• Title/Summary/Keyword: 등속성

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Correlation between Korean Shoulder Scoring System and Isokinetic muscle strength test (Korean Shoulder Scoring System과 Isokinetic test를 통한 근력 평가의 상관 관계)

  • Kim, Deok-Weon;Sung, Jung-Hwan;Jung, Jae-Eun;Ko, Min-Soo
    • Journal of Korean Orthopaedic Sports Medicine
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    • v.9 no.2
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    • pp.104-108
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    • 2010
  • Purpose: To evaluate the correlation between Korean Shoulder Scoring System and Isokinetic muscle strength test for allowance of the return to unrestricted activities after rotator cuff disease treatment. Materials and Methods: This study examined 59 patients with impingement syndrome and 36 patients with rotator cuff tear. KSS and isokinetic muscle strength were analyzed and we sought to evaluate the correlation between total score or each functional parameter scores of KSS and isokinetic muscle strength deficit with Pearson's correlation test. Results: We found a weak negative correlation between and the total KSS score and the endurance test as well (r<0.346). The correlation between the manual muscle test of KSS and isokinetic strength deficits was not significant (p>0.05). Conclusion: The isokinetic muscle strength deficit had a weak correlarion between total score or the edurance test of KSS. Our results suggest that the Isokinetic muscle strength test may be needed for return to normal activity after treatment.

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Difference in Quadriceps and Hamstring torque during exercise with concentric and eccentric contractions according to hip joint anglet (등속성 근력측정 시 Hip Joint Angle에 따른 대퇴사두근과 햄스트링의 단축성과 신장성 근력 차이)

  • Kim, eui-young;Lee, jong-hwan
    • Proceedings of the Korea Contents Association Conference
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    • 2010.05a
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    • pp.161-163
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    • 2010
  • 본 연구의 목적은 등속성 운동수행 및 측정시 hip joint angle에 따라 대퇴근육의 concentric 과 eccentric 근력차이를 분석하기 위하여 등속성 기기 의자 등받이 경사각도를 $100^{\circ}$, $120^{\circ}$, $140^{\circ}$에서 peak torque를 검사하였다. 대상자는 20대 초반의 건강한 남자 대학생 12명을 대상으로, 등속성 기기(Isomed 2000, Germany)를 이용하여 seated position에서 $60^{\circ}/s$ 의 각속도를 사용하여 검사를 수행하였다. 측정순서는 등속성기기 의자 등받이 경사각도 $100^{\circ}$, $120^{\circ}$, $140^{\circ}$ 순으로 2-3일 간격으로 진행하였다. 통계처리 방법은 SPSS 12.0 프로그램을 이용하여 평균과 표준편차를 산출하였으며, 각각의 hip angle에 따른 단축성과 신장성 peak torque 값의 차이는 one-way ANOVA(3RM)을 이용하여 처리하였고, 사후검증은 Tukey를 사용하였으며, 유의수준은 p<.05로 하였다. 연구결과 대퇴사두근의 단축성 근력은 등속성 기기 의자 등받이 경사각 $100^{\circ}$, $120^{\circ}$, $140^{\circ}$사이에 유의한 차이(p=.000)가 나타나 사후 분석결과 $100^{\circ}$$120^{\circ}$ 사이(p<.01) 그리고 $100^{\circ}$$140^{\circ}$ 사이(p<.001)에 유의한 차이를 나타내었으며, 신장성 근력에서는 유의한 차이가 나타나지 않았다. 햄스트링의 단축성 근력은 3종류의 hip angle사이에 유의한 차이(p=.001)가 나타나 사후분석결과 $100^{\circ}$$140^{\circ}$사이(p<.05) 그리고 $120^{\circ}$$140^{\circ}$ 사이(p<.01)에 유의한 차이를 나타내었으며, 그러나 신장성 근력에서는 유의한 차이가 나타지 않았다. 이러한 결과로 미루어 볼 때 등속성 운동수행 및 근력측정 시 hip joint angle 에 따라 대퇴사두근과 햄스트링의 단축성 근력에서 유의한 차이가 나타나 hip joint angle을 고려하여 대퇴근육의 운동및 측정이 이루어져야 할 것으로 사료된다.

