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Sim Ga-yang

Kyung Hee University · 医学

研究室紹介

Professor Sim Ga-yang's research lab specializes in geriatric and rehabilitative medicine, focusing on the intersection of aging, musculoskeletal health, and chronic disease management. Key research directions include the application of digital health technologies—such as augmented reality and wearable systems—in postoperative and neurological rehabilitation, as well as the investigation of systemic biomarkers (e.g., NLR) and body composition (e.g., sarcopenia, obesity) in predicting functional outcomes among older adults. The lab also explores non-invasive therapies like extracorporeal shockwave therapy for managing spasticity in neurological conditions.

geriatric rehabilitationsarcopeniadigital healthobesity and agingneurological recovery

Research Overview

Papers
29
Total Citations
246
Papers (5y)
27
Primary Field
医学

Research Output Trend

Figures are computed from collected data and may differ slightly.

Publications per year (5y)
27total
2022
2023
2024
2025
2026
Citations per year (5y)
211total
20222023202420252026

Selected Papers

15
1
Article|35 citations·2023
A randomized controlled trial of postoperative rehabilitation using digital healthcare system after rotator cuff repair
Ga Yang Shim, Eun Hye Kim, Yun-jeong Baek, Won Kee Chang, Bo Ram Kim, Joo Han Oh, Jong In Lee, Ji Hye Hwang, Jae‐Young Lim
SJR Q1npj Digital MedicineOA

A digital healthcare system based on augmented reality (AR) has promising uses for postoperative rehabilitation. We compare effectiveness of AR-based and conventional rehabilitation in patients after rotator cuff repair (RCR). This study randomly allocates 115 participants who underwent RCR to digital healthcare rehabilitation group (DR group) and conventional rehabilitation group (CR group). The DR group performs AR-based home exercises using UINCARE Home+, whereas the CR group performs brochur

SurgeryMedicine
2
Article|33 citations·2019
Duration of Treatment Effect of Extracorporeal Shock Wave on Spasticity and Subgroup-Analysis According to Number of Shocks and Application Site: A Meta-Analysis
Jae Ho Oh, Hee Dong Park, Seung Hee Han, Ga Yang Shim, Kyung Yeul Choi
SJR Q1Annals of Rehabilitation MedicineOA

OBJECTIVE: To investigate duration of the treatment effect of extracorporeal shockwave therapy (ESWT) on spasticity levels measured with Modified Ashworth Scale (MAS) regardless of the patient group (stroke, multiple sclerosis, and cerebral palsy) and evaluate its spasticity-reducing effect depending on the number of shocks and site of application. METHODS: PubMed, EMBASE, the Cochrane Library, and Scopus were searched from database inception to February 2018. Randomized controlled trials and cr

NeurologyMedicine
3
Article|29 citations·2023
Postoperative rehabilitation using a digital healthcare system in patients with total knee arthroplasty: a randomized controlled trial
Ga Yang Shim, Eun Hye Kim, Seong Joo Lee, Chong Bum Chang, Yong Seuk Lee, Jong In Lee, Ji Hye Hwang, Jae‐Young Lim
SJR Q1Archives of Orthopaedic and Trauma Surgery
SurgeryMedicine
4
Article|18 citations·2023
Neutrophil-to-Lymphocyte Ratio as a Predictor of Short-Term Functional Outcomes in Acute Ischemic Stroke Patients
Min-Su Kim, Min Young Heo, Hyo Jin Joo, Ga Yang Shim, Jinmann Chon, Sung Joon Chung, Yunsoo Soh, Myung Chul Yoo
SJR Q2International Journal of Environmental Research and Public HealthOA

Background: Neutrophil-to-lymphocyte ratio (NLR), a systemic inflammatory biomarker, has been associated with poorer outcomes in acute ischemic stroke patients. The present study was designed to expand these findings by investigating the association between NLR and short-term functional outcomes in acute ischemic stroke patients. Methods: This retrospective study evaluated patients within 7 days after the onset of acute ischemic stroke. Stroke severity on admission was measured using the Nationa

