• 대한물리의학회지
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• 제17권1호
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• pp.31-39
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• 2022

PURPOSE: This study examined the changes in the blood fatigue variables caused by isokinetic and isotonic exercise training. METHODS: Ten healthy adult males with at least one year of athletic experience participated. The participants performed the isokinetic circuit exercise program first, followed by an isotonic circuit exercise program. A two-hour break was allowed between the isokinetic circuit exercise program and the isotonic circuit exercise program. The circuit exercise program consisted of four items (Squat, Deadlift, Shoulder press, and Bench press). The blood samples were analyzed for the LDH, CPK, and Cortisol levels. RESULTS: The LDH level in the isokinetic group was significantly different from the isotonic group. In particular, the change in LDH level in the isokinetic group was 33.30% lower than that of the isotonic group. The serum CPK level of the isokinetic group showed a 10.03% lower decrease than the isotonic group, but the difference was not significant. The Cortisol level was relatively unchanged in the isotonic group, but it decreased in the isokinetic group. On the other hand, the Cortisol level did not show a significant difference between the two groups. CONCLUSION: The isokinetic group showed alleviation of the three indices, unlike the isotonic group. Further studies associated with the changes in blood fatigue variables through various exercise programs and exercise intensity will be needed.

• 대한물리치료과학회지
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• 제1권1호
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• pp.165-173
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• 1994

The purpose of this study was to find out the effect of muscular strength of quadriceps, hamstring of knee joint to isokintic, isotonic exercise treatment in stroke. Data was collected from 80 stroke from January 10. 1994 to april 10, 1994 in a Chungnam university hospital. The results were as follows; 1. Peak torque was higher isokinetic than isotonic excercise group both in quadriceps and hamstring of knee joint, 6 weeks, 8 weeks 10 weeks showed statistically significant in isokinetic exercise training group. 2. Total work was high isokinetic than isotonic exercise group both in quadricaps and hamstring of knee joint, 10 weeks 12 weeks showed statistically significant in isokinetic exercise training group. 3. Average peak torque and total work was higher isokinetic than isotonic excercise group both in quadriceps and hamstring of knee joint, showed statistically significant in isokinetic exercise training group (p<0.05).(p<0.01). Isokinetic and isotonic exercise treatment were needed for sutable walk training in stroke. But I think that better method was isokinetic exercise treatment in muscular strength and endurance.

• 한국정밀공학회지
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• 제29권2호
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• pp.229-238
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• 2012

This study is to compare muscle strength between isotonic exercise and isotonic & isokinetic exercise. Participants are 12-man and 10-woman whom they are healthy without medical history in shoulder, elbow and lumbar joint. We performed experiment total 4-weeks that exercise 3-days a week each exercise pattern. We measured shoulder, elbow and lumbar joint torque with BIODEX and circumference of muscle in upper arms once a week. The result showed that isotonic & isokinetic exercise pattern significantly more improved joint torque in shoulder, elbow, lumbar than isotonic exercise pattern. Because that isotonic & isokinetic exercise pattern supplied muscle strengthen and caused muscle contraction. This exercise pattern can be used new exercise training method for major athlete and normal people. Also this pattern can be used rehabilitation treatment.

• International Journal of Contents
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• 제8권2호
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• pp.97-102
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• 2012

The purpose of this study was to investigate the effects of various cool-down exercises on muscular strength and endurance. After receiving a treadmill training for main exercise, the subjects conducted isotonic and isometric cool-down exercises four times for three weeks. Isotonic exercise with leg press of 10kg was repeated by 20 times and isometric exercise was conducted at flexion of hip joint and knee joint with leg press of 10kg by maintaining it for 6 sec and resting for 2 sec by 20 times. Muscular strength after exercise was measured with 1 RM by times and muscular endurance with maximum repetition frequency using time to keep for loading the weight of 10 RM and 65% of maximum muscular strength. As a result of comparing and analyzing measured values, exercise recovery shape of isotonic and isometric cool-down group were more effective than rest recovery shape of the control group. The isometric cool-down group was more effective than isotonic cool-down group. In conclusion, isometric exercise was more effective than isotonic exercise or simple rest on muscular strength and endurance.

