• The Journal of Korean Physical Therapy
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• v.16 no.1
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• pp.14-31
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• 2004

The Purpose of this study was to investigate the change of lumbar extensor strength according to lumbosacral angle on chronic lumbar back pain patients. For this investigation lumbar extensor strength was administered to 60 patients who were diagnosed chronic lumbar back pain The subjects was to investigate lumbosacral angle in standing position and it were calculated lumbar extensor strength by using Medex. The result of this study summarized are as follows ; 1. Total experimental group exhibited significantly higher difference than control group in lumbar extensor strength among all degree lumbosacral angle. 2. In the relationship between experimental group and control group in lumbar extensor strength among lumbosacral angle, all degree difference was revealed II, I, III order. 3. In the relationship between experimental group and control group in lumbar extensor strength among lumbosacral angle, I group difference was did not. 4. In the relationship between experimental group and control group in lumbar extensor strength among lumbosacral angle, all degree among II group was noted significantly difference except 24, 72 angle. 5. In the relationship between experimental group and control group in lumbar extensor strength among lumbosacral angle, control group was revealed higher muscle strength 48, 60, 72 angle, however no significantly difference was noted 0, 12, 24 angle. The study was objected difference of other group in both of experimental and control group. Because lumbar extensor weakness with bad position was gradually increased back pain, to Maintain normal lumbosacral angle befor exercising lumbar extensor strength was most important.

• Journal of Korean Physical Therapy Science
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• v.9 no.2
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• pp.37-48
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• 2002

The purpose of this study is to improve the effect of Lumbar extensor exercise program and develop the Lumbar extensor exercise program which will be suitable to the patients characteristics. In this study the experimental group was made up of 38 subjects. They are the patients with low back pain using the Lumbar extension exercise program in C hospital. The lumbar extension exercise program was given two times a week for 8 weeks. The results were estimated by Lumbar extensor strength by diagnosis agent. The results were measured three times, one time pre-treatment and two times post-treatment at 4weeks and 8weeks by lumbar extensor curve angle(0, 12, 24, 36, 48, 60, 72). The results were compared at pre-test 4weeks and 8weeks. The muscle strength measured at both 4weeks and 8weeks with the greater strength was shown at 4weeks. The muscle strength of patients with M.strain, Laminectomy and HNP was increased at all angles except for patients with stenosis. The results of this study indicated that diagnosis influenced the muscle strength in Lumbar extensor exercise program.

• Journal of Korean Physical Therapy Science
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• v.7 no.1
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• pp.353-365
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• 2000

The purpose of this study were to compare the lumbar extensor strength between pre op patients group and after 6 weeks post op patients group. To evaluate lumbar extensor strength of total 273 patients with HIVD. Lumbar extensor strength was measured in 151 male patients and 122 female patients(Lumbar extensor strength was measured in 91 PELD patients group and 182 OLM group patients) by Medx lumbar extension machine. Maximum voluntary lumbar extension strength was appear $149.36{\pm}61.92ft$-lbs in pre op of PELD group, $158.47{\pm}54.67ft$-lbs in post op of PELD group and $135.54{\pm}54.24ft$-lbs in pre op of OLM group. $147.19{\pm}52.42ft$-lbs in post op of OLM group in male. Maximum voluntary lumbar extension strength was appear $83.85{\pm}30.22ft$-lbs in pre op of PELD group. $92.99{\pm}28.66ft$-lbs in post op of PELD group and $75.16{\pm}24.98ft$-lbs in pre op of OLM group, $79.88{\pm}25.25ft$-lbs in post op of OLM group in female. Male and female lumbar extension strength was statistically significant difference(P<.05). Lumbar flexion/extension ratio of the two group was 2.14:1 pre op and 2.05:1 post op in lumbar flexion 72 and 0 degree. The ratio of post op group was lesser than pre op group.