NeurologyNeuroscience
5
Article|17 citations·2023
Global, Regional, and National Burden of Spine Pain, 1990-2019: A Systematic Analysis of the Global Burden of Disease Study 2019
Ga Yang Shim, Jung‐Woo Choi, Hyeon Jin Kim, Rosie Kwon, Min Seo Kim, Myung Chul Yoo, Masoud Rahmati, Wonyoung Cho, Dong Keon Yon
SJR Q1Archives of Physical Medicine and Rehabilitation
PharmacologyMedicine
6
Article|15 citations·2023
Cross‐sectional and longitudinal association between atrial fibrillation and sarcopenia: Findings from the Korean frailty and aging cohort study
Ga Yang Shim, Miji Kim, Chang Won Won
SJR Q1Journal of Cachexia Sarcopenia and MuscleOA

BACKGROUND: Sarcopenia is commonly observed in patients with cardiovascular diseases. However, studies on the association between sarcopenia and atrial fibrillation and their causal relationships are limited. We performed cross-sectional and longitudinal analyses to investigate the association between sarcopenia and atrial fibrillation among community-dwelling older adults. METHODS: A total of 2225 participants from the Korean Frailty and Aging Cohort Study (KFACS) from 2016 to 2017 were include

PhysiologyMedicine
7
Article|11 citations·2024
The Impact of the Physical Activity Level on Sarcopenic Obesity in Community-Dwelling Older Adults
Seong-Min Choi, Jinmann Chon, Myung Chul Yoo, Ga Yang Shim, Minjung Kim, Miji Kim, Yunsoo Soh, Chang Won Won
SJR Q2HealthcareOA

Previous studies have reported that low levels of physical activity result in sarcopenic obesity (SO). However, the effects of specific intensities of physical activity on SO and the optimal amount of physical activity for lowering the prevalence of SO have not been well studied. This study aimed to identify the effects of physical activity levels and intensity on SO and the optimal amount of physical activity related to a lower prevalence of SO. This cross-sectional study used data from the nat

PhysiologyMedicine
8
Article|11 citations·2024
Obesity, Physical Performance, Balance Confidence, and Falls in Community-Dwelling Older Adults: Results from the Korean Frailty and Aging Cohort Study
Ga Yang Shim, Myung Chul Yoo, Yunsoo Soh, Jinmann Chon, Chang Won Won
SJR Q1NutrientsOA

Obesity affects physical functions in numerous ways. We aimed to evaluate the association between obesity and falls, physical performance, and balance confidence in community-dwelling older adults. Using first-year baseline data from the Korean Frailty and Aging Cohort Study, 979 older adults were included. General obesity was defined based on the body mass index and body fat percentage, whereas central obesity was classified based on the waist circumference and waist-to-height ratio. Data regar

Physical Therapy, Sports Therapy and RehabilitationHealth Professions
9
Article|9 citations·2023
Impact of Vitamin B12 Insufficiency on the Incidence of Sarcopenia in Korean Community-Dwelling Older Adults: A Two-Year Longitudinal Study
Seong-Min Choi, Jinmann Chon, Seung Ah Lee, Myung Chul Yoo, Sung Joon Chung, Ga Yang Shim, Yunsoo Soh, Chang Won Won
SJR Q1NutrientsOA

The longitudinal effect of B12 insufficiency on sarcopenia has not yet been investigated in older adults. We aimed to study the impact of B12 levels on alterations in muscle mass, function and strength over two years. Non-sarcopenic older adults (n = 926) aged 70–84 were included. Using the Korean Frailty and Aging Cohort Study, this two-year longitudinal study used data across South Korea. The tools used for assessing muscle criteria were based on the Asian Working Group for Sarcopenia guidelin

PhysiologyMedicine
10
Article|9 citations·2024
The Association of Free Testosterone with Sarcopenic Obesity in Community-Dwelling Older Men: A Cross-Sectional Study
Seongmin Choi, Jinmann Chon, Myung Chul Yoo, Ga Yang Shim, Miji Kim, Yunsoo Soh, Chang Won Won
SJR Q2MedicinaOA

Background and Objectives: Sarcopenic obesity, a clinical condition coexisting with obesity and sarcopenia, is associated with a high risk of functional impairment, reduced quality of life, and increased mortality. A decline in age-related free testosterone (FT) levels has been reported to be associated with decreased muscle mass and muscle strength and increased fat mass. However, the association between low FT levels and risk of sarcopenic obesity has not been well studied. This study aimed to

