearing thresholds at 0.5, 1, and 2 kHz in the ear that had better hearing. Social frailty...
Article
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Objective To predict the risk of falls, Fall Risk Assessment (FRA) system has been newly developed to measure multi-systemic balance control among community-dwelling older adults. The aim of this study was to examine the association between FRA and fall-related physical performance tests. Methods A total of 289 community-dwelling adults aged 65 ye...
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Background: The aim of this study was to examine the correlation between the number of remaining natural teeth (NRT) and the appendicular skeletal muscle mass index (SMI) in older adults. Methods: This study was based on data from the 2008-2010 Korea National Health and Nutritional Examination Surveys. The participants were 2,378 older participa...
Article
There is ongoing effort to discharge patients early after hip fracture surgery to reduce the medical and economic burden. We tried to find whether there is any related side effect, and discovered that early discharge, especially before 10 days after surgery, is associated with higher mortality. Introduction The aim of this study was to analyze the...
Article
Objectives To test whether sleep disturbances are associated with frailty in older men and women. Design Cross-sectional analysis of cohort study data. The participants were 1168 community-dwelling older adults aged 70 to 84 years who took part in the Korean Frailty and Aging Cohort Study and completed both self-reported sleep parameters and asses...
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Link between physicaL fraiLty and cognitive impairment With increasing life expectancy, frailty and cognitive impairment are being recognized as major threats to healthy aging and quality of life. Frailty in late life predisposes the individual to increased vulnerability to stressors, elevating the risk of disability, institutionalization, and mort...
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Aim Geriatric syndromes are common among older individuals, and can affect their health and quality of life. The present study aimed to determine if combinations of geriatric syndromes affected adverse outcomes among older Koreans. Methods Korean national health insurance data were collected for a cohort of 5 058 720 individuals who were aged ≥65...
Article
Objectives This study was conducted to determine the cutoff value and efficacy of the EuroQol Visual Analogue Scale (EQ-VAS) for predicting frailty. DesignThe EQ-VAS medians (Interquartile Range) were compared and analyzed against the FFI. ParticipantsThe subjects were 1471 older adults aged 70 to 84 years who had completed both EQ-VAS and Fried Fr...
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Background: The new fall risk assessment (FRA) system is a composite and comprehensive assessment tool developed to predict the risk of falls. The aim of this pilot study was to examine the new FRA system's test-retest reliability and sensitivity to change in community-dwelling older adults. Methods: This was an observational study with a test-r...
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With the rapid increase in the number of Korean older adults, developing and integrating quality, expert older adult care in the Korean health care system will be essential and a tremendous benefit to these older adult patients, their families, and Korean society. While the awareness of geriatric medicine as a specialty for physicians caring exclus...
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Background The purpose of this study was to explore the optimal cut-off point of calf circumference (CC) as a simple proxy marker of appendicular skeletal muscle mass (ASM) and sarcopenia in the Korean elderly and to test the criterion-related validity of CC by analyzing its relationships with the physical function. Methods The participants were 6...
Article
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Background : Accurate measurement of the frequency of falls is challenging because falls can only be self-reported. We hypothesized that quarterly surveys over a year would be superior to a 1-time annual survey for older adults to recall the number of falls they experienced more accurately. Methods : We recruited 317 community-dwelling older adults...
Article
Background/Objectives: This study aimed to identify the pattern of initial antipsychotic prescriptions among dementia patients in Korean long-term care facilities (LTCFs), despite safety issues, and to investigate various factors correlated with their use. Methods: We used a population-based senior cohort database of the Korean National Health Insu...
Chapter
Breathlessness in older adults is a common symptom of cardiovascular, respiratory diseases, psychological disorders such as panic disorder, and respiratory muscle weakness, but this symptom is also prevalent during daily activities as a result of age-related changes. With ageing, physical fitness, the strength of respiratory muscles and elastic rec...
Article
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Background The number of North Korean adolescent defectors entering South Korea has been increasing. The health behavior, including mental health-related behavior, and factors associated with depression in North Korean adolescent defectors residing in South Korea were investigated. Methods Data obtained from the Korea Youth Risk Behavior Web-Based...
Article
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Background : Falls, in older adults, can worsen physical functioning and lead to serious complications. Thus, as a means of preventive intervention, this high-risk group should be screened. The aim of the present study was to investigate whether reaction time is clinically applicable as a fall risk assessment tool. Methods : The study participants...
Article
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Background : This study was conducted to identify the risk factors of geriatric syndromes including fall-related fractures, delirium, incontinence, and pressure ulcers using the Korean nationwide claims data. Methods : The claims data of the Korean National Health Insurance Service between 2006 and 2015 were used. We included older people, 65 years...
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Objectives: The SARC-F is a simple sarcopenia screening tool comprising 5 assessment items: strength, assistance walking, rising from a chair, climbing stairs, and falls. The present study aimed to examine the validation of the Korean version of SARC-F for elderly individuals residing in communities. Setting and participants: From the first year...
Article
Background Rehabilitation programs before and after hip surgery can shorten the length of hospital stay, reduce the incidence of complications, and reduce the readmission rate after surgery in older adults aged 65 years or over. The present study aimed to investigate the status of readmissions within 30 days after discharge and related factors in e...
Article
Background: In Western countries, prophylaxis for venous thromboembolism (VTE) following major lower limb orthopaedic surgeries is recommended. However, that has not been the case in Asian countries, where the reported incidence of postoperative VTE has been low. The present study examined trends in VTE prophylaxis prescriptions and related compli...
Article
Background: Antihypertensive medication represents one of the most common prescriptions for senior individuals. Numerous studies have assessed the influence of antihypertensive treatment on the risk for osteoporotic fracture, yet much controversy remains. We analyzed the relationship between the incidence of osteoporotic fracture and the average n...
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Background Body mass index is widely regarded as an important predictor of mortality. The purpose of this study was to investigate the relationship between body mass index and mortality and to compare community-dwelling elderly people in South Korea according to sex. Methods Data were collected from the 2008 and 2011 Living Profiles of Older Peopl...
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Background: Some disagreements surround the effects of calcium-channel blockers (CCBs) on the risk of dementia. The purpose of this study was to investigate the protective effects of CCBs on dementia among elderly hypertensive Koreans.Methods?and?Results:We conducted a large population-based cohort study using the senior cohort database of the Kor...
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Background/Purpose Slower gait speed is a good predictor of falls, dependency, disability, and mortality. However, the cutoff point of the gait speed to best predict the bad outcomes is controversial. The purpose of this study was to determine the cutoff point of gait speed that best predicts Instrumental Activities of Daily Living (IADL) dependenc...
Article
Background: Gait speed has been recommended as a potentially useful clinical indicator of well-being among older adults. Gait speed is also reportedly a powerful predictor of adverse outcomes including death. The purpose of this study was to investigate the relationship between gait speed and mortality and to determine the gait speed cut-off point...
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Background: With an aging population, medical expenses for elderly patients are increasing rapidly. Frailty is currently considered an important issue in geriatrics. The purpose of this study was to investigate the effect of frailty on medical expenses in elderly Korean patients. Material and methods: Data were gathered from the 2008 and 2011 livin...