• 대한통합의학회지
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• 제1권3호
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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.

• The Journal of Korean Physical Therapy
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• 제25권2호
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• pp.49-55
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• 2013

Purpose: This study was conducted in order to analyze the effect of proprioceptive neuromuscular facilitation lower extremity pattern on muscular strength and flexibility in an aquatic environment. Methods: Ten members of the experimental group and 10 members of the control group were randomly selected from 20 college students who are in their 20s. Bilateral symmetry pattern among proprioceptive neuromuscular facilitation lower extremity patterns was applied in an aquatic environment in the experimental group three times per week for a period of six weeks, and a set consisted of 10 times, which was repeated 10 times. On the other hand, subjects in the control group did not receive any treatment while maintaining daily life. Muscular strength was measured using a dynamometer and electromyogram system for maximum voluntary isometric contraction of hip flexor, hip extensor, knee flexor, and knee extensor. Cervical flexibility was measured using cervical range of motion instrument for cervical flexion, rotation, and lateral flexion. Lumbar flexibility was measured using back range of motion instrument II for lumbar flexion. Results: For the experimental group, significance was observed for hip flexor, extensor, knee flexor, extensor, cervical flexion, rotation, lateral flexion, and lumbar flexion. For the control group, no significance was observed for any other variables except for cervical flexion. As a result of observation of difference between the two groups, relatively high significance was observed in the experimental group, compared with the control group. Conclusion: In conclusion, proprioceptive neuromuscular facilitation lower extremity pattern had a positive effect on muscular strength and flexibility in an aquatic environment.

• 한국전문물리치료학회지
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• 제17권3호
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• pp.31-39
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• 2010

The purpose of this study was to determine the effect of sciatic nerve mobilization technique on perceived pain, straight leg raise test (SLR), and strength of knee extensor, location of symptoms (LOS) in patients with chronic low back pain. 22 patients with chronic low back pain were recruited for this study. The subjects were randomly assigned to either the experimental group (EG) or the control group (CG), with 11 patients in each group. All patients received a routine physical therapy (hot pack and transcutaneous electrical nerve stimulation). The mobilization technique of the sciatic nerve was performed for 10 min in the case of the EG subjects. Outcome measurements included the level of the perceived pain, SLR, and strength of the knee extensor, LOS. The measurements were recorded 3 times: before the intervention, after the intervention, and at 1 hour of follow up. The two groups did not significantly differ with regard to the level of perceived pain, SLR, and strength of the knee extensor, LOS before the test (p>.05). In the case of the EG subjects, all the variables measured after the intervention significantly differed from those measured before the intervention (p<.05). However, in the case of the CG subjects, a significant difference was noted only with regard to the level of perceived pain (p<.05). The findings indicate that sciatic nerve mobilization technique exerts a positive effect on the control of subjective symptoms and knee strength in patients with chronic low back pain. Further studies are required to generalize the result of this study.

• The Journal of Korean Physical Therapy
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• 제23권1호
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• pp.13-19
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• 2011

Purpose:This study was designed to investigate difference in isokinetic muscle strength in the knee extensor muscle and characteristic differences in muscle strength between males and females through the ankle joint angles. Methods: Seventy-four subjects participated in this study. There were two groups: 36 males and 38 females. The mean age of the men was 24.58 years and women was 23.74 years. Subjects were seated on a CON-TREX LP (leg press) lean to back of chair, and there bodies were fixed by straps with the hip joint at an angle of $130^{\circ}$. After randomly fixing the ankle joint at $0^{\circ}$, $20^{\circ}$, and $40^{\circ}$ of plantar flexion (PF) in range of full extension of knee joint. We studied force max average, force max average/kg, power average, and total work through the angle of the ankle joint when the knee joint was extended from $90^{\circ}$ to $180^{\circ}$. Results: In the male group, all maximum measured value showed at the ankle joint $0^{\circ}$, all minimum measured value showed at $40^{\circ}$ PF (p<0.01). In the female group, all maximum measured value showed at the ankle joint $20^{\circ}$ PF, especially the power average increased significantly. All minimum measured value showed $40^{\circ}$ PF (p<0.01). Conclusion: There are differences between males and females in isokinetic muscle strength of the knee extensor through ankle joint angles in healthy adults. Males and Females have different characteristics of muscle strength through the ankle joint angles.

