• Research in Community and Public Health Nursing
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• v.8 no.1
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• pp.31-44
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• 1997

The purpose of this study was to measure and determine the relationship of femoral neck and lumbar bone mineral density with their and related factors. It were measured and determined the relationships among bone mineral density, bone mineral content in the lumbar and femoral neck, muscle strength (arm, back, leg), muscle endurance, instrumental activity of daily living (IADL), quality of life, cognitive perceptual variables(self efficacy, perceived health status), age, age at menopausal period. The twenty five subjects participating in this study consisted of twelve males and thirteen females at a C-institution in Chung Buk province. The mean age of subjects was 73.64 years. The data was collected from August, 1993 to September, 1993. The data was analyzed with $x^2-test$, t-test, Correlation, multiple regression using a SPSS pc+ program. 1. The mean femoral neck bone mineral density was $0.636g/cm^2$, 66.7% of young bone mineral density, the mean lumbar($L_2-L_4$) bone mineral density was $0.807g/cm^2$, 79.86% of young bone mineral density. The mean fermoral neck bone mineral content was 2.906g and the mean lumbar bone mineral content was 36.898g. 2. The mean muscle strength was 17.14kg(grip strength), 32.05kg(back lift strength), 17.14kg (leg lift strength) and the mean muscle endurance was 9.92times. 3. Men showed a significantly higher score (p<0.01) in muscle strength and muscle endurance than women, as well as a significantly higher score on self efficacy and perceived health status(p<0.05). 4. The femur neck bone mineral density had a significant correlation(p<0.0l) with leg lift strength, back lift strength, and their was a significant correlations (p<0.05) with arm strength and muscle endurance. Lumbar ($L_2-L_2$) bone mineral density had a significant correlation(p<0.05) with muscle endurance, grip strength and IADL. 5. With the multiple regression analysis the most significant predictor for lumbar bone mineral density were IADL, the most significant predictor for femoral neck bone mineral density was leg strength. This study concluded: As the mean bone mineral density and bone mineral content were low, the aged showed osteopenia. Bone mineral density, muscle strength and IADL were correlated. The aged could pro mote muscle strength, bone mineral density and IADL through Leg Press exercise which was safe and efficient for the aged. This Leg Press exercise contributed to prevention of osteoporosis and promoted the health of the aged.

• Physical Therapy Korea
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• v.19 no.3
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• pp.105-114
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• 2012

This study was performed to compare the muscle activity of lumbar stabilizers between stoop and semi-squat lifting techniques at different lifting loads. Twenty healthy subjects (9 males, 11 females) were recruited for this study. Muscle activity of external obliques (EO), internal obliques (IO) and lumbar multifidus (LM) muscle was measured by surface electromyography during stoop and semi-squat lifting at different lifting loads (10%, 20%, and 30% of the subject's body weight). A one-way repeated measure ANOVA was applied. The results showed that EMG activity of EO was significantly increased with a load of 30% of body weight compared to 10% and 20% of body weight in both lifting techniques (p<.05). Muscle activity of LM was significantly increased in 20% compared to 10% and 30% compared to 10% of subject's body weight in stoop lifting and the muscle activity of LM was significantly increased in 20% compared to 10%, 30% compared to 20%, and 30% compared to 10% of the subject's body weight in semi-squat lifting (p<.05). However, there was no significant difference in activity of IO according to lifting loads in both lifting techniques. There were no significant differences in muscle activity of EO, IO, and LM between stoop and semi-squat technique (p>.05). Therefore, the results of this study suggested that the EO can contribute to increase the lumbar stability during stoop and semi-squat lifting at 30% of body weight rather than at lower loads, and the LM seems to act as counteractor to imposed loads during stoop and semi-squat lifting with increasing loads.

• The Journal of Korea CHUNA Manual Medicine
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• v.4 no.1
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• pp.119-127
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• 2003

Objective : We found out improvement at low back pain and lumber strength by isotonic lumbar extension training on lumbar strength and self low back exercise stretching program. Methods : We evaluated the symptom's changes VAS(Visual Analogue Scale) and lumbar strength by Medx which could estimate and exercise lumbar muscle. Conclusions: We can decrease low back pain by strengthening lumbar muscle, in additionally when patients are In admission state we may improve lumbar muscle more than Opd. state.

