Hye-Seon Jeon

Yonsei University, Sŏul, Seoul, South Korea

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Publications (57)36.32 Total impact

  • Myung-Sook Ko · Yon Ju Sim · Do Hyun Kim · Hye-Seon Jeon

    No preview · Article · Jan 2016 · Physiotherapy Canada
  • Sun-Young Kang · Sung-Dae Choung · Hye-Seon Jeon
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    ABSTRACT: Purpose: To investigate how the erector spinae (ES) and gluteus maximus (GM) muscle activity and the anterior pelvic tilt angle change with different hip abduction angles during a bridging exercise. Methods: Twenty healthy participants (10 males and 10 females, aged 21.6 ± 1.6) voluntarily participated in this study. Surface electromyography (EMG) signals were recorded from the ES and GM during bridging at three hip abduction angles: 0°, 15°, and 30°. Simultaneously, the anterior pelvic tilt angle was measured using Image J software. Results: The EMG amplitude of the GM muscle and the GM/ES EMG ratio were greatest at 30° hip abduction, followed by 15° and then 0° hip abduction during the bridging exercise. In contrast, the ES EMG amplitude at 30° hip abduction was significantly lesser than that at 0° and 15° abduction. Additionally, the anterior pelvic tilt angle was significantly lower at 30° hip abduction than at 0° or 15°. Conclusions: Bridging with 30° hip abduction can be recommended as an effective method to selectively facilitate GM muscle activity, minimize compensatory ES muscle activity, and decrease the anterior pelvic tilt angle.
    No preview · Article · Jan 2016 · Manual therapy
  • Kyung-Hoon Yu · Jae-Hun Shim · Sung-Dae Choung · Hye-Seon Jeon

    No preview · Article · Nov 2015
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    Kyung-hoon Yu · Hye-seon Jeon

    Preview · Article · Oct 2015
  • Jeong-Soo Kim · Sun-Young Kang · Hye-Seon Jeon
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    ABSTRACT: The body-weight-support treadmill (BWST) is commonly used for gait rehabilitation, but other forms of BWST are in development, such as visual-deprivation BWST (VDBWST). In this study, we compare the effect of VDBWST training and conventional BWST training on spatiotemporal gait parameters for three individuals who had hemiparetic strokes. We used a single-subject experimental design, alternating multiple baselines across the individuals. We recruited three individuals with hemiparesis from stroke; two on the left side and one on the right. For the main outcome measures we assessed spatiotemporal gait parameters using GAITRite, including: gait velocity; cadence; step time of the affected side (STA); step time of the non-affected side (STN); step length of the affected side (SLA); step length of the non-affected side (SLN); step-time asymmetry (ST-asymmetry); and step-length asymmetry (SL-asymmetry). Gait velocity, cadence, SLA, and SLN increased from baseline after both interventions, but STA, ST-asymmetry, and SL-asymmetry decreased from the baseline after the interventions. The VDBWST was significantly more effective than the BWST for increasing gait velocity and cadence and for decreasing ST-asymmetry. VDBWST is more effective than BWST for improving gait performance during the rehabilitation for ground walking.
    No preview · Article · Oct 2015 · Physiotherapy Theory and Practice
  • Myung-Sook Ko · Jung-Hee Doo · Jeong-Soo Kim · Hye-Seon Jeon
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    ABSTRACT: Aim: The aim of this study was to examine the effects of whole body vibration (WBV) training and conventional physical therapy on spatiotemporal gait parameters, functional mobility and activities of daily living (ADL) in children with cerebral palsy (CP). Methods: A pretest–posttest control group design was used. In this 3-week trial, 24 children with spastic CP were randomly selected to either continue their physical therapy or to receive WBV in addition to their physical therapy programme. Gait analyses, the Timed Up and Go (TUG) test and the Functional Independence Measure for Children (WeeFIM) were conducted before and after training. Results: For spatiotemporal gait parameters, this study found statistically significant differences in the WBV group’s walking speed (p = 0.002), step length of the affected side (p = 0.021) and step width (p = 0.007) pre- and post-training. Between the two groups, there was a statistically significant difference in step width (F = 5.326, p = 0.031) and significant improvements in the WBV group’s TUG scores (p = 0.039) compared with the control group. According to the results of WeeFIM, there were no significant differences between the two groups after training. Conclusions: Administration of WBV training to children with CP in conjunction with conventional physical therapy leads to improvements in functional mobility.
    No preview · Article · Jul 2015 · International Journal of Therapy and Rehabilitation
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    ABSTRACT: The aim of this research was to investigate which shoulder abduction angle (30°, 90°, 150°) during shrug exercise is superior for 1) activating the scapular upward rotators and 2) improving scapular and clavicular position in subjects with scapular downward rotation impairment. Twenty subjects performed shrug exercises at three different shoulder abduction angles (30°, 90°, 150°) which were obtained and maintained actively. Surface EMG data were collected from the levator scapulae (LS), upper trapezius (UT), lower trapezius (LT), and serratus anterior (SA) during shrug exercises. Scapular downward rotation index (SDRI) and clavicular tilt angle (CTA) were measured immediately after each shrug exercise. Oneway repeated-measures analysis of variance was used to determine the significance. UT muscle activity was greater at 90° and 150° than at 30° of shoulder abduction. UT/LS muscle activity ratio was greater at 90° than at 30°. LT and LT/LS increased as shoulder abduction angle increased. SA was greater at 150° than at 30° or 90°. SA/LS was greater at 150° than at 30°. SDRI was lower at 90° and 150° than at 30°. CTA was greater at 90° and 150° than at 30°. In conclusion, shrug exercises at 90° or 150° of shoulder abduction angle may be advocated to activate scapular upward rotators, decrease SDRI, and increase CTA in patients with scapular downward rotation impairment.
    Full-text · Article · Apr 2015 · Journal of Electromyography and Kinesiology
  • Myung-Sook Ko · Hye-Seon Jeon · Sujin Hwang