• 대한물리의학회지
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• 제16권1호
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• pp.103-109
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• 2021

PURPOSE: This study examined the effects of the Visual Analog Scale (VAS) and knee function index on the knee strength and endurance in the national male field-hockey athletes. METHODS: Twenty-four male field-hockey athletes with a painful knee who trained at the national training center in 2019 were enrolled. The VAS and knee function index questionnaire were used to evaluate the degree of pain and functional state of the knee. The muscle strength and endurance of the knee were measured by Biodex (System 4, USA). The Pearson product moment correlation was performed to examine the effects of the VAS and knee function index the of knee on the strength and endurance. In addition, the VAS and knee function index and muscle strength and muscle endurance were examined to determine the relationship using Simple Linear Regression. The statistical significance level was α=.05. RESULTS: An analysis of the correlation between VAS and knee function index and muscle strength and muscle endurance revealed the VAS and knee function index to be statistically significant (r = .700). In addition, the extensor muscle strength, knee VAS (r = -.457), and knee function index (r = -.414) were also statistically significant. A 1-point increase in the VAS and knee function index was associated with an approximately 9.881 and 1.006 extensor muscle strength. CONCLUSION: The VAS and knee function index of field-hockey athletes are related to the strength of the knee extensors. Therefore, field-hockey athletes should develop a program to strengthen the extensor muscle strength of the knee.

• 대한정형도수물리치료학회지
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• 제16권2호
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• pp.82-87
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• 2010

Purpose : This study was investigate The correlations between the Balance and the knee muscle power and the ankle muscle power. Methods : This studied selected 9cases of the healthy persons. Each measure of muscle power used Bio-dex pro-3. Balance measure was used balance-meter the ability to measure Ant-post, lateral, overall balance. Result : 1. Knee flexor and extensor causes ankles that plantar flexion strength and high correlation r= .745, r= .825 have, Ankle dorsi flexor strength and a bit of correlation r= .249, r= .221) have. 2. Ankle plantar flexor strength and overall balance and correlation was the r= .204, Ankle dorsi flexor strength and lat. balance and correlation was the r= .314. 3. Knee extensor strength and overall balance and correlation was the r=.212.

• Physical Therapy Rehabilitation Science
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• 제5권4호
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• pp.163-169
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• 2016

Objective: The purpose of this study was to investigate the effects of vibration resistance exercise (VRE) in patients with tennis elbow on strength, range of motion (ROM), function, pain and quality of life (QOL). Design: Randomized controlled trial. Methods: Twenty-seven participants were randomly assigned to either the VRE group (n=9), weight resistance exercise (WRE) group (n=9) or control group (n=9). Each group underwent hot compress for 15 minutes and electrotherapy for 15 minutes. The VRE group underwent exercises using a vibrating ball for 5 minutes. The WRE group underwent exercises using dumbbells for 5 minutes. All participants were evaluated on wrist extension strength using a hand-held dynamometer, grip strength level through an electric dynamometer, and ROM through a smartphone goniometer application before and after intervention. Patient-rated tennis elbow evaluation, Visual Analogue Scale and Short Form 8 were measured by questionnaires. Results: There were showed significant differences among the VRE, WRE and control group in wrist extensor muscle and hand grip strength, ROM, elbow function, pain and QOL after intervention (p<0.05). The VRE group showed a greater significant improvement in wrist extensor muscle strength and elbow function compared with the others (p<0.05). The VRE and the WRE groups had a more significant improvement in wrist extensor muscle and hand grip strength, ROM and pain compared with the control group (p<0.05). However, there were no significant differences in QOL among the three groups. Conclusions: Combining VRE with thermotherapy and electrotherapy appears to be more effective in improving wrist extension strength, ROM, elbow function, QOL in tennis elbow patients.

