• 대한통합의학회지
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• 제4권1호
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• pp.85-97
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• 2016

Purpose : The purpose of this study was to investigate the effects on the muscle thickness and contraction time using sound wave vibrator and swiss ball. Methods : This study was performed on 20 subjects. 20 subjects were divided into two groups; Lumbar stability exercise using sound wave vibrator exercise(n=10)(Group1), Lumbar stability exercise using Swiss ball exercise(n=10)(Group2). Both of the group performed the exercise 3 times a week for 5 weeks. The data was analyzed by the paired t-test to compare before and after difference of factors on each group and the Independent t-test to compare the between groups. Results : Both group were increased muscle contracture time on Straight Leg Rise(SLR) test (p<0.05). It means both group were increased lumbar stability. However, by comparing the between groups, there were no statistically significant difference about muscle thickness of multifidus and transverse abdominal.(p>0.05). Conclusion : As a result of this study, we suggest that the sound wave vibrator may be effective exercise tool for lumbar stability exercise like a swiss ball.

• 정형스포츠물리치료학회지
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• 제14권2호
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• pp.127-133
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• 2018

Purpose: This study investigated the effects of changing the tilt angle of the exercise bed on physiological characteristics of trapezius, multifidus, and hamstring muscle function. Methods: Twenty elderly who complains of back and lumbar pain or discomfort participated in this study (average age: $64.70{\pm}4.55$ years). The physiological characteristics, including muscle tone (F), dynamic stiffness (S), and elasticity (D) of trapezius, multifidus, and hamstring muscles were measured by a Myoton device at three tilt angles (0, 15, and 30 degrees) during exercise. Results: The muscle tone, dynamic stiffness, and elasticity of the right trapezius and left hamstring muscle showed significant differences (p<0.05) according to exercise bed tilt angle, while the other muscles showed no significant differences. Conclusions: Our results demonstrate that physiological characteristics of the upper and lower extremity muscles are affected ipsilaterally, according to the tilt angles of the exercise bed.

• 대한의용생체공학회:의공학회지
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• 제43권3호
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• pp.177-184
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• 2022

The purpose of this study was to present the IMU sensor based trunk stabilization exercise and to evaluate the changes in the muscle activity and thickness with non-specific low back pain patients (N=30). They were classified into two groups; lumbar stabilization exercise using IMU sensor (ILS), (n₁=20) and general lumbar stabilization exercise (GLS), (n₂=10). By comparing the difference between pre and post intervention via trunk muscle activity and muscle thickness, the significant differences were identified. Muscle activity was measured on external oblique (EO), internal oblique (IO), and multifidus (MF) by using surface electromyography (sEMG). Muslce thickness was measured on external oblique, internal oblique, transverse abdominis (TrA), and multifidus (MF) by using ultrasonography. sEMG activity was recorded at right side-bridge position. Each group performed the proposed lumbar stabilization exercise for 30 minutes a day, 5 times a week for 4 weeks. Trunk muscle activity was observed with a significant increase in the IO of ILS (p<.05) and a decrease in the MF of GLS (p<.05). Trunk muscle thickness was significantly increased in left EO and both IO of GLS (p<.05), and also significant increased right EO, both IO, both TrA, and both MF of the ILS (p<.05). In the future, a convergence approach of rehabilitation and engineering is needed to select a sensor suitable for rehabilitation purposes, study the validity and reliability of data, and produce appropriate rehabilitation contents.

• 한국산학기술학회논문지
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• 제16권3호
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• pp.1957-1963
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• 2015

본 연구의 목적은 불안정 지지면에서의 동적 안정화 운동이 배가로근과 뭇갈래근의 두께와 밀도 및 백색영역지수(white area index, WAI)에 미치는 영향을 연구하였다. 연구대상은 20대 성인 27명이며 세 그룹으로 나누어 각기 다른 면에서 동적 안정화 운동을 6주 동안 실시하여 실험 전 후에 배가로근과 뭇갈래근의 두께와 근육 밀도, 백색영역지수를 측정하였다. 그 결과 세 그룹 간 의미있는 차이를 보였다(p<.05). 반복측정분산분석(repeated ANOVA) 결과, 배가로근과 뭇갈래근의 두께가 시기별 차이에서 그룹 간 의미있는 차이를 보였으며(p<.05), 뭇갈래근의 근육 밀도와 백색영역지수의 그룹 간 비교결과 의미있는 차이를 보였다(p<.05). 결론적으로 불안정 지지면에서 허리부 안정화 운동의 효과에 의미있는 차이가 있었고 이 같은 결과는 허리안정화 운동에 대한 추후 연구에 기초 자료로 활용 가능할 것으로 보인다.