• The Journal of Churna Manual Medicine for Spine and Nerves
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• v.2 no.2
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• pp.69-78
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• 2007

Objectives : The purpose of this report is to examine the effects of acupuncture treating and chuna treating to A-Shi point of iliopsoas muscle on lumbar stenosis and leg length inequality. Methods : We investigated one patient suffering from lumbar stenosis, which came to Sung-Min Oriental Medicine Clinic from December 4, 2006 to March 3, 2007. And we operated acupuncture treating and chuna treating to A-Shi point of iliopsoas muscle. Results : That patient's subjective symptoms such as lumbago, right leg weakness and right leg numbness have improved. Conclusions : Acupuncture treating and chuna treating to A-Shi point of iliopsoas muscle were associated with improvement of lumbar stenosis and leg leng inequality.

• Physical Therapy Korea
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• v.18 no.3
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• pp.59-66
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• 2011

The purpose of this study is to examine the activity ratios of global trunk muscles and local trunk muscles in relation to adjustments in the level of task difficulty while performing stability exercises in easily applied bridging lumbar stabilization exercise. Twenty healthy subjects performed bridging lumbar stabilization exercise while the level of task difficulty was plate was used in the same posture for all the exercises. EMG was used to examine the activity ratios of the global muscles and multifidus in relation to the level of task difficulty. Moreover, the activity ratios of the multifidus muscle, the erector spinae and the gluteus maximus muscle were measured. A one-way ANOVA with repeated measures was used, and a Bonferroni correction was conducted (${\alpha}$=.05). When the bridging lumbar stabilization exercise were performed at different difficulty levels, the activity of the multifidus muscle, which is a local muscle, was high in all three exercises. Also, compared to low intensity and intermediate intensity exercises, high intensity exercises showed more significant differences (${\alpha}$=.05). Among all the muscles, the multifidus showed the highest activity at intermediate intensity. Based on these results, we suggest that in the case of bridging lumbar stabilization exercise, low intensity or intermediate intensity exercises are more suitable and efficient for local muscle stabilization.

• Journal of Korean Physical Therapy Science
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• v.26 no.1
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• pp.15-21
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• 2019

Background: The purpose of this study was to the effects of stretching on lumbar flexibility after lumbar and lower muscle strengthening exercise. Design: Randomized Controlled Trial. Methods: 24 subjects without back pain in their twenties were divided into 12 experimental groups and 12 control groups. The experimental group performed a stretching program after muscle strength exercise. In the control group, only muscle strength exercise was performed, and total exercise was performed 24 times a week for 8 weeks to compare and analyze before and after experiment. Results: The results of this study are as follows: 1) There was no statistically significant difference in both before and after weight of experimental group and control group. 2) There was no statistically significant difference in both before and after skeletal muscle levels of experimental group and control group. 3) There was no statistically significant difference in both before and after fat mass of experimental group and control group. 4) There was a statistically significant difference in both before and after trunk forward flexion of experimental group and control group. Conclusion: This research showed a positive affect on increasing flexibility, which is expected to have a great effect on improvement of flexibility in the future.

• The Korean Journal of Emergency Medical Services
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• v.24 no.3
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• pp.79-87
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• 2020

Purpose: This study sought to determine how the act of performing cardiopulmonary resuscitation (CPR) affects the rescuer's muscle tone, stiffness, and fatigue in the lumbar region. Methods: The research subjects were 30 healthy men in their twenties in possession of a Basic Life Support (BLS) provider certificate. In this study, the CPR rescuer's muscle tone and stiffness in the upper and lower lumbar regions were measured in the resting position, starting position, and position after 10 min. Their level of fatigue was measured before and after performing CPR. Results: Muscle tone and stiffness in the upper and lower lumbar regions of the research subjects significantly increased throughout the CPR process and lasted up to 10 min after the process (p<.001). The subjects' fatigue also significantly increased post-CPR (p<.001). Conclusion: This study suggests that performing CPR creates muscular and physiological stress, fatigue, and ultimately, lower back pain.

