Min-Kyun Oh

Background and objectives: Musculoskeletal (MSK) pain significantly impacts physical activity and quality of life in older adults, potentially influencing mortality. This study explored the relationship between MSK pain, physical activity, muscle mass, and mortality among older adults. Material and Methods: We studied 1000 participants in the Korea...

Background and objectives: Musculoskeletal (MSK) pain significantly impacts physical activity and quality of life in the elderly, potentially influencing mortality. This study explored the relationship between MSK pain, physical activity, muscle mass, and mortality among older adults. Material and Methods: We studied 1000 participants of the Korean...

Most patients with stroke suffer from complications and these include dysphagia. Dysphagia can cause malnutrition, and malnutrition affects prognosis and recovery. However, there is a lack of accurate studies on the nutritional status of stroke patients with dysphagia and its associated factors in different phases of stroke. This study retrospectiv...

Background: This study was performed to update the current evidence and evaluate the effects of robot-assisted rehabilitation (RAR) in comparison with conventional rehabilitation (CR) in patients following total knee (TKR) or hip replacements (THR). Methods: PubMed Central, OVID Medline, Cochrane Collaboration Library, and EMBASE for a comprehensi...

Traumatic brain injury (TBI) is brain damage which is caused by the impact of external mechanical forces. TBI can lead to the temporary or permanent impairment of physical and cognitive abilities, resulting in abnormal behavior. We recently observed that a single session of early exercise in animals with TBI improved their behavioral performance in...

Balance problems can be the major cause of falling. Existing gait balance rehabilitation devices usually have limited overground usability due to low portability. Therefore, there is need for development of a portable gait balance rehabilitation system. To fulfill this need, a wearable balance biofeedback system is proposed that utilizes a pair of...

Performance of trunk rehabilitation exercises while sitting on movable surfaces with feet on the ground can increase trunk and leg muscle activations, and constraining the feet to move with the seat isolates control of the trunk. However, there are no detailed studies on the effects of these different leg supports on the trunk and leg muscle activa...

In this study, we investigated the effects of carbonated water concentration on swallowing function using surface electromyography (sEMG). Healthy subjects (n = 52, 26.77 ± 3.21 years old) were asked to perform two swallows each of noncarbonated water, low-concentration carbonated water, medium-concentration carbonated water, and high-concentration...

The high portability of vibrotactile feedback systems makes them suited to wearable applications, which improves their usability for rehabilitation applications encompassing a variety of environments and scenarios. A number of works have explored the relationship between arm movement and gait parameters such as gait variations and age on the arm sw...

Objective: To retrospectively review the characteristics of preschool children with speech and language disorders to determine their clinical features and compares the average degrees of language delay based on hospital visit purposes, language developmental delay causes, and maternal language. Methods: One thousand one hundred two children (832...

Objectives: To report the effects of scrambler therapy in patients diagnosed with failed back surgery syndromes and to analyze the factors affecting pain before and after the therapy. Methods: This study included 26 patients (12 males and 14 females). The Oswestry Disability Index (ODI) and Brief Pain Inventory (BPI) before and after scrambler t...

Background To compare long-term effects of antigravity treadmill (AGT) combined with conventional rehabilitation (CR) and CR after hip fracture in patients with sarcopenia. Methods 45 patients were randomly allocated to AGT combined with CR (experimental group) or CR (control group) for 10 consecutive working days. Participants were evaluated prio...

Background. The complications after stroke inhibit functional recovery and worsen the prognosis of patients. The implementation of a critical pathway (CP) can facilitate functional recovery after stroke by enabling comprehensive and systematic structured rehabilitation. Objective. To evaluate the effects of the implementation of CP in stroke patien...

The aim of gait rehabilitation is to achieve independent ambulation. Somatosensory augmentation with external haptic sources can improve the subject’s ability to walk or stand. This paper presents the development and evaluation of a robotic system prototype that delivers haptic forces to aid overground gait rehabilitation. This portable system is b...