• The Journal of Korean Physical Therapy
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• v.14 no.3
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• pp.136-144
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• 2002

The Purpose of this study was to compare the lumbar strength and lumbar flexor/extensor ratio between spondylolisthesis and herniated disc patients. The patients who had a subacute low back pain have been proved to each disease through MRI and we measured the maximal isometric strength of all patients(28) through MedX lumbar extension machine(Ocala, FL). In all patients, males had higher lumbar extensor strength than that of females. Especially, the spondylolisthesis patients had lower lumbar extensor strength than that of herniated disc patients. The statistical significant(p<.05, p<.01) differences were manifested in $48^{\circ},\;60^{\circ}\;and\;72^{\circ}$ between male groups. Also the statistical significant (p<.05) differences were manifested in $60^{\circ}\;and\;72^{\circ}$between female groups. In the lumbar flexor/ extensor ratio, the males of spondylolisthesis groups represented the functional weakness in the flexed portion of the range of motion, and the females of spondylolisthesis and the all patients of herniated disc represented the functional weakness in the extended portion of the range of motion. In conclusion, we may propose the program such that the spondylolisthesis males must increase the ratio of extended portion exercise, and the spondylolisthesis females and herniated disc patients must increase the ratio of flexed portion exercise.

• The Journal of Korean Academy of Orthopedic Manual Physical Therapy
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• v.10 no.2
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• pp.33-43
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• 2004

The purpose of this study was to compare the lumbar extensor strength between before exercise and after 8 weeks exercise in the elderly. To evaluate lumbar extensor strength of total 18 patients (above 59 age) with low back pain or have experienced surgical operation. Lumbar extensor strength was measured in 8 male patients and 10 female patients (9 op group and 9 non-op group) by Medx lumbar extension machine. The data were analyzed with paired t-test compared to muscle strength, with repeated measured ANOVA compared to amount increase of muscle strength, using SPSS ver. 10.0 program. The results of this study were as follows: 1. There were significantly increased total lumbar extension strength was appear $6918.7{\pm}2802.77$ft-lbs in before exercise, $10432.83{\pm}2802.773397.1$ft-lbs in after 8 weeks exercise (p<. 05). 2. There were significantly increased total lumbar extension strength was increased to compared before exercise with after 8 weeks exercise in sex (p<. 05), op/non-op group (p<. 05).

• Journal of The Korean Society of Integrative Medicine
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• v.1 no.3
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• pp.9-17
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• 2013

Purpose : The purpose of this study was to analyze the effects of transverse abdominal exercise on the change of chronic low back pain and lumbar muscle strength. Method : 18 chronic lumbago patients were transverse abdominal exercise for 3weeks. Result : 1. The strength of the lumbar extensor and flexor of the male subjects was increased significantly after abdominal exercise(p<0.05). 2. The strength of the lumbar extensor and flexor of the female subjects was increased significantly after abdominal exercise(p<0.05). 3. The study can confirm significant relationship between the lumbar muscle strength and lumbar pain before and after the exercise Conclusion : The study of could find the increase of the ability of the lumbar extensor and flexor of both male and female subjects suffering from chronic low back and pain using three-week transverse abdominal exercise. The study confirmed the general decrease of pain after the experiment.

• Physical Therapy Rehabilitation Science
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• v.11 no.3
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• pp.370-375
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• 2022

Objective: The purpose of this study was to compare the hip joint muscle strength of patients with chronic back pain with lumbar instability and normal subjects. Design: A case control study. Methods: Five types of lumbar instability test were conducted on forty young women with chronic low back pain for more than six months, and those who had 3 or more positive tests were selected as subjects. To select chronic back pain patients with lumbar instability group, aberrant movement patterns during lumbar flexion test (FMT), prone instability test (PIT), posterior-anterior mobility test (PAT), passive lumbar extension test (PLE), and pressure bio-feedback (PBF) were applied. In addition, a digital muscle strength meter was used to measure the hip flexor, extensor, adductor, and abductor muscles of chronic low back pain patients with lumbar instability group (n=20) and normal subject group (n=20). Results: As a result of comparing the hip joint muscle strength between the chronic back pain patient group with lumbar instability and the normal group, there were significant differences in the hip extensor, abductor, and adductor muscles (p<0.05). Conclusions: Patients of chronic back pain with lumbar instability were found to have weak hip joint muscle strength. Therefore, this study suggest that include hip joint strength exercise for functional recovery of chronic back pain patients.

• Journal of The Korean Society of Integrative Medicine
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• v.3 no.2
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• pp.55-61
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• 2015

Purpose: The purpose of this study was to investigate the effect of regularly strength exercise of spine in teenagers with tutor. Method: Study subjects were 24 middle school students. They were arranged to 2 groups(n=12, respectively). Then experimental group did regularly strength exercise of spine as the handout maneuver during 50min/day and 1day/week in 8 weeks with tutor, but control group did regularly exercise of spine as same maneuver without tutor. For muscle strength of both extensor and flexor of lumbar, the balancing ability and weight distribution index were measured before and after the intervention. Results: For muscle strength of both extensor and flexor of lumbar, there was not significant differences after the intervention, but both flexor and extensor increase mean value of muscle strength than control group. For balancing ability and weight distribution index, there were not significant difference after intervention(p>.05), but experimental group show a tendency to decrease in a few position than control group. Conclusion: When teenagers regularly exercise for spine strengthening for a long time with tutor, it may be increased muscle strength of lumbar and trunk balance.

