• 대한예방한의학회지
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• 제12권3호
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• pp.129-139
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• 2008

The purpose of this study was to investigate the effect of aqua exercise on women 50 years of age or older with knee degenerative arthritis, and then examining the therapeutic value of aqua exercise in degenerative arthritis of the knee. The subjects of the study were 115 residents 50 years of age or older who had been diagnosed as degenerative arthritis of the knee by doctors from medical institutions and applied for the aqua exercise program in the Public Health Care Center in Suseong-gu in 2006 and 2007. Experiments were conducted to all the subjects with the application of the 8-week aqua exercise program (2 times a week, 50 minutes a time), designed in the study, and the differences before and after the aqua exercise were compared through questionnaires for measuring the state of the body such as the knee extension angles, weight, body fat, and abdominal obesity. The data was analyzed by t-test and the Wilcoxon method through SPSS 14.0 and the statistical significance level ${\alpha}$ was set at 0.05 and 0.01. The results of the study are as the following. First, In comparison of before and after the aqua exercise, there was improvement in the extension angle of the right knee(p<0.01), while there was some improvement in the extension angle of the left knee, it was not significant. Second, In comparison of before and after the aqua exercise there were statistically significant differences in weight(p<0.05), body fat ratio, and abdominal obesity(p<0.01). The results of this study showed that the aqua exercise program to female patients with knee degenerative arthritis significantly increased the extension angle of the knee. Therefore it is thought that aqua exercise is an effective meditating method to improve their symptoms of female patients 50 years of age or older

• The Journal of Korean Physical Therapy
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• 제15권2호
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• pp.123-130
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• 2003

This case study was performed to assess the effectiveness of taping therapy for the patient who have patellofemoral joint pain during knee extension exercise. The results were as follows: 1. Pain degree of VAS was decreased at every taping therapy. 2. A number of knee extension was increased at every taping therapy. 3. Diameter of quadriceps was increased at every taping therapy. 4. Pattern of gait was normalized at every taping therapy. We found improve of pain degree, a number of knee extension, diameter of quadriceps, and pattern of gait. These results are imply that taping therapy may have effectiveness to those who have patellofemoral joint pain during knee extension exercise.

• 대한물리의학회지
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• 제8권4호
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• pp.593-600
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• 2013

PURPOSE: We investigated the relationship between personality, music type and MVIC, power for the knee extensor on inducing muscle fatigue. METHODS: The subjects of this study were 22 healthy students. MVIC(Maximum Voluntary Isometric Contraction) and power in knee extension was measured by PRIMUS RS. Personality types was measured by MBTI(Myers-Briggs Type Indicator) that is an instrument designed to provide descriptive profiles of personality types and preferences. The collected data were analyzed using the independent t-test, MANOVA and Pearson-test. RESULTS: There was no significant differences both MVIC and power of the knee extensor according to personality and music type. The power was significantly increased by increasing the MVIC during a knee extension on inducing muscle fatigue without music type(r= .786~.896). There was no significant correlation both MVIC and power of the knee extensor according to personality. CONCLUSION: There was a positive correlation between power and MVIC during a knee extension on inducing muscle fatigue without music type. There was no significant correlation both MVIC and power of the knee extensor according to personality.

• 한국정밀공학회:학술대회논문집
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• 한국정밀공학회 2005년도 춘계학술대회 논문집
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• pp.1933-1936
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• 2005

The isometric area of the anterior cruciate ligament was calculated during knee flexion-extension. Flexion-extension motion data of the joint were obtained using Fastrak and a three-dimensional motion measurement system. A total of five subjects were seated on a flat table and the tibia sensor position was measured with the femur fixed on the table. A three-dimensional knee model was constructed using a graphic tool to simulate the knee motion. Twenty seven positions of the tibia region and forty two positions of the femur region were selected and the distances between the determined tibial and femoral points were calculated. Highly isometric areas were found and displayed as three dimensional aspects.