Background: Myofascial pain syndrome (MPS) is commonly seen in clinical settings and negatively influences a patient's daily life. Recently, the application of extracorporeal shock wave therapy (ESWT) has been utilized as one of the treatment methods for MPS. The aim of this systematic review and meta-analysis was to summarize the current evidence...

Background: Dystonic gait (DG) is one of clinical symptoms associated with functional dystonia in the functional movement disorders (FMDs). Dystonia is often initiated or worsened by voluntary action and associated with overflow muscle activation. There is no report for DG in FMDs caused by an abnormal pattern in the ankle muscle recruitment strat...

Background: Calcific tendinopathy denotes calcific deposits in a specific tendon. It is also known as calcifying tendinitis, calcifying periarticulitis, or periarticular apatite deposition disease. Recently, extracorporeal shock wave therapy (ESWT) has been reported to be effective in relieving and treating pain in calcific tendinopathy. Case sum...

Objective: To investigate the risk factors for fall in the elderly population residing in rural areas of Korea and provide useful data for their prevention. Methods: As part of farmers' health promotion project, a retrospective study was conducted with a total of 350 elderly people recruited from March 2016 to December 2016. These subjects were...

Variations in biofeedback coding schemes for postural control, in recent research, have shown significant differences in performance outcomes due to variations in coding schemes. However, the application of vibrotactile biofeedback coding schemes to gait symmetry training is not well explored. In this paper, we devised various vibrotactile biofeedb...

Diabetic neuropathy is a common complication that can negatively influence balance and is a major cause of falls. We evaluated the association between postural sway and diabetic autonomic neuropathy (DAN) among patients with diabetic peripheral neuropathy (DPN). Patients with DPN documented by typical symptoms with abnormal results of nerve conduct...

Abstract Background Integration of kinesthetic and tactile cues for application to post-stroke gait rehabilitation is a novel concept which needs to be explored. The combined provision of haptic cues may result in collective improvement of gait parameters such as symmetry, balance and muscle activation patterns. Our proposed integrated cue system c...

Objective To evaluate the effects of zolpidem on functional recovery in a rat model of acute ischemic stroke. Methods Following ischemic stroke procedures, 42 rats (six in each group) were randomly assigned to receive zolpidem (0.1, 0.25, 0.5, 1.0, 2.0 or 4.0 mg/kg) or normal saline administer intraperitoneally once daily for two weeks. Motor beha...

This paper evaluates the prospects of using a novel Integrated Haptic Feedback (IHF) system. IHF can provide over-ground gait training regimens for post-stroke ambulatory subjects. IHF system combines the use of a portable cane for kinesthetic feedback and a wearable vibrotactor array for tactile feedback. Continuous somatosensory input is aiforded...

Gait rehabilitation following stroke is often stated as the primary goal to improve quality of life. A wearable augmented feedback system which provides vibrotactile cues for post-stroke gait training is presented in this research. The system is capable of determining temporal gait parameters and thus identifies gait irregularities. A pair of custo...

“Clinical Practice Guideline for Stroke Rehabilitation in Korea 2016” is the 3rd edition of clinical practice guideline (CPG) for stroke rehabilitation in Korea, which updates the 2nd edition published in 2014. Forty-two specialists in stroke rehabilitation from 21 universities and 4 rehabilitation hospitals and 4 consultants participated in this u...

Among most existing gait rehabilitation robots, it is difficult to find adequate devices for gait rehabilitation of chronic stroke patients who can already stand and move but still need to rehabilitate the affected lower limb through simple, compact, and easy-to use devices. This paper presents a novel haptic based gait rehabilitation system (HGRS)...

Objective To determine the prevalence and related characteristics of carpal tunnel syndrome (CTS) in orchardists and to investigate the association between electrodiagnostic severity and physical examinations. Methods Between July 2013 and September 2014, 377 subjects (174 men and 203 women) visited the Gyeongsang National University Hospital's Ce...

Objective: To assess the effect of core strengthening exercises on Cobb angle and muscle activity in male college students with functional scoliosis. Methods: Static and dynamic back muscle activity were evaluated via surface electromyography (sEMG). A core exercise protocol comprising 18 exercises was performed three times/week for 10 weeks. Pa...

