• 한국운동역학회지
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• 제22권3호
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• pp.341-348
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• 2012

The purpose of this study was to compare the muscle activities of the thoracic extensor(TE) and lumbar extensor(LE) during trunk lift (TL) exercise according to exercise position. Seventeen healthy subjects with no medial history of back pain were recruited for this study. Subjects performed the TL exercise in prone, quadruped and heel-sitting positions. The activities of the TE and LE were measured using surface electromyography during TL exercise in each exercise position. A one-way repeated-measures analysis of variance (ANOVA) was used to compare the normalized muscle activities of the TE and LE and the TE/LE ratio. The results showed that there was not significant effect of exercise position on the muscle activities of TE(p>.05). However, there was significant effect of exercise position on the muscle activities of LE and the TE/LE ratio(p>.05). Post hoc pair-wise comparisons with Bonferroni correction showed that both muscle activities of LE and TE/LE ratio in prone position were significantly different in those in heel-sitting and quadruped positions, during TL exercise, respectively. The TE/LE ratio was the greatest for TL exercise in heel-sitting position. Therefore, for selective activation of the TE muscle, we recommend performing the TL exercise in heel-sitting or quadruped position.

• 한국정밀공학회:학술대회논문집
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• 한국정밀공학회 2011년도 춘계학술대회 논문집
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• pp.947-948
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• 2011

• 척추신경추나의학회지
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• 제5권2호
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• pp.159-168
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• 2010

Objectives : The object of this study is to report a clinical effect of oriental medical treatments lot chronic muscle weakness caused by herniated intervertbral lumbar disc. Methods : The patient was diagnosed as lumbar disc herniation, and was treated by conservative treatments including acupunture, herbal mixture, pharmacopuncture. And we measured Visual Analog Score(VAS), Walking time and Manual Muscle testing(MMT). Results : After treatments, Visual Analog Score, Walking time and Manual Muscle testing(MMT) were improved in case. Conclusions : Chronic Muscle weakness caused by lumbar disc herniation can be improved by conservative maneuver as to oriental medical method.

• 대한통합의학회지
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• 제3권2호
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• pp.47-54
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• 2015

Purpose: This study was to investigate the effects of lumbar stabilization exercise and lower extremity strengthening program on pain, lower extremity muscle in patients with chronic low back pain. Method: The subject were randomly divided two groups. 15 people who were conducted lower extremity exercises and lumbar stabilization exercises called the combined exercise group and other(15 people) who were only conducted lower extremity exercise group. The assessment tools were the pain level and the led muscle power. Exercise was conducted for eight weeks. Result: Pain of the combined exercise group showed significant differences in the change in pain level(p<.05). The leg muscle power showed significant differences within group which hip flexor, extensor muscles and abductor muscles. there were significant differences within combined exercise group (p<.05). But the knee joint in each group showed a significant difference within group (p<.05). Conclusion: This study suggest that the lumbar stabilization exercises and lower extremity exercises showed more efficient results in the pain levels and leg muscles power than only the lower extremity exercise for patients with lumbar instability.

• 국제물리치료학회지
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• 제11권2호
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• pp.2090-2095
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• 2020

Background: Spinal Mobilization is one of the manual therapy technique that clinicians have used to treat pain, however, there is still a lack of research on changes in strength in healthy people. Objectives: To investigate the effect of posterior-anterior lumbar mobilization on lower limb strength in healthy individuals. Design: Two-group pretest-posttest design. Methods: In this study, 23 healthy subjects aged 20 years were assigned to 12 lumbar mobilization group (LMG) and 12 sham group (SG) to perform intervention and measurement through pre- and post-design. Intervention was performed in LMG with grade III~IV on L3-5 of the lumbar spine, and lumbar mobilization was performed for each segment. After intervention, knee flexion and extension strength were measured. To measure the main effect on muscle strength, a comparative analysis was conducted using paired t-test and independent t-test. Results: In LMG, knee flexor and extensor strength were increased significantly at 60°/s (P<.05). In addition, the extensors of LMG and SG were significantly different only at 60°/s, and the flexors were significantly different between groups at both 60°/s and 180°/s (P<.05). Conclusion: In healthy individuals, lumbar mobilization results in improvement of strength of knee flexor and extensor, and additional experiments on the effect of mobilization on the lumbar spine on functional changes in the lower limbs will be needed.

