• Physical Therapy Rehabilitation Science
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• 제12권3호
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• pp.300-309
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• 2023

Objective: The purpose of this study was to investigate the effects of gastrocnemius neuromuscular electrical stimulation training on ankle mobility and gait in patients with stroke. Design: A randomized controlled trial. Methods: 31 patients with stroke were selected and classified into an experimental group (n=16) and a control group (n=15). Both groups were assessed for ankle mobility using the Knee to Wall Test and gait parameters using G-walk before and after the intervention. The intervention was applied five times a week for four weeks. The experimental group performed gastrocnemius neuromuscular electrical stimulation followed by ankle control exercises, while the control group only applied NMES to the tibialis anterior muscle of the paretic side for 30 min per session five times a week for 4 weeks. Results: Experimental group showed significant improvements in Knee to wall test. and lumbar flexibility after the intervention. both group showed significant improvements in gait parameters after the intervention. However, when comparing between the two groups, the experimental group showed a more significant effect than the control group. Conclusions: Gastrocnemius neuromuscular electrical stimulation training can be considered an effective approach to improve ankle mobility and gait ability in patients with stroke.

• Clinics in Shoulder and Elbow
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• 제22권4호
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• pp.195-202
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• 2019

Background: This study investigates the effects of neuromuscular electrical stimulation (NMES) in preventing deltoid atrophy during the first 12 weeks after arthroscopic rotator cuff repair. Methods: Eighteen patients undergoing arthroscopic repair of a medium-sized rotator cuff tear by a single surgeon, were randomized into two groups: NMES and transcutaneous electrical nerve stimulation (TENS). Each group used the respective device for 6 weeks after surgery. Pain was measured at baseline, 6, and 12 weeks postoperatively, using the visual analogue scale (VAS); range of motion (ROM), abduction strength and functional scores were measured at baseline and 12 weeks postoperatively. Deltoid thickness and cross-sectional areas were measured using magnetic resonance imaging at 12 weeks postoperatively. Results: At 12 weeks post-surgery, no statistically significant difference was observed between the NMES and TENS groups in the pain VAS, the Disabilities of the Arm, Shoulder and Hand score, ROM, and abduction strength. Postoperative decrease in the thickness of the anterior, middle, and posterior deltoid, at the level just below the coracoid, was -2.5%, -0.7%, and -6.8%, respectively, in the NMES group, and -14.0%, -2.6%, and -8.2%, respectively, in the TENS group (p=0.016, p=0.677, and p=0.791, respectively). At the level of the inferior glenoid tubercle, postoperative decrease in area of the deltoid was -5.4% in the NMES group and -14.0% in the TENS group, which was significantly different (p=0.045). Conclusions: NMES has the potential for reducing deltoid atrophy after arthroscopic rotator cuff repair, suggesting that NMES might help minimize postoperative atrophy after various shoulder surgeries.

• Physical Therapy Rehabilitation Science
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• 제3권2호
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• pp.112-118
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• 2014

Objective: The purpose of this study was to investigate the effects of an exercise with and without neuromuscular electrical stimulation (NMES) of the quadriceps femoris muscle, on strength, pain, and weight distribution in patients with knee instability post surgery. Design: Randomized controlled trial. Methods: Twenty patients in the early stage of rehabilitation after knee surgery were recruited as subjects and were randomly divided into either experimental group (exercise combined with NMES) (n=10) or control group (n=10). Both groups received strength training of the lower limb for 20 min/day, 5 days/week for 4 weeks. The experimental group used NMES for unilateral quadriceps femoris training with incremental increases in the intensity of isometric contraction over 4 weeks. Outcome measurements were assessed using the digital manual muscle testing, 30-chair stand test (30CST), numeric pain rating scale (NPRS) and weight distribution using the foot analyzer before and after 4 weeks of training. Results: After the 4-week intervention, knee extensor strength increased significantly in the experimental group post intervention (p<0.05), and there was a significant improvement in the experimental group compared with the control group (p<0.05). The 30CST and NPRS scores improved significantly in the experimental group compared to the control group (p<0.05), and there was a significant difference between the two groups (p<0.05). Weight distribution was significantly improved in the experimental group compared with the control group, (p<0.05), but there was no significant difference in improvement between the two groups. Conclusions: This study showed that NMES combined with strengthening exercises of the lower limbs is effective in improving lower limb pain and strength in patients with instability after knee surgery.