• 한국콘텐츠학회논문지
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• 제9권1호
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• pp.323-330
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• 2009

무릎의 신전이 방해되는 이유는 여러 가지가 있다. 하지만 우리가 특별히 구조적인 기형을 환자에게서 찾아내지 못하는 한 넙다리근육 강화나 신전을 위한 하지 폄근육군 완화운동 방법을 알려주는 것 이외에 별달리 해줄 수 있는 것이 없다. 이 연구에서 저자는 Sacro-Occipital Technique을 활용한 무릎 움직임 방해 완화에 대하여 새로운 사례연구를 하였다. 이 연구에서는 무릎을 완전히 펴고 서지 못하는 14세의 여학생에게 7회의 S.O.T categoryⅠ. 방법이 적용되었으며 이로서 별다른 방해 없이 무릎을 펴고 설수 있게 되었다. 대체적으로 무릎을 곧바로 펴지 못하는 많은 경우 근육 연조직 마사지 등을 뒤넙다리근에 적용하여 완화 시켜 보기도 한다. 그러나 만약 이러한 방법들이 잘 듣지 않는다면 S.O.T categoryⅠ. 방법을 고려하여 보는 것도 도움이 될 수 있을 것으로 사료된다.

• The Journal of Korean Physical Therapy
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• 제30권5호
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• pp.159-165
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• 2018

Purpose: The aims of this study were to determine if game-based training with constraint-induced movement therapy (CIMT) is effective in improving the balance ability in female patients with a total knee replacement, and to provide clinical knowledge of CIMT game-based training that allows the application of total knee replacement. Methods: Thirty-six patients who had undergone a total knee replacement were assigned randomly to CIMT game training (n=12), general game training (n=12), and self-exercise (n=12) groups. All interventions were conducted 3 times a week for 4 weeks. All patients used a continuous passive motion machine 5 times a week and 2 times a day for 4 weeks. The visual analog scale (VAS), muscle strength of knee flexion and extension, and range of motion (ROM) of knee flexion and extension were assessed, and the functional reach test (FRT), and timed up and go (TUG) test were performed to evaluate the balance ability. Results: All 3 groups showed significant improvement in the VAS, knee flexion and extension muscle strength, FRT, and TUG test after the intervention (p<0.05). Post hoc analysis revealed significant differences in FRT, and TUG of the CIMT game training group compared to the other group (p<0.05). Conclusion: Although the general game training and CIMT game training improved both the knee extension muscle strength and dynamic balance ability, CIMT game training had a larger effect on dynamic balance control.

• 한국전문물리치료학회지
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• 제26권3호
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• pp.23-31
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• 2019

Background: Measurement of passive ankle dorsiflexion range of motion (ADROM) is often part of a physical therapy assessment. Objects: The objective of this study was to identify the effects of subtalar joint neutral position (SJNP) on passive ADROM according to knee position in young adults. Methods: We recruited 14 young adult participants for this study. Two examiners used a universal goniometer to measure passive ADROM with and without SJNP. Dorsiflexion force was applied to the forefoot until maximum resistance was reached in two knee positions (extension and $90^{\circ}$ flexion) in the prone position. Subtalar joint position was also recorded at maximum ADROM. Passive ADROM was measured three times at different knee and subtalar joint positions, in random order. Two-way repeated-measures analysis of variance was used to compare the effects of subtalar joint and knee position on passive ADROM. Results: Passive ADROM was significantly lower with than without SJNP during both knee extension (mean difference: $7.4^{\circ}$) and $90^{\circ}$ flexion (mean difference: $16.9^{\circ}$) (p<.01). Passive ADROM was significantly higher during $90^{\circ}$ knee flexion than during knee extension both with (mean difference: $5.8^{\circ}$) and without SJNP (mean difference: $15.2^{\circ}$) (p<.01). The valgus position of the subtalar joint was significantly lower with than without SJNP during both knee extension (mean difference: $3.3^{\circ}$) and $90^{\circ}$ flexion (mean difference: $4.3^{\circ}$) (p<.01). Conclusion: Our results indicate that the gastrocnemius may limit ankle dorsiflexion more than the soleus does. Greater dorsiflexion at the subtalar and midtarsal joints was observed during passive ADROM measurement without than that with SJNP; therefore, SJNP should be maintained for accurate measurement of ADROM.