• 한국콘텐츠학회논문지
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• 제12권3호
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• pp.233-243
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• 2012

본 연구는 만성요통환자에서 PNF 기법을 이용한 요부안정화 운동이 요부 심부근의 두께 변화와 기능적 활동에 미치는 효과를 알아보고자 하였다. 연구대상은 만성 요통환자 30명을 대상으로 하였으며, 실험군을 세군으로 10명씩 무작위 할당하였다; 실험군I은 일반물리치료군(n=10), 실험군II는 일반 요부안정화운동군(n=10), 실험군III은 PNF 기법을 이용한 요부안정화운동군(n=10)으로 나누었다. VAS를 사용하여 통증 변화를 측정하였고, 초음파 장비를 사용하여 4주간의 각 운동에 따른 요부 심부근들(복횡근, 외복사근, 다열근)의 근 두께 변화를 알아보았고, ODQ, RMDQ를 사용하여 기능적 활동 수준 변화를 알아보았다. 그 결과, 실험 전 후에 실험군II와 실험군III의 비교에서 VAS와 근 두께의 변화에 유의한 차이를 보였으며, 각 실험군 간의 유의성 검정 결과, 실험군III에서 다른 군들에 비해 유의한 차이를 나타냈다. ODQ, RMDQ 검사 결과에서는 실험 전 후에 실험군II와 실험군III의 비교에서 유의한 차이를 보였으며, 각 실험군 간의 유의성 검정 결과, 실험군III에서 다른 군들에 비해 유의한 차이를 나타냈다. 이상의 결과로 보아, PNF 기법을 이용한 요부 안정화운동은 일반 요부안정화운동에 비해 통증경감 및 요부에 위치한 심부근들의 두께 향상에 더 효과적임을 알 수 있었으며, 이러한 결과는 기능적 활동수준에도 긍정적인 영향을 미치는 것을 확인할 수 있었다.

• Annals of Rehabilitation Medicine
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• 제42권6호
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• pp.804-813
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• 2018

Objective To elucidate the effect of a 12-week horizontal vibration exercise (HVE) in chronic low back pain (CLBP) patients as compared to vertical vibration exercise (VVE). Methods Twenty-eight CLBP patients were randomly assigned to either the HVE or VVE group. All participants performed the exercise for 30 minutes each day, three times a week, for a total of 12 weeks. Altered pain and functional ability were evaluated using the visual analog scale (VAS) and Oswestry Disability Index (ODI), respectively. Changes in lumbar muscle strength, transverse abdominis (TrA) and multifidus muscle thicknesses, and standing balance were measured using an isokinetic dynamometer, ultrasonography, and balance parameters, respectively. These assessments were evaluated prior to treatment, 6 weeks and 12 weeks after the first treatment, and 4 weeks after the end of treatment (that is, 16 weeks after the first treatment). Results According to the repeated-measures analysis of variance, there were significant improvements with time on VAS, ODI, standing balance score, lumbar flexor, and extensor muscle strength (all p<0.001 in both groups) without any significant changes in TrA (p=0.153 in HVE, p=0.561 in VVE group) or multifidus (p=0.737 in HVE, p=0.380 in VVE group) muscle thickness. Further, there were no significant differences between groups according to time in any of the assessments. No adverse events were noticed during treatment in either group. Conclusion HVE is as effective as VVE in reducing pain, strengthening the lumbar muscle, and improving the balance and functional abilities of CLBP patients. Vibrational exercise increases muscle strength without inducing muscle hypertrophy.