Endocrinology, Diabetes and MetabolismMedicine
11
Article|9 citations·2024
Impact of Sarcopenia on Falls, Mobility Limitation, and Mortality Using the Diagnostic Criteria Proposed in the Korean Working Group on Sarcopenia Guideline
Ga Yang Shim, Hak Chul Jang, Ki-Woong Kim, Jae‐Young Lim
SJR Q2Annals of Geriatric Medicine and ResearchOA

BACKGROUND: The recent published Korean Working Group on Sarcopenia (KWGS) guideline includes the concept of functional sarcopenia. The study investigated the prevalence of sarcopenia and its association with health-related adverse outcomes defined by the KWGS in community-dwelling older adults. METHODS: Data were sourced from the Korean Longitudinal Study on Health and Aging, focusing on Koreans 65 aged and above. The definitions of sarcopenia and functional sarcopenia followed the KWGS. The ri

PhysiologyMedicine
12
Review|9 citations·2024
Comparative Efficacy of 5% Dextrose and Corticosteroid Injections in Carpal Tunnel Syndrome: A Systematic Review and Meta-analysis
Min Woo Oh, Ji-In Park, Ga Yang Shim, Hyun Ho Kong
SJR Q1Archives of Physical Medicine and Rehabilitation
Radiology, Nuclear Medicine and ImagingMedicine
13
Review|8 citations·2024
Comparison of bioelectrical impedance analysis and dual-energy X-ray absorptiometry for the diagnosis of sarcopenia in the older adults with metabolic syndrome: equipment-specific equation development
Younji Kim, Jaewon Beom, Sang Yoon Lee, Hak Chul Jang, Keewon Kim, Miji Kim, Ga Yang Shim, Chang Won Won, Jae‐Young Lim
SJR Q2Aging Clinical and Experimental ResearchOA

OBJECTIVE: Metabolic syndrome (MetS) and sarcopenia together pose significant health risks, increasing frailty, falls, and fractures in older adults. This study compared muscle mass measurements obtained using two different dual-energy X-ray absorptiometry (DXA) machines and bioelectrical impedance analysis (BIA), and evaluated the accuracy of these measurements in these older adults. METHODS: In this prospective multicenter cohort study, patients aged ≥ 65 years with MetS had their muscle mass

PhysiologyMedicine
14
Article|6 citations·2025
Standardized Measurement of Muscle Strength and Physical Performance for Sarcopenia: An Expert-Based Delphi Consensus
Seung-Kyu Lim, Jaewon Beom, Sang Yoon Lee, Kyunghoon Min, Seong‐Eun Byun, Yonghan Cha, Jun Hwan Choi, Jung‐Yeon Choi, Jae‐Young Han, Hak Chul Jang, Hee‐Won Jung, Kwang‐Il Kim
SJR Q2Annals of Geriatric Medicine and ResearchOA

BACKGROUND: Despite updated sarcopenia guidelines, inconsistent protocols still cause clinical confusion and may compromise diagnostic and outcome accuracy. This Delphi study aimed to establish expert consensus to support the standardization of muscle strength and physical performance assessments for sarcopenia. METHODS: A two-round modified Delphi study was conducted with 26 experts in geriatrics and sarcopenia. Participants completed two rounds of anonymous questionnaires evaluating 39 items a

PhysiologyMedicine
15
Article|5 citations·2024
Therapeutic Efficacy of Ultrasound-Guided Selective Nerve Block on Chronic Cervical Radiculopathy
Hyo Jin Joo, Seongmin Choi, Byoung‐Hoon Kim, Minsu Kim, Ga Yang Shim, Sung Joon Chung, Jinmann Chon, Myung Chul Yoo, Yunsoo Soh
SJR Q2MedicinaOA

Background and Objectives: Cervical radiculopathy (CR) manifests as pain and sensorimotor disturbances in the upper extremities, often resulting from nerve root compression due to intervertebral disc herniation, degenerative changes, or trauma. While conservative treatments are initially preferred, persistent or severe cases may require surgical intervention. Ultrasound-guided selective nerve root block (SNRB) has emerged as a promising intervention for alleviating symptoms and potentially obvia

Pathology and Forensic MedicineMedicine

Research Areas

PhysiologySurgeryNeurologyPharmacologyPhysical Therapy, Sports Therapy and RehabilitationEndocrinology, Diabetes and Metabolism

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