• 한국운동역학회지
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• 제15권1호
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• pp.207-219
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• 2005

The purpose of this study was to determine the effect of the foot rotation on the lower limb muscles. Fourteen subjects performed step-up/step-down at a cadence of 80 beats/min, exercises with the foot neutral, $35^{\circ}$ internally rotated, and $35^{\circ}$ externally rotated, respectively. For each variable, a one-way analysis of variance (ANOVA) was used to determine whether there were significant differences between genders and among the eight types of jump. When a significant difference was found in jump type, post hoc analyses were performed using the Tukey procedure. A confidence level of p < .05 was used to determine statistical significance. The results showed that significant changes in averaged IEMG values occurred with the internal rotation of the foot in the lateral gastrocnemius during the knee extension, and in the semitendinosus during the knee flexion. During the knee extension, however, the internal rotation of the foot produced a significantly lower Averaged IEMG values than the neutral foot position in the medial gastrocnemius. The results also found that the peak IEMG activity of the rectus femoris during the knee extension for the external rotation of the foot was Significantly higher than the corresponding values in the neutral position of the foot, while the intenal rotaion of the foot exhibited a significant difference with the neutral position of the foot in the semitendinosus during the knee flexion. In general, the foot rotation position did not influence the average IEMG and Peak IEMG values of most muscles. The practice of adopting foot rotation to selectively strengthen individual muscles of the lower limb was not supported by this study. The external rotation of the foot produced high muscle activities in the quadriceps during the knee extension. For the knee extension, therefore, maintaining a laterally rotated position should be need for stable and comfortable position.

• The Journal of Korean Physical Therapy
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• 제12권2호
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• pp.145-152
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• 2000

슬관절 자세에 따라 족관절 저측굴곡관의 근력을 비교 분석하기 위하여 건강한 남녀 20명을 대상으로 Cybex 6000을 사용하여 측정한 결과는 다음과 같다. 1. 최대 토오크 값은 양쪽 모두 슬관절 신전상태서 $90^{\circ}$ 굴곡에서보다 높았다. 슬관절 신전상태에 대한 $90^{\circ}$ 굴곡에서의 토오크 값의 비는 운동속도 $30{\circ}/sec$ 와 $90{\circ}/sec$에서 각각 $75.7\%\;85.2\%$였다. 2. 최대 토오크는 $30{\circ}/sec\;90^{\circ}/sec$에서 모두 슬관절 신전상태에서 $90^{\circ}$ 굴곡상태에서보다 운동의 초기에서 나타났으나 유의란 차이는 업었다. 3. 저측룰곡근의 총일량은 굴곡보다 신전상태서 높았다. 슬관절 신전상태 대한 $90^{\circ}$ 굴곡에서의 총일량의 비는 운동속도 $30{\circ}/sec$와$90{\circ}/sec$에서 각각$81\%,\;89\%$였다. 4 저측굴곡근의 근지구력은 슬관절 신전상태와 $90^{\circ}$ 굴곡상태애서 $78.35\%,\;92.70\%$로 굴곡상태에서 높았다. 5. 일률은 $30{\circ}/sec$에서 슬관절 신전에서 높았다. 위 연구 결과는 족관절 손상환자의 물리치료 시에 배 측굴곡근과 저측굴곡근의 근력 비와 더불어 근재교육에 유용한 자료로 사용될 수 있을 것으로 사료된다. 또한 근력증가를 위한 목적으로 운동치료 시 슬관절 신전상태에서의 저측굴곡운동이 더 효율적인 방법이라 생각된다.

• 대한물리의학회지
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• 제4권1호
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• pp.15-21
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• 2009

Purpose : The purpose of this study was to find the effect of ankle joint angle on knee extensor electromyographic activity following knee extension exercise. Methods : Ten male university students participated in the study. The subjects performed isometric maximal voluntary knee extensor contractions (MVC) and knee extensor EMG activity measured in with three different ankle joint angle. The EMG activity of rectus femoris(RF), vastus medialis(VM), vastus lateralis(VL) were measured using surface electromyography. Results : EMG activity of vastus lateralis following the change of ankle joint angle was shown statistically significant difference. Conclusion : Ankle plantar flexion position increase EMG activity of vastus lateralis during knee extension exercise.