• 기본간호학회지
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• 제10권1호
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• pp.30-36
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• 2003

Purpose: The strength of hand grip, low back muscles and knee joint muscles were measured and then compared to the bone mineral density (BMD) of each forearm bones (including ulna and radius), lumbar spine, and femur in young women in order to identify the relationship between muscle strength and bone mineral density. Method: The BMD was measured with a Dual Energy X-ray Absorptiometry and muscle strength was measured with a handgrip dynamometer and a Cybex Norm. Data were analyzed with frequencies, percentages, means, and Pearson correlation coefficients. Result: 1) Higher grip strength correlated positively with higher BMD in the forearm (r=.246, p=.007), higher low back extensor strength with higher BMD in the femur (neck, trochanter and Ward's triangle)($r=.323{\sim}.226$, $p=.003{\sim}.043$) and higher strength in the knee joint extensor with higher BMD in the lumbar spine (r=.227, p=.041), femur neck, and femur trochanter significantly ($r=.295{\sim}.226$, $p=.007{\sim}.043$). There was no significant correlation between the strength of low back extensors and BMD in the lumbar spine, now with strength of knee joint flexor and the BMD in the femur. 2) The muscle strength of each part of the body had significant positive correlations to each other part ($r=.255{\sim}.728$ $p=.021{\sim}.000$) Conclusion: The results of this study showed that with the development of a muscle there was an increased BMD of the corresponding part, and the BMD of each part was influenced by adjacent muscles. To promote the health of bones, it is important to strengthen the muscles of related bones, based on balanced development of all muscles.

• 시큐리티연구
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• 제24호
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• pp.33-51
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• 2010

본 연구의 목적은 민간경호원의 규칙적인 척추안정화 운동프로그램 적용 유 무에 따른 근기능 및 보행능력의 변화를 분석하는 것으로 다음과 같은 결론을 얻었다. 첫째, 척추안정화 운동프로그램과 관련된 근기능의 변화에 있어서 최대 요부신전근력 및 요부굴곡근력의 경우 운동그룹에서는 처치 전 후 요부신전근력과 요부굴곡근력 모두 증가되었고 비운동그룹에서도 처치 전 후 요부신전근력과 요부굴곡근력이 증가하는 것으로 나타났다. 그리고 처치전에는 두그룹간 차이가 없었으나, 처치후에는 운동그룹과 비운동그룹이 차이가 있는 것으로 나타났으며, 통계적으로도 유의한 차이가 나타났다. 둘째, 척추안정화 운동프로그램과 관련된 근기능의 변화에 있어서 요부 굴곡 신전근 비율의 경우 운동그룹과 비운동그룹 모두 처치 전에는 요부 신전근의 기능적 소실을 나타냈으나, 처치 후 운동그룹은 정상적으로 회복되었고, 비운동그룹은 요부 신전근의 기능적 소실을 나타내었으며, 통계적으로도 유의한 차이가 나타났다. 셋째, 척추안정화 운동프로그램과 관련된 근기능의 변화에 있어서 요부안정화근력의 변화에 있어서 총 8가지 방향으로 요부안정화근력을 분석하였으며, 운동그룹에서는 각도별로 요부 안정화근력이 증가하였고 비운동그룹에서는 각도별로 요부안정화근력이 감소하거나 변화가 없었으며, 통계적으로 유의한 차이가 나타났다. 넷째, 척추안정화 운동프로그램과 관련된 보행능력의 변화에 있어서 10m 보행검사를 이용하여 최대 보행시 속도와 보폭에 대하여 분석하였으며, 척추안정화 운동프로그램 적용 유 무에 따른 운동그룹에서 비운동그룹 보다 보행능력을 증가시키는 것으로 나타났으며, 통계적으로도 유의한 차이가 나타났다. 결론적으로 민간경호원에게 규칙적인 척추안정화 운동프로그램 적용은 요부신전근력, 요부 굴곡근력, 요부 굴곡 및 신전근 비율, 요부안정화근력, 보행능력 등에서 긍정적인 효과가 있는 것으로 나타났다. 이러한 결과는 척추안정화 운동프로그램이 민간경호원들의 요통의 완화 및 근력향상에 긍정적인 효과가 있으며, 환자들의 빠른 회복으로 보다 빠르게 사회로의 복귀를 도와줄 수 있을 것이다. 또한 경호원들을 대상으로 예방적인 또는 기능을 향상시키기 위한 운동처방 프로그램으로 활용가능하다고 생각한다.