• 대한물리의학회지
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• 제14권3호
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• pp.81-89
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• 2019

PURPOSE: To solve the problems of chronic obstructive pulmonary disease (COPD) patients complaining of muscle fatigue and having limited motor abilities, this study provided the clinical basic data for pulmonary rehabilitation by examining the effects of High Low-Frequency Neuromuscular Electrical Stimulation (NMES) on the respiratory muscle strength, quadriceps muscle activity, and life quality. METHODS: Samples were collected from 20 COPD patients and placed randomly in a low-frequency group (n=10) and high-frequency group (n=10). For a pretest, the respiratory muscle strength (MIP, MEP), quadriceps muscle activity (LF, VM, VL), and life quality (SGRQ) were measured. After applying NMES to each group for 30 minutes at a time, five times a week, for four weeks, a posttest was conducted in the same way as the pretest. RESULTS: Both groups showed significant differences in the respiratory muscle strength, quadriceps muscle activity, and quality of life within the groups and there were significant differences in the quadriceps muscle activity between the groups. CONCLUSION: The four-weeks NMES positively influenced the respiratory muscle strength and life quality by enhancing the function of the quadriceps and exercise tolerance. In particular, high-frequency(75 Hz) NMES was more effective than low-frequency (15 Hz) NMES. This result can be an alternative means to improve the physical functions of COPD patients clinically in the future.

• 대한지역사회작업치료학회지
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• 제5권1호
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• pp.23-34
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• 2015

목적 : 신경근 전기자극치료와 함께 적용된 자가 삼킴 운동이 삼킴 장애 환자의 삼킴 기능 향상에 미치는 효과를 알아보고자 하였다. 연구방법 : 2013년 5월부터 2015년 4월까지 서울 소재 A 종합병원에서 삼킴 장애로 진단받아 삼킴 재활치료가 의뢰된 입원 환자들을 대조군과 실험군으로 나누었다. 두 군 모두 VitalStim을 이용해 신경근 전기자극치료를 받는 60분 동안 30분간 삼킴 재활치료를 받았고, 실험군은 추가적으로 남는 30분간 자가 삼킴 운동 프로그램을 시행하였다. 중재는 3주간 주 5회 진행되었다. 의무기록 열람을 통해 대상자들의 일반적 정보를 조사하였고, 중재 전후 삼킴 기능의 변화를 알아보기 위해 비디오 투시 삼킴 장애 검사와 침습-흡인 척도를 시행하였다. 결과 : 중재 전 두 군의 삼킴 기능에 유의한 차이가 없었다. 중재 전후 대조군은 비디오 투시 삼킴 장애 척도 총점, 조롱박오목의 잔여물과 흡인에서 유의한 차이를 보였고, 실험군은 비디오 투시 삼킴 장애 척도 총점, 후두개계곡의 잔여물, 조롱박오목의 잔여물에서 유의한 차이를 보였다(p<.05). 중재 전후 대조군과 실험군의 삼킴 기능 차이를 비교한 결과 유의한 차이가 없었다. 결론 : 신경근 전기자극치료와 함께 적용된 삼킴 재활치료 또는 삼킴 재활치료와 자가 삼킴 운동이 삼킴 장애 환자의 인후두 기능 향상에 유의한 영향을 미침을 알 수 있었으나 추가적으로 적용된 자가 삼킴 운동이 유의한 변수로 작용하지 않음을 알 수 있었다.

• The Journal of Korean Physical Therapy
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• 제30권4호
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• pp.129-134
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• 2018

Purpose: This study aims to investigate the changes in pulmonary function, gait ability, and quality of life when NMES is applied along with CBE and to provide basic clinical data to be used in pulmonary rehabilitation guidelines for patients with COPD to treat patients with severe COPD. Methods: For this study, CBE and NMES of quadriceps femoris on both sides were applied to the experimental group (n=10), and only CBE was applied to the control group (n=10). For a pre-test, a 6-minute walk test was performed, and pulmonary function and health-related quality of life were measured. Moreover, an exercise program was applied to each group for 30 minutes per session, 5 times a week, for 6 weeks. After that, a post-test was conducted the same way as the pre-test. Results: In the within-group comparison, there were significant differences in forced expiratory volume in one second, 6-minute walk test and health-related quality of life between the experimental group and the control group (p<0.01)(p<0.05). In the between-group comparison, the experimental group showed an increase in forced expiratory volume in one second and 6-minute walk test (p<0.05) and showed a decline in health-related quality of life (p<0.05). Conclusion: The 6-weeks NMES program improved health-related quality in patients with severe COPD by increasing expiratory volume by reinforcing the function of quadriceps femoris. This finding implies that NMES could be an alternative mode for improving physical functions of patients with severe COPD, who cannot participate in a breathing exercise program or are reluctant to participate.