• Journal of Korean Neurosurgical Society
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• 제59권3호
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• pp.276-281
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• 2016

Objective : Although trunk muscles in the lumbar spine preserve spinal stability and motility, little is known about the relationship between trunk muscles and spinal fusion rate. The aim of the present study is to evaluate the correlation between trunk muscles cross sectional area (MCSA) and fusion rate after posterior lumbar interbody fusion (PLIF) using stand-alone cages. Methods : A total of 89 adult patients with degenerative lumbar disease who were performed PLIF using stand-alone cages at L4-5 were included in this study. The cross-sectional area of the psoas major (PS), erector spinae (ES), and multifidus (MF) muscles were quantitatively evaluated by preoperative lumbar magnetic resonance imaging at the L3-4, L4-5, and L5-S1 segments, and bone union was evaluated by dynamic lumbar X-rays. Results : Of the 89 patients, 68 had bone union and 21 did not. The MCSAs at all segments in both groups were significantly different (p<0.05) for the PS muscle, those at L3-4 and L4-5 segments between groups were significantly different (p=0.048, 0.021) for the ES and MF muscles. In the multivariate analysis, differences in the PS MCSA at the L4-5 and L5-S1 segments remained significant (p=0.048, 0.043 and odds ratio=1.098, 1.169). In comparison analysis between male and female patients, most MCSAs of male patients were larger than female's. Fusion rates of male patients (80.7%) were higher than female's (68.8%), too. Conclusion : For PLIF surgery, PS muscle function appears to be an important factor for bone union and preventing back muscle injury is essential for better fusion rate.

• Nuclear Medicine and Molecular Imaging
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• 제42권3호
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• pp.249-252
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• 2008

• The Journal of Korean Physical Therapy
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• 제24권6호
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• pp.393-397
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• 2012

Purpose: We investigated to identify the effect of robo-horseback riding exercise (RHRE) on trunk muscle activity ratios for patients with low back pain. Methods: Twelve patients with low back pain and twelve healthy adults were recruited for this study. Subjects performed the RHRE with the neutral spine position. The amplitude of electromyography activity was recorded from the selected trunk muscles (internal oblique [IO], rectus abdominis [RA], multifidus [MF], the thoracic part of the iliocostalis lumborum [ICLT]). The ratios of the relative local muscle activity to the global muscle activity in abdominal and lumbar parts were calculated. Results: There were significant differences in the change values of the IO/RA and the MF/ICLT between low back pain (LBP) patients and healthy adults. The IO/RA ratio and the MF/ICLT ratio showed significant increase in LBP patients after training. Conclusion: The RHRE improved the trunk muscle activity ratio in patients with low back pain. The information presented here is important for investigators who use lumbar stabilization exercises as a rehabilitation exercise.

• 한국산업보건학회지
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• 제29권2호
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• pp.236-250
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• 2019

Objectives: The purpose of this study was to investigate the effect of intensive rehabilitation programs on pain, range of motion (ROM), lumbar muscle strength, core muscle endurance, disability, and depression in patients with traumatic low back injuries and to compare the efficacy of this therapy with that of conventional rehabilitation therapy. Methods: The study was performed with a retrospective medical chart review of patients with traumatic low back injury referred to the rehabilitation center at the Daegu Hospital of the Korean Workers Compensation and Welfare Service. Forty-four patients were allocated to either the conventional rehabilitation group (CRG; n = 22) or the intensive rehabilitation group (IRG; n = 22). The CRG group patients, who received 30-min therapist-supervised physical therapy and modality therapy five times per week for four weeks, were compared with the IRG group patients, who received 60-min therapist-supervised physical therapy, 30-min therapist-patient 1:1 matching rehabilitation therapy, and modality therapy five times per week for four weeks. Outcome measures were a numerical rating scale, ROM, lumbar muscle strength, lumbar core muscle endurance, thickness of lumbar deep focal core muscle (transverse abdominis and lumbar multifidus), Oswestry disability index (ODI), and depression (Korean version patient health questionnaire-9). Results: There were statistically significant improvements after treatment in all outcome measures in both groups (p < 0.05). In the intergroup comparison, NRS scores on the activity and thickness of lumbar deep focal core muscles increased significantly more in the IRG than in the CRG (p < 0.05). There were no statistically significant intergroup differences in NRS scores on resting, ROM except left lateral bending, lumbar muscle strength, core muscle endurance, ODI, and depression. Conclusions: We could confirm the superior effectiveness of an intensive rehabilitation program compared to conventional rehabilitation therapy in patients with traumatic low back injuries.