Background A biofeedback-based balance training system can be used to provide the compromised sensory information to subjects in order to retrain their sensorimotor function. In this study, the design and evaluation of the low-cost, intuitive biofeedback system developed at Gyeongsang National University is extended to provide multimodal biofeedbac...

Torticollis is an usual symptom that can be the result of various disorders, such as sternocleidomastoid muscle pathology, bony abnormalities of the cervical spine, disorders of the central or peripheral nervous system, various ocular diseases, and brain tumors, especially in children. A 12-month-old male visited our hospital because of torticollis...

Background and purpose: To determine the initial factors, including patient characteristics, stroke etiology and severity, time factors, and imaging findings, that could affect the clinical outcome of patients with acute ischemic stroke (AIS) caused by basilar artery occlusion (BAO) where successful recanalization was achieved via mechanical throm...

Biofeedback based exercises results in post-training improvements of postural stability. Various modalities have been used to provide a biofeedback system for training of balance control and postural stability. However a multimodal biofeedback system can offer more individualized training methods and hence provide therapists with a comprehensive so...

This research aims to develop a novel gait assistive device with enhanced gait stability and training efficiency for stroke patients. The proposed assistive device for mobility aid is composed of a motored wheel and a cane for providing only a light grip force, which prevent a patient using excessive support force of an upper limb like a convention...

Gait asymmetry caused by hemiparesis results in reduced gait efficiency and reduced activity levels. In this paper, a portable rehabilitation device is proposed that can serve as a tool in diagnosing gait abnormalities in individuals with stroke and has the capability of providing vibration feedback to help compensate for the asymmetric gait. Force...

The purpose of this research is to develop a gait assistive device to enhance the gait stability and training efficiency of stroke patients. The configuration of this device is mainly composed of a motored wheel and a single cane whose lower end is attached to a motored wheel frame. A patient can feel haptic information from continuous ground conta...

Haptic control is a useful therapeutic option in rehabilitation featuring virtual reality interaction. As with visual and vibrotactile biofeedback, kinesthetic haptic feedback may assist in postural control, and can achieve balance control. Kinesthetic haptic feedback in terms of body sway can be delivered via a commercially available haptic device...

It is important to develop a robotic orthosis or exoskeleton that can provide back-drivable and good assistive performances with lightweight structures for overground gait rehabilitation of stroke patients. In this paper, we describe a robotic knee device with a five-bar linkage to allow low-impedance voluntary knee motion within a specified rotati...

Acute ischemic stroke (AIS) caused by basilar artery occlusion (BAO) is a very severe neurological disease with a high mortality rate and poor clinical outcomes. In this study, we compared our experience of mechanical thrombectomy using the Solitaire stent (Solitaire thrombectomy) and manual aspiration thrombectomy using the Penumbra reperfusion ca...

Objective: To evaluate the effects of the implementation of critical pathway (CP) in stroke patients treated at a single university hospital. Methods: A retrospective medical review collected data from 497 patients who had suffered acute stroke in the rehabilitation center. Stroke outcomes were compared between before and after the implementatio...

Objective To obtain information on the socioeconomic, medical, and functional status of polio survivors, and to use these results as the preliminary data for establishing the middle-aged cohort of polio survivors. Methods The subjects were recruited based on the medical records of multiple hospitals and centers. They were assessed through a struct...

Haptic device can be a useful rehabilitation tool in balance training. The proposed system is composed of a body-wear smartphone, Phantom Omni® device, and its control PC system. Ten young healthy subjects performed balance tasks with different postures during 30 seconds with their eyes closed. An Android program on the smartphone transferred medio...

Objective: To investigate the safety, feasibility and preliminary efficacy of low-frequency repetitive transcranial magnetic stimulation (rTMS) over the cerebellum in ataxic patients with acute posterior circulation stroke. Design: Randomized, double-blind, sham-controlled pilot study. Patients: Thirty-two ataxic patients with posterior circul...