• The Journal of Korean Physical Therapy
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• 제25권1호
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• pp.16-22
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• 2013

Purpose: This study evaluated the validity of measuring paravertebral muscle function with 3D-NEWTON (Hanmed, Korea) by assessing the correlation between Biodex (Biodex, USA) and surface electromyography (EMG). Methods: Nineteen healthy adults participated. The function of their paravertebral muscle was measured in three ways. Maximum endurance time was measured in seconds when 3D-NEWTON was inclined forward for assessing extensor function, and inclined backward for assessing flexor function. Using surface EMG, maximum muscle activity was obtained from the eractor spinae and rectus abdominis during the 3D-NEWTON measurement. Maximum muscle activity was the mean activity from 10 seconds when the root mean squared firing data was highest. Through Biodex the peak torques of the extensor and flexor were measured during isometric exercises. The Spearman correlation coefficiencts from 3D-NEWTON, surface EMG, and Biodex were calculated. Results: The data from surface EMG and Biodex were statistically correlated when measured for flexor function, but less so for extensor function. In the case of 3D-NEWTON, the correlation coefficient with Biodex was 0.50 (p=0.05), while the coefficient with surface EMG was 0.53 (p=0.02) when measured for extensor function. Similarly, the correlation coefficienct with Biodex was 0.60 (p=0.01), while the surface EMG was 0.51 (p=0.03) for flexor function. Conclusion: 3D-NEWTON was a useful method for measuring paravertebral muscle function and can give helpful information for treating people with diseases associated with the lumbar spine.

• 시큐리티연구
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• 제21호
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• pp.1-18
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• 2009

인간의 요추는 똑바로 선 자세에서 골반 위에 있는 근육과 인대들에 의해 고정되어 있다. 인간이 움직일 때 마다 중심을 잡아주고, 근 골격계 구조를 적절히 유지시키는 요추부근육들을 효과적으로 스트레칭하고, 강화하여 노화로 인한 '건강의 약화'에서 벗어날 수 있다고 주장하였다. 이와 같은 요부안정화근육 강화는 요추부 재활과 운동 수행능력까지도 증가시킨다. 이 연구는 척추 강화 운동 요추 안정화 운동을 요추부의 근력, 유연성 및 균형, 요추 기능에 (코어프로그램)의 효과를 조사했다. 이 연구의 대상은 민간 경비 회사에 등록된 18명을 선정했다. 각 운동 그룹(n=9)은 무작위로 무선 표집하여 선정됐다. 이 연구의 방법으로 요추부 근력 측정 장비 BTE, 눈금자 줄자, 유연성, 균형과 요추 기능을 사용하였고 이에 따른 결과는 아래에 요약하였다. 굴곡근력 요추 안정화 운동 (핵심 운동) 단체(p<.05)을 개선했다. 신근 근육 강도가 요추 안정화 운동 (코어 프로그램) 그룹(p<.05)을 개선했다. 요추부 유연성 강화 운동 그룹과 요추 안정화 운동 그룹 (p<.05)을 개선했다. 척추의 균형 능력을 강화하는 그룹과 요추 안정화 운동 그룹 (코어 프로그램) 그룹에서 개선되었다(p<.05). 위의 결과에 따른 이 연구에서는 각 개인 경비 및 보안에 척추 강화 운동 요추 안정화 운동의 효과를 보여주어 지속적인 코어프로그램의 활성 방안을 고려해보아야 겠다.

• 대한물리의학회지
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• 제6권3호
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• pp.267-275
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• 2011

Objective : This study aims to examine how lumbar stabilization exercise and resistive exercise affect lumbar and lower extremity muscular strength of the aged. Method : Randomly selected 15 female senior citizens aged 65 or older at S, Y, and J senior citizens' center located in D city who meet the requirements for the study were divided into a resistive exercise group of 7 and a stabilization exercise group of 8 for which 60-minute-exercise sessions were administered three times a week for 12 weeks. Measuring lumbar and lower extremity muscular strength was measured six weeks and 12 weeks after exercise, respectively. Results : First, both resistive exercises and stabilization exercises are effective to improve lumbar muscular strength. Second, resistive exercise is effective to improve flexural muscle strength as well as lower extremity muscular strength, and stabilization exercise is effective for both flexion and extensor muscle strength. Conclusion : The 12 week lumbar stabilization exercise program appeared to be effective to improve lumbar and lower extremity muscular strength of the aged. This indicates that applying this program to identify and prevent frequent risk factors of falling can lead to the prevention of secondary problem factors of falling accidents.