    No preview · Article · Mar 2015
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    Myung-Sook Ko · Jung-Ah Lee · Sun-Young Kang · Hye-Seon Jeon
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    ABSTRACT: The purpose of this case report is to investigate the long-term effect of Adeli suit treatment (AST) in a child with cerebral palsy (CP) on spatial-temporal gait parameters, 10-meter walking speed, gross motor functional measure (GMFM) and performance on the pediatric balance scale (PBS). An eight-year-old girl with spastic diplegia classified as level III on the Gross Motor Function Classification System participated in this single-subject A-B design study, with a baseline and an intervention phase. The baseline phase was collected at one-week intervals for six weeks and then the AST intervention phase was carried out with 18 AST sessions, 50 min per session, once a week for an 18-week period. Spatial-temporal gait parameters significantly improved after the completion of 18 sessions. Furthermore, 10-meter walking speed, GMFM and PBS changed significantly from the baseline measurement (p < 0.05). In conclusion, the AST was effective in improving gait, gross motor function and balance in a child with diplegic CP. Clinically, neuro-rehabilitation with AST provided a complementary and alternative treatment for lower extremity rehabilitation in this child with CP. These findings provide preliminary evidence supporting the effectiveness of AST in children with spastic CP, and thus underscore the need for additional research in this area.
    Full-text · Article · Dec 2014 · Physiotherapy Theory and Practice
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    ABSTRACT: The goal of the current study was to investigate potential differences in back and hip extensor muscle activity and hip extension force during prone hip extension (PHE) in individuals with lumbar segmental instability (LSI) and asymptomatic subjects. Thirty-six subjects with LSI and 26 asymptomatic volunteers participated in this study. Muscle activity of the erector spinae, gluteus maximus, and biceps femoris was recorded using electromyography (EMG), and hip extension force was measured by a digital force gauge. Muscle activity was significantly greater in subjects with LSI than in asymptomatic subjects during PHE (p < 0.05). Hip extension force was significantly lower in the subjects with LSI than in asymptomatic subjects during PHE (p < 0.05). These findings suggest that during PHE, subjects with LSI have differences in back and hip extensor muscle activity and hip extension force compared to asymptomatic individuals.
    Full-text · Article · Nov 2014 · Manual Therapy
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    ABSTRACT: Background: Tightness of the iliotibial band (ITB) has been documented as a major factor in lateral patellar translation because the ITB inserts into the lateral border of the patella through the iliopatellar band. The aim of this study was to compare the patella-condyle distance (PCD) between subjects with and without ITB tightness. We also investigated the relationship between ITB length and lateral patellar translation in hip adduction. Methods: In 40 healthy volunteers, we measured the ITB length with Ober's test and the PCD at two hip positions (neutral and 20° adduction) using ultrasonography. Lateral patellar translation in hip adduction was calculated by subtracting the PCD at the adduction position from the hip neutral position. Results: Twenty-three of the 40 subjects had ITB tightness; these subjects had a significantly laterally positioned patella at 20° adduction of the hip (p=0.044). Patients with ITB tightness also had greater lateral patellar translation in hip adduction than patients without tightness (p=0.000). The ITB length was moderately correlated with the PCD at 20° adduction of the hip (r=0.427, p=0.042) and strongly negatively correlated with lateral patellar translation (r=-0.717, p<0.000). Conclusions: These findings support the hypothesis that increasing ITB tension has a significant effect on the position of the patella and therefore affects translation of the patella. However, these findings do not indicate that ITB length is the only cause of lateral patellar translation; further studies are needed to assess the relative importance of different factors that could affect patellar position.
    Full-text · Article · Oct 2014 · The Knee
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    Full-text · Article · Sep 2014
  • Jeong-Soo Kim · Hye-Seon Jeon · Yeon-Gyu Jeong