• Journal of Veterinary Science
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• v.22 no.1
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• pp.3.1-3.13
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• 2021

Background: Multifidus muscle stiffness decreases in patients with lumbar intervertebral disk herniation; however, age-related changes in humans have not been reported. Objectives: The reliability of ultrasound shear wave elastography in dogs, and changes in the shear elastic modulus of the thoracolumbar multifidus muscle with aging in dogs, were investigated. Methods: Twelve beagle dogs were divided into 2 groups based on the age of onset of intervertebral disk herniation: young (aged not exceeding 2 years; 1.3 ± 0.6 years old, n = 5) and adult (4.9 ± 1.2 years old, n = 7). The shear elastic modulus of the multifidus muscle, from the thirteenth thoracic spine to the fourth lumbar spine, was measured using ultrasound shear wave elastography. The length, cross-sectional area and muscle to fat ratio of the multifidus muscle, and the grade of intervertebral disk degeneration, were assessed using radiographic and magnetic resonance imaging examinations. Results: The length and cross-sectional area of the multifidus muscle increased caudally. In the young group, the shear elastic modulus of the multifidus muscle of the thirteenth thoracic spine was less than that of the third lumbar spine. In the adult group, the shear elastic modulus of the multifidus muscle of first and third lumbar spine was lower than that of the same site in the young group. Conclusions: Ultrasound can be used to measure shear wave elastography of the thoracolumbar multifidus in dogs. If the multifidus muscle stiffness decreases, we should consider age-related change.

• Physical Therapy Rehabilitation Science
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• v.11 no.2
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• pp.198-206
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• 2022

Objective: This study was to investigate the effect of a lumbar stabilization exercise program accompanied by proprioceptive stimulation in women in their 20s with low back pain. Design: A randomized controlled trial Methods: A total of 30 women in their 20s with low back pain were selected and randomly assigned to an experimental group and a control group. Both groups performed a lumbar stabilization exercise program, and only the experimental group applied for a stabilization exercise program with proprioceptive stimulation. The exercise program lasted 60 minutes at a time, 3 times a week, for 4 weeks. The measurement tools used were the Numeric Rating Scale (NRS), the Korean version of the Oswestry Disability Index (K-ODI), the lumbar alignment, and the transverse abdominis(TrA) muscle thickness and contraction ratio. Results: Both groups showed statistically significant differences in NRS, K-ODI, and muscle thickness before and after the experiment (p<0.05). The lumbar alignment and contraction ratio at the time of contraction of TrA in the experimental group was statistically significantly increased, and there was also a significant difference in the difference between the two groups (p<0.05). Conclusions: The lumbar stabilization exercise program with proprioceptive stimulation reduced pain, improved low back pain induced dysfunction, and increased TrA muscle thickness and contraction ratio. Therefore, it can be an effective therapeutic exercise program for women in their 20s with LBP.

• Journal of Korean Physical Therapy Science
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• v.10 no.2
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• pp.96-103
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• 2003

The purpose of this study was to assess the effect of applied pressure to abdomen on lumbar and abdominal muscle activation during upper limb exercise. The experimental group consisted of twenty-seven healthy male subjects (mean age=$22.40{\pm}2.19years$, mean height=$175.30{\pm}2.19cm$, mean weight= $67.67{\pm}7.44kg$, RM=$8.43{\pm}2.76kg$). In each different pressure condition (OmmHg, 30mmHg, 70mmHg, 100mmHg), upper limb exercise was performed in total of 10 trials with 10 RM dumb-bell exercise. Lumbar and abdominal muscle activity was measured using surface bipolar electrode electromyography(EMG). EMG activity was measured from upper rectus abdominis, external oblique abdominis, internal oblique abdominis, and elector spinae. The raw EMG signal was processed into the root mean square(RMS). All RMS EMG data were normalized and express as a percentage of the EMG(%EMG). Collected data were statistically analyzed by SPSS/PC Ver 10.0 using two-way analysis of variance for repeated measures($4{\pm}3$) and Bonferroni post hoc, test. Lumbar and abdominal muscle activation was significantly increased when 100 mmHg was applied(p<.05). Upper rectus abdominis activation was significantly increased compared as other muscles activation(p<.05). However, there were no interaction between pressure and muscles(p>.05). The findings of this study can be used as a fundamental data when lumbar orthosis is applied and external pressure can be used as a therapeutic tool.