• The Journal of Korean Physical Therapy
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• 제35권5호
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• pp.145-150
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• 2023

Purpose: This study examined the effects of ankle control training using neuromuscular electrical stimulation (NMES), leg muscle activation, and balance in stroke patients. Methods: Thirty-one stroke patients diagnosed with cerebral infarction and cerebral hemorrhage were selected for the study. The experimental group underwent ankle control training using NMES, while the control group applied NMES to the paretic tibialis anterior muscle for 30 minutes per session, five times a week for four weeks. The muscle activity changes were measured using surface electromyography, and balance parameters were evaluated using a functional reach test (FRT). Results: The intra-group comparison of the concentric muscle activity revealed improvements in the experimental group, including paretic tibialis anterior (TA) muscle (p<0.05), medial gastrocnemius muscle (MG) (p<0.01), and lateral gastrocnemius muscle (LG) (p<0.05), as well as MG (p<0.05), LG (p<0.05), soleus muscle (p<0.05) of the non-paretic side, and soleus muscle symmetry index (p<0.05). The intra-group comparison of the eccentric muscle activity showed improvements in the experimental group, including MG (p<0.01) and LG (p<0.01) of the paretic side, as well as MG (p<0.01), LG (p<0.01) of the non-paretic side, and LG symmetry index (p<0.01). The intra-group comparison of the functional reach test revealed significant differences in the test results in the experimental and control groups (p<0.05). Conclusion: Ankle control training using NMES had a positive effect on the changes in muscle activation and improved balance in patients with stroke.

• 한국산학기술학회논문지
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• 제18권6호
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• pp.538-546
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• 2017

본 연구는 앞십자인대 재건술 환자에게 신경근전기자극 및 경피신경전기자극을 적용하여 근력과 통증, 관절가동범위 및 공포-회피반응에 미치는 효과를 알아보고자 한 연구이다. 앞십자인대 완전파열로 인해 관절경재건술을 받은자를 대상으로 신경근전기자극군(n=14), 경피신경전기자극군(n=14)으로 나누었고 각 군은 일반적인 물리치료를 받은 후 각 중재를 적용받았다. 각 전기치료 중재는 1일 1회 30분, 주 3회씩 4주간, 총 12회 규칙적으로 적용하였다. 중재방법에 따른 평가에는 무릎관절의 굽힘과 폄시 등속성 근력, 통증, 무릎관절 가동범위, 공포-회피반응이 포함되었다. 연구결과 신경근전기자극군과 경피신경전기자극군 모두에서 통증, 관절가동범위, 공포-회피반응에서 유의한 개선이 있었다. 하지만 등속성 무릎 굽힘 및 폄근력의 경우 신경근전기자극군에서만 유의한 개선이 있었다. 또한, 신경근전기자극과 경피신경전기자극 두 전기치료 방법간, 근력, 통증, 관절가동범위, 공포-회피반응에선 유의한 차이가 없었다. 본 연구를 통해 신경근전기자극과 경피신경전기자극은 앞십자인대 재건술 환자의 통증, 관절가동범위, 공포-회피반응에 효과적인 중재방법이 될 수 있다는 것을 알 수 있었지만 넙다리네갈래근 근력을 개선시키기 위해서는 신경근전기자극이 더욱 효과적일 수 있다는 것을 알 수 있었다.

• 한국정밀공학회:학술대회논문집
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• 한국정밀공학회 2013년도 춘계학술대회 논문집
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• pp.1471-1472
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• 2013

• Physical Therapy Rehabilitation Science
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• 제6권3호
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• pp.127-133
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• 2017

Objective: The purpose of this study was to explore the effect of repetitive wrist extension task training with electromyography (EMG)-triggered neuromuscular electrical stimulation (NMES) for wrist extensor muscle recovery in patients with stroke. Design: Randomized controlled trial. Methods: Fifteen subjects who had suffered a stroke were randomly assigned to an EMG-triggered NMES group (n=8) or control group (n=7); subjects in both groups received conventional therapy as usual. Subjects in the experimental group received application of EMG-triggered NMES to the wrist extensor muscles for 20 minutes, twice per day, five days per week, for a period of four weeks, and were given a task to make a touch alarm go off by activity involving extension of their wrist. In the control group, subjects performed wrist self-exercises for the same duration and frequency as those in the experimental group. Outcome measures included muscle reaction time and spectrum analysis. Assessments were performed during the pre- and post-treatment periods. Results: In the EMG-triggered NMES group, faster muscle reaction time was observed, and median frequency also showed improvement, from 68.2 to 75.3 Hz, after training (p<0.05). Muscle reaction time was significantly faster, and median frequency was significantly higher in the experimental group than in the experimental group after training. Conclusions: EMG-triggered NMES is beneficial for patients with hemiparetic stroke in recovery of upper extremity function.