The feasibility, safety and effectiveness of emergency carotid artery stenting (eCAS) in patients with acute ischemic stroke (AIS) due to proximal internal carotid artery (ICA) stenosis or occlusion are still controversial. In this study we analyzed our experience with eCAS in patients with AIS. Twenty-two eCAS procedures for proximal ICA stenosis...

Terson syndrome is a vitreous hemorrhage associated with subarachnoid hemorrhage. This can be caused by spontaneous, aneurysmal rupture or traumatic subarachnoid hemorrhage, but never has been reported as a consequence of hemorrhage due to thrombolysis and thrombectomy treatments of acute ischemic stroke patient. A 48-year-old man presented with le...

Medial antebrachial cutaneous (MABC) nerve injury associated with iatrogenic causes has been rarely reported. Local anesthesia may be implicated in the etiology of such injury, but has not been reported. Two patients with numbness and painful paresthesia over the medial aspect of the unilateral forearm were referred for electrodiagnostic study, whi...

In this paper, we have proposed a novel robotic knee device with a five-bar linkage to allow low impedance voluntary knee motions within a specified rotation range during swing phase and to assist knee extension motions during stance phase after reaching the boundary of the rotation range. The proposed device can provide free knee motions through t...

To evaluate the effect of extracorporeal shock wave therapy (ESWT) on lower limb spasticity in subacute stroke patients. We studied thirty hemiplegic subacute stroke patients with ankle plantar flexor spasticity. ESWT was applied for 1 session/week, with a total of 3 sessions at the musculotendinous junction of medial and lateral gastrocnemius musc...

It is not common for a patient who survives cardiac arrest to experience significant neurologic impairment such as acute and chronic post-hypoxic myoclonus, known as Lance-Adams syndrome. This syndrome is predominantly characterized by myoclonus that starts days to weeks after cardiopulmonary resuscitation in patients who regained consciousness. Al...

To examine the intra-rater, inter-rater, and inter-instrumental reliability of the digitalized pinch muscle strength dynamometer. Thirty normal subjects were examined for pinch strength, using both the Preston pinch gauge and the digitalized pinch dynamometer. The participants performed all pinch strength tests in the seated position as recommended...

To assess the efficacy of human placental extract (HPE) in an animal model of rheumatoid arthritis (RA). We used (i) KRN C57BL/6 TCR transgenic x NOD mice (KBx/N) serum transfer arthritis and (ii) collagen-induced arthritis (CIA) mice to evaluate the effi cacy of HPE (1 ul or 100 ul, intra-peritoneal, three times per week) on RA. Incidence, severit...

To assess the intra-rater and inter-rater reliability for measuring tibial torsion measurements by a radiographic method using three-dimensional computed tomography reconstruction (3D-CT) and to compare the physical measures to those of 3D-CT. The study included 33 children who presented with intoeing gait. Tibial torsion was measured by 3D-CT. Dis...

To investigate the association between habitual exercise and fear of falling in an older Korean population. Cross-sectional study conducted in a population-based sample of an urban city. Urban city in South Korea. Randomly sampled older Korean people (N=828; aged ≥65y) living in a typical urban city located in South Korea. Standardized telephone in...

To investigate the physical function of elderly people in Korea using quantitative and objective tools and to assess the impact of declined physical function on their quality of life.

To test the hypothesis that 10 sessions of transcranial direct current stimulation combined with occupational therapy elicit more improvement in motor function of the paretic upper limb than sham stimulation in patients with subacute stroke. Eighteen patients with subacute stroke with hand motor impairment were randomly assigned to one of the three...

To investigate the occurrence of falls and their consequences in a representative population and to identify risk factors of falls in the elderly.

The purpose of this study is to find the change in post-stroke cognitive function during subacute phase, and to investigate factors associated with this change.

Objective: To test the hypothesis that cathodal transcranial direct current stimulation (tDCS) applied to the contralesional cortex (F8 on 10-20 system) during speech training would enhance picture naming ability relative to speech training alone. Design: Double blind, sham-controlled, cross-over design Setting: University hospital Participants: Fi...