• 융합정보논문지
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• 제9권7호
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• pp.153-158
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• 2019

본 연구의 목적은 여자 배구선수와 탁구 선수 사이에 무릎 관절의 등속성 근력 수준을 비교하는 것이다. 총 27명의 엘리트 배구 선수와 27명의 탁구 선수가 이 연구에 참여하였다. 본 연구는 등속성 근력 측정을 통해 여자 배구선수 및 탁구 선수 무릎 굽힘근 근력과 폄근 근력의 양을 측정하였다. 최대 토크는 $60^{\circ}/s$에서 3회 최대 수의적 굽힘과 폄 수축을 수행하여 측정하였다. 여자 배구 선수는 여자 탁구선수 보다 무릎 폄과 굽힘근 근력이 높았다. 탁구 선수들은 왼쪽과 오른쪽 무릎 근력에 유의한 차이가 없었다. 하지만 배구 선수들은 양쪽 무릎 근력에 차이를 보였다. 또한, 신장과 체중은 무릎 근력과 양의 상관관계를 보였다. 본 연구를 통해 여자 배구 선수는 탁구 선수보다 무릎 근력이 더욱 높은 수준에 있음을 알 수 있었다. 또한 배구 선수가 비대칭적 무릎 근력이 있음을 발견하였다. 향후 연구에서는 등속성 근력강도에 대한 연구가 다른 스포츠 선수와 비교하여 확인될 것을 기대한다.

• 한국전문물리치료학회지
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• 제26권2호
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• pp.69-75
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• 2019

Background: Knee osteoarthritis (OA) diagnosis using Kellgren-Lawrence scores is commonly used to help decision-making during assessment of the severity of OA with assessment of pain, function and muscle strength. The association between Kellgren-Lawrence scores and functional/clinical outcomes remains controversial in patients with knee OA. Objects: The purpose of this study was to examine the relationships between Kellgren-Lawrence scores and knee pain associated with OA, function during daily living and sports activities, quality of life, and knee muscle strength in patients with knee OA. Methods: We recruited 66 patients with tibiofemoral knee OA and determined knee joint Kellgren-Lawrence scores using standing anteroposterior radiographs. Self-reported knee pain, daily living function, sports/recreation function, and quality of life were measured using the knee injury and OA outcome score (KOOS). Knee extensors and flexors were assessed using a handheld dynamometer. We performed Spearman's rank correlation analyses to evaluate the relationships between Kellgren-Lawrence and KOOS scores or muscle strength. Results: Kellgren-Lawrence scores were significantly negatively correlated with KOOS scores for knee pain, daily living function, sports/recreation function, and quality of life. Statistically significant negative correlations were found between Kellgren-Lawrence scores and knee extensor strength but not flexor strength. Conclusion: Higher Kellgren-Lawrence scores were associated with more severe knee pain and lower levels of function in daily living and sports/recreation, quality of life, and knee extensor strength in patients with knee OA. Therefore, we conclude that knee OA assessment via self-reported KOOS and knee extensor strength may be a cost-effective alternative to radiological exams.

• 한국운동역학회지
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• 제33권2호
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• pp.52-61
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• 2023

Objective: This study aimed to investigate the effect of a combined functional intervention program on the pain-related questionnaire, the erector spinae contractile properties, and trunk extensor strength of prime-aged females with non-specific chronic low back pain. Method: 16 (female: 16) prime-aged subjects (age: 60.88 ± 6.09 years, height: 158.16 ± 5.58 cm, weight: 59.05 ± 9.44 kg) participated in this study. Results: Except for Tampa Scale of Kinesiophobia all pain-related questionnaires revealed a significant decrease after the intervention program (p<.001). Tensiomyography of the erector spinae revealed a significant post-intervention program increase in the maximum radial displacement (p<.05) and velocity of contraction (p<.05), however, there wasn't a significant post-intervention program change in the contraction time. Additionally, Trunk extensor strength showed a significant increase post-intervention program (p<.001). Conclusion: Our results indicated that the combined functional intervention program positively changed pain-related questionnaires and reduced erector spinae muscle stiffness, increasing the velocity of erector spinae contraction. Additionally, improved the trunk extensor strength.