    No preview · Article · Sep 2014
  • Min-Jae Jeon · Hye-Seon Jeon · Chung-Hwi Yi · Heon-Seock Cynn

    No preview · Article · Sep 2014
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    Hye-Seon Jeon · Sun-Young Kang · Joo-Hee Park · Hyun-Sook Lee
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    ABSTRACT: Objective to compare the effects of pulsed electromagnetic field (PEMF) therapy and sham treatment on DOMS-related variables in elbow flexors at 24, 48 and 72 hours after delayed onset muscle soreness (DOMS) induction exercise. Design randomized, double-blind, placebo-controlled study. Setting Yonsei University laboratory. Participants In total, 30 healthy male college students Main outcome measures: Muscle soreness, peak torque, median frequency (MDF) and electromechanical delay (EMD) during isometric contraction at 24, 48 and 72 hours after DOMS induction exercise. Results Overall, the application of the PEMF was found to be effective in reducing the physiological deficits associated with DOMS, including improved recovery of perceived muscle soreness, MDF, and EMD during isometric contraction. Our results did not show that PEMF treatment was mechanically more effective in isometric peak torque generation compared to the sham group. Conclusion this study indicates that PEMF may be useful as a modality to reduce DOMS symptoms. However, further well-designed experiments are required to determine optimal treatment dosage and duration, and to investigate the physiological and clinical mechanisms of PEMF on DOMS.
    Full-text · Article · Mar 2014 · Physical Therapy in Sport
  • Sun-Young Kang · Sung-Dae Choung · Hye-Seon Jeon