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Acute Effect of Isokinetic Muscle Strength Related to the Static Stretching of Knee Joint (무릎관절 정적 스트레칭 빈도에 따른 등속성 근력의 급성 효과)

  • Lim, Seung-Geon;Kim, Chang-Guk;Lee, Yun-Seob;Han, Jin-Tae
    • Korean Journal of Applied Biomechanics
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    • v.18 no.4
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    • pp.41-47
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    • 2008
  • The purpose of this study was to provide foundations for proper stretching method not to lose muscle strength caused by shrink of muscle for preventing injury and improving performance when we make training programs. This study compared and analyzed isokinetic variables related to the static stretching frequency of knee joint extensor by isokinetic instruments applied to normal adults. 45 normal adults are randomly sampled into 3 different groups. All the measured variables were processed with SPSS and, means and standard deviations at each angle speed were calculated. The difference of means between before and after stretching of each groups were processed by paired t-test. One-way ANOVA and after test(Duncan) This study was able to see that stretching decrease acute isokinetic muscle strength High frequency stretching group showed more efficient decrease of muscle strength than low frequency stretching group. As a result, making training program for a game requiring strong muscle strength should consider proper stretching method not to lose muscle strength.

Effects of Walking Exercise on Isokinetic Muscular Function (걷기운동이 등속성 근력에 미치는 효과)

  • Lee, Jong-Bok;Kim, Jong-Hyuck
    • The Journal of the Korea Contents Association
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    • v.9 no.10
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    • pp.427-435
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    • 2009
  • The aim of this study was to examine the effect of a brisk walking intervention for 8weeks on isokinetic muscular function factor(strength, power, endurance). The following results were found from the current study: First, Isokinetic muscle function(strength, power, endurance) on $60^{\circ}/sec$ in extension and flexion was significant exercise group and interaction in left knee flexion and right knee extension(P<.00l). Secondly, Isokinetic muscle function(strength, power, endurance) on $120^{\circ}/sec$ in extension and flexion was significant exercise group and interaction in left knee flexion and right knee extension(P<.001). Thirdly, Isokinetic muscle function(strength, power, endurance) on $180^{\circ}/sec$ in extension and flexion was significant exercise group and interaction in left knee flexion and right knee extension(P<.001). Considering the above result of the study the brisk walking had more improvement knee flexor and extensor muscular power. Therefore the brisk walking in the study can be proposed as effective plan to prevention hurt from a sarcopenia and to raise quality in life.

The Effect of Atrophy of the Inpraspinatus on Strength and ROM in Shoulder Joint of Male Volleyball Players (배구선수들의 극하근 근위축이 어깨 관절 회전근력과 운동범위에 미치는 영향)

  • Lee, Byoung-Kwon
    • Korean Journal of Applied Biomechanics
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    • v.19 no.3
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    • pp.549-555
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    • 2009
  • The purpose of this study was to quantify the isokinetic peak torque and range of motion at the shoulder in 8 national male volleyball players who played during the 2008 professional leagues. In this study the strength and range of motion data in the internal rotation(IR) and external rotation(ER) of shoulder joint were measured with isokinetic measurement system(Biodex Inc) and motion analysis system (Simi motion system Inc.) from 3 volleyball players with atrophy of the infrasupinatus and 5 volleyball players without atrophy of the infraspinatus. Peak torques were determined using isokinetic measurement on the shoulder joint rotator at the point of angular velocities of $60^{\circ}$/s. Significant difference was found in the peak torque, IR / ER ratio and the range of motion through assessment of the dominant shoulder between two groups. we recommended functional exercises that improve both external rotators strength and stretching exercise for internal rotation in the dominant side during the prevention programs in volleyball players.

The Effect of Plyometric Training on The Total Work of Knee and Ankle Joint (Plyometric training이 하지 슬관절과 족관절의 등속성 총 일량에 미치는 영향)

  • Moon Young-Lae;Lee Kyung -Il;Park Sung-Yong
    • Journal of Korean Orthopaedic Sports Medicine
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    • v.2 no.1
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    • pp.50-55
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    • 2003
  • Purpose: To investigate the effects of an 8 weeks of plyometric training on the total work of knee and ankles Joint. Methods: Nine university man aged 20$\~$22 years was divided in 2 group. Exercisers (N=5) performing plyometrics (pike jump, double leg hop, double leg bound, single leg hop, stride jump cross over, alternate leg bound, box jump) for 8 weeks. Controls (N=4) maintained their usual activities. The total work of knee and ankle joint were tested prior to and after the training. Results: Plyometric training resulted in significantly greater in the total work of high speed of knee and ankle motion(p<0.05). Conclusions: The plyometric training were partially improved the total work of flexion and extension on the ankle joint. Also plyometric training could influence athletic performance.