• The Journal of Korean Academy of Orthopedic Manual Physical Therapy
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• v.11 no.2
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• pp.40-48
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• 2005

In this study, the muscle strength and endurance of the lumbar at flexion and extension were determined using an isokinetic muscle strength meter (Biodex) in patients with chronic lumbar go (10 male and 10 females), and the changes in muscle strength and endurance of the lumbar at flexion and extension after application of Y-shaped sacrospinalis muscle taping, typically used for patient with lumbar go, were studied. In addition, the sacrospinalis muscle taping of a different shape (I-shaped taping) was applied bilaterally centering on the spine, and the muscle strength and endurance of the lumbar at flexion and extension were determined and compared with those before taping. In addition, the results after application of Y-shaped taping and I-shaped taping were also compared. 1. The extensor muscle strength of the lumbar at loading of $60^{\circ}$/sec before application of kinesio Taping and after application of Y-shaped taping showed the level of significance (p<.05). The flexor muscle strength of the lumbar at loading of $60^{\circ}$/sec before application of kinesio taping and after application of Y-shaped taping did not show the level of significance. 2. The flexor muscle endurance of the lumbar at loading of $90^{\circ}$/sec before application of kinesio Taping and application of Y-shaped taping did not show the level of significance. The extensor muscle endurance of the lumbar at loading of $90^{\circ}$/sec before application of kinesio Taping and after application of Y-shaped taping did not show the level of significance. 3. The extensor muscle strength of the lumbar at loading of $60^{\circ}$/sec before application of kinesio Taping and after application of I-shaped taping showed the level of significance (p<.05). The flexor muscle strength of the lumbar at loading of $60^{\circ}$/sec before application of kinesio Taping and after application of I-shaped taping showed the level of significance (p<.05). 4. The flexor muscle endurance of the lumbar at loading of $90^{\circ}$/sec before application of kinesio taping and after application of I-shaped taping showed the level of significance. The extensor muscle strength of the lumbar at loading of $90^{\circ}$/sec before application of kinesio Taping and after application of I-shaped taping showed the level of significance (p<.05). 5. In comparison between after application of Y-shaped taping and after application of I-shaped taping, the flexor muscle strength of the lumbar at loading of $60^{\circ}$/sec did not show the level of significance. In comparison between after application of Y-shaped taping and after application of I-shaped taping, the extensor muscle strength of the lumbar at loading of $60^{\circ}$/ sec showed the level of significance (p<.05). 6. In comparison between after application of Y-shaped taping and after application of I-shaped taping, the flexor muscle strength of the lumbar at loading of $90^{\circ}$/sec did not show the level of significance. In comparison between after application of Y-shaped taping and after application of I-shaped taping, the extensor muscle strength of the lumbar at loading of $90^{\circ}$/sec did not showed the level of significance (p<.05).

• Journal of the Korean Society of Physical Medicine
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• v.8 no.3
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• pp.295-302
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• 2013

PURPOSE: The purpose of this study was to investigate the effect of short-term lumbar stabilization exercise to patients suffering from chronic low back pain(CLBP) on the strength of their lumbar flexor and extensor and the postural balance of them and to suggest effective treatment duration for them. METHODS: Study subjects were 20 patients with CLBP who's been reported the pain for more than 12 weeks. For these subjects, muscle strength of both extensor and flexor of lumbar and the balancing ability were measured before and after the intervention. Lumbar stabilization exercise was composed of matt, ball and sling exercise. The intervention was applied for total 12 sessions for 4 weeks (3 times a week) and each session was for 40 minutes. RESULT: For muscle strength of both extensor and flexor of lumbar, there was significant differences after the application of lumbar stabilization exercise(p<.05). For balancing ability, stabilization shows significant differences in all of the positions except PC(eyes closed on pillows)(p<.05). Distribution of weight shows no significant differences but it was generally distributed within normal range after the exercise and Fall index shows significant differences between before and after the exercise(p<.05). CONCLUSION: These results could have positive effect on deciding different periods of therapeutic intervention.