    No preview · Article · Feb 2014
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    Jeong-Soo Kim · Jeong-Ah Kim · Hye-Seon Jeon · Kyung-Hoon Yu
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    ABSTRACT: The purpose of this study was to determine which spatiotemporal gait parameters obtained during hemiplegic walking could be a predictive factor for the Timed Up and Go test (TUG). Two hundreds nine subjects who had suffered a stroke were recruited for this study. They were participated in two assessments; the TUG test and gait analysis. The relationship between the TUG test and spatiotemporal parameters was analyzed using Pearson's correlation coefficients. In addition, to predict the spatiotemporal gait parameters that correlated most with the TUG scores, we used multiple linear regression analyses (stepwise method). The results show that the normalized velocity was strongly correlated with the TUG performance (r=-.72, p
    Preview · Article · Nov 2013
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    Joo-Hee Park · Sun-Young Kang · Hye-Seon Jeon
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    ABSTRACT: The smart-phone has become a necessity for most people. In this study, we determined that using a smart-phone for 20 minutes can cause increased neck and shoulder muscle activities and fatigue. Seventeen healthy male smart-phone users who attended Yonsei University played a smart-phone game for 20 minutes and changes in their bilateral cervical erector spinae and upper trapezius muscle activities and fatigue were measured. To assess muscle activities and fatigue, we used the following variables: the median frequency, the 50th percentile Amplitude probability distribution function (APDF) value (median load), and the discrepancy in the 90th percentile APDF value and the 10th percentile APDF value (APDF range). A paired t-test was used to compare pre-smart-phone-use status with post-smart-phone-use-status. The median frequency of the bilateral cervical erector spinae and the upper trapezius decreased significantly after 20 minutes of smart-phone use (p
    Full-text · Article · Sep 2013
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    Sun-Young Kang · Joo-Hee Park · Hye-Seon Jeon · Hyun-Sook Lee
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    ABSTRACT: Delayed onset muscle soreness (DOMS) is a painful condition that arises from exercise-induced muscle damage after unaccustomed physical activities. Various therapeutic interventions have been applied to reduce the intensity and duration of DOMS-related symptoms. Recently, pulsed electromagnetic field (PEMF) intervention has been introduced as an alternative noninvasive treatment for DOMS. This randomized, double-blind, placebo-controlled experiment was conducted to examine the effects of PEMF therapy on DOMS in elbow flexors at 24, 48, and 72 hours after the experimental DOMS induction. Thirty healthy volunteers ( yrs, cm, and kg) participated in this study. Each was randomly assigned to a PEMF or placebo group. On the first day, DOMS was induced in the elbow flexors by repeated isokinetic motions at low () and fast () speeds in all subjects. Thereafter, the PEMF group received 15-min daily treatment with a PEMF device. The placebo group received sham treatment of the same duration. Overall, PEMF application was more effective than the sham treatment in reducing the physiological symptoms associated with the DOMS including perceived soreness, median frequency, and electromechanical delay of the surface electromyography. In addition, median frequency and isokinetic peak torque of the PEMF group recovered to the pre-DOMS induction level earlier than the placebo group. In conclusion, this study suggests that PEMF can be applied as a new recovery strategy in reducing DOMS symptoms. Further experiments are required to examine the effect of the PEMF treatment on different types of exercise conditions and to determine the optimal treatment dosage and duration in a real clinical setting.
    Full-text · Article · May 2013
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    ABSTRACT: We evaluated whether group locomotor imagery training-combined knowledge of performance (KP) lead to improvements in gait function in community dwelling individuals with chronic stroke. Ten adults who had suffered a hemiparetic stroke at least 6 months earlier participated in group locomotor imagery training-combined KP for 5 weeks, twice per week, with 2 h intensive training. Dynamic gait index scores increased significantly after the group locomotor imagery training-combined KP. However, times for the timed up-and-go test did not improve significantly after the training. Group locomotor imagery training-combined KP may be a useful option for the relearning of gait performance for community dwelling individuals with chronic hemiparetic stroke.
    Full-text · Article · Feb 2013

Publication Stats

197 Citations
36.32 Total Impact Points

Institutions

  • 2008-2015
    • Yonsei University
      • • College of Health Sciences
      • • Department of Ergonomic Therapy
      Sŏul, Seoul, South Korea
  • 2010
    • Daejeon University
      • Department of Physical Therapy
      Daiden, Daejeon, South Korea