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Comparison of Isokinetic Muscular Strength of Knee according to Female Volleyball and Table Tennis Players (여자 배구와 탁구선수의 등속성 운동에 따른 무릎근력 비교)

  • Park, Si-Eun;Kim, Yong-Youn;Park, Shin-Jun
    • Journal of Convergence for Information Technology
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    • v.9 no.7
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    • pp.153-158
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    • 2019
  • The purpose of this study was to compare the isokinetic muscular strength of the knee joint between female volleyball and table tennis players. A total of 27 elite volleyball players and 27 table tennis players participated in the study. This study measured both knee extensor and flexor strengths of volleyball and table tennis players using the isokinetic dynamic test. Peak torque was measured by performing maximal voluntary flexion and extension three times at $60^{\circ}/s$. Volleyball players had higher knee extensor and flexor strengths than table tennis players. No significant difference in both knee strengths was noted in table tennis players. However, volleyball players showed significant differences in both knee strengths. Height and weight showed a positive correlation with knee strength. This study found that volleyball players had greater knee strength than that of table tennis players. We also found that volleyball players have asymmetrical knee strength. Comparison with other sport players is warranted to better understand isokinetic muscular strength of the knee joint.

Comparison of Rotational Strength in Shoulders with Anterior Instability and Normal Shoulders Using Isokinetic Testing (등속성 검사를 통한 견관절 전방 불안정 환자와 정상인의 회전력 비교)

  • Lee, Dong-Ki;Kim, Tae-Kwon;Lee, Jin-Hyuck;Lee, Dae-Hee;Jung, Woong-Kyo
    • Clinics in Shoulder and Elbow
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    • v.15 no.2
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    • pp.79-85
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    • 2012
  • Objective: It has been expected that patient with posttraumatic recurrent anterior shoulder dislocation might have limited daily life activity because of pain and apprehension of dislocation. But there have been only a small number of investigations regarding the rotator strength in this patient. The aim of this study is to find the characteristics about rotator strength of patient with posttraumatic recurrent anterior shoulder dislocation using an isokinetic testing. Method: We enrolled thirteen patients with posttraumatic recurrent anterior shoulder dislocation and fifteen sex, age-matched healthy nonathletic subjects in this controlled study. All participants were male and there were no significant differences between the two groups in age, height, weight, BMI. Isokinetic internal rotator and external rotator strength was evaluated with a Biodex Isokinetic Testing machine (Biodex Medical Systems, Shirley, NY, USA), tests were performed at 60 deg/sec and 180 deg/sec for both sides. Peak torque normalized to body weight, external rotator to internal rotator ratio, total work and fatigue were calculated for each angular velocity. The association between internal rotator and external rotator strength and shoulder instability was analyzed by comparisons with a control group. Results: Any notable differences could not be found between the two groups given all data from no symptomatic left shoulder. There were no significant differences between the two groups statistically in internal rotation strength of right shoulder. However, there has been a tendency that at all angular velocities, external rotator peak torque to body weight, total work and external rotator to internal rotator ratio were significantly lower in the anterior instability group than the control group at all angular velocities. There was no substantial difference between those groups with respect to the fatigue of external rotator and internal rotator in our study. Conclusion: The prominent characteristics of posttraumatic recurrent anterior shoulder dislocation are external rotator weakness and loss of balance with external rotator and internal rotator. Therefore selective training using this information rotator might be helpful in conservative treatment and rehabilitation.

The Effect of 12-week Weight Training with Muscle Strength, Agility Training on Physical Fitness Factors and Isokinetic Muscle Function in of Elementary School Male Soccer Players (초등학교 남자 축구선수들의 12주간 근파워 및 민첩성 트레이닝이 체력요인, 등속성 근기능에 미치는 영향)

  • Kim, Ji-Sun
    • Journal of the Korean Applied Science and Technology
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    • v.39 no.4
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    • pp.527-534
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    • 2022
  • The purpose of this study was to investigate the effects of 12 weeks of muscle power and agility training on physical fitness factors and isokinetic muscle function in elementary school male soccer players. For this purpose, 6 muscle power and agility training programs were organized for 12 elementary school male soccer players and were conducted 3 times a week for 12 weeks. The results of measurement and analysis of physical fitness factors before and after the muscle strength and agility training are as follows. First, there was a significant difference in the standing long jump in place of muscle power(p<.001). Second, there was a significant difference in the standing vertical jump of muscle power(p<.05). Third, there was a significant difference in the side step of agility(p<.01). As a result, 12 weeks of muscle power and agility training can be expected to have a positive effect on the improvement of agility and agility of elementary school male soccer players, and it is judged that it can provide training basic data for injury prevention and performance improvement.