• 생명과학회지
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• 제18권1호
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• pp.30-37
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• 2008

본 연구에서는 남자 고등부 태권도 선수들을 대상으로 하여 등장성운동과 등척성 등장성운동을 혼합하여 복합 훈련을 실시한 차이를 알아보기 위하여 등속성 근 기능 중 최대우력, 동측근력비율, 양측근력비율, 근지구력을 분석한 결과를 다음과 같은 결론으로 나타내었다. 첫째, 최대우력은 좌우측 신굴근 모두에서 등장성 운동집단에 비하여 복합 훈련집단이 유의하게 증가한 것으로 나타났다. 둘째, 동측근력비율, 근지구력은 두 집단 간에 유의한 차이는 나타나지 않았지만, 운동전후에 차이에 있어서는 두 집단 모두 유의하게 증가하였다. 셋째, 양측근력비율은 두 집단 간에 유의한 차이는 나타나지 않았지만, 운동전후에 차이에 있어서는 두 집단 모두 유의하게 감소하였다. 이러한 결과로서 태권도 선수들의 경기력 증가를 위한 주요 체력요소인 평형능력, 근 지구력의 향상을 위한 방법으로 등장성 운동과 복합훈련 중 어떠한 방법으로 실시하여도 근 기능을 향상 시킬 수 있는 운동법으로 생각된다. 그러나 등척성 운동과 등장성 운동을 복합적으로 실시하였을 경우 최대우력이 등장성운동을 실시한 집단에 비하여 유의하게 증가하는 현상으로 보면 태권도 발차기의 파워를 보다 증가시키기 위해서는 등장성 운동과 등척성을 복합적으로 실시하는 운동방법이 보다 효과적인 방법으로 생각된다.

• Physical Therapy Rehabilitation Science
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• 제12권2호
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• pp.201-205
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• 2023

Objective: Resistance exercise is a necessary element to improve quality of life, and measurement and evaluation of muscle strength provide important information for prescription and management of rehabilitation and exercise programs. This study analyzed the correlation between direct and indirect 1RM for isokinetic maximum torque of the knee joint in order to provide useful information in the field of exercise programs. In addition, the flexion-extension ratio and the difference in left-right deviation were verified. Design: A cross-sectional study Methods: The subjects of this study were 33 healthy adult men and women without medical problems who participated in the health exercise class program at S University in Seoul. The correlation between isokinetic maximum torque and direct and indirect 1RM was analyzed, and a dependent t-test was performed to analyze the flexion-extension ratio and left-right deviation. Results: There was a high correlation between the isokinetic maximum torque and direct and indirect 1RM, and no statistically significant difference was shown between the test methods in the analysis of the flexion-extension ratio and left-right deviation. Conclusions: Isokinetic muscle function measuring equipment is expensive, so it is difficult to use it in local exercise rehabilitation and training sites. Through this study, it was found that direct and indirect 1RM isokinetic maximum torque showed a high correlation, and there was no difference in evaluating muscle function such as flexion-extension ratio and left-right deviation. Therefore, it is considered that the muscle function evaluation using 1RM in general field can be usefully utilized.

• 한국정밀공학회:학술대회논문집
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• 한국정밀공학회 2011년도 춘계학술대회 논문집
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• pp.415-416
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• 2011

• The Journal of Korean Physical Therapy
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• 제10권2호
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• pp.33-40
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• 1998

This study was carried out to investigate the muscle strength of quadriceps muscles by means of isokinetic test. The experimental objects were devided into electrically stimulated, isotonic and isometric groups and trained for 4weeks. The results were as follows : 1. the values of total work, peak torque, average power and the ratio of peak torque between flexors and extensors revealed singnificant statistically in three experimental groups(p<0.05). 2. The endurance was increased slightly in electrically stimulated group, but decreased in isotonic and isometric group, 3. The value of post training on all items did not reveal significant statistically in three experimental groups(P>0.05). 4. The electrically stimulated groups effected on increasing of muscle strength as isotonic and isometric exercises.

• 대한물리치료과학회지
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• 제29권1호
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• pp.47-54
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• 2022

Background: Plyometric exercise is an exercise exerting forceful power in a brief period using isotonic activation. It is effective to improve reaction of muscle, agility, endurance and athletics performance. Weight training is an exericse improving muscular strength, endurance and respirating ability applying diversely in frequency and load of exercise Plyometric exercise and Weight training is to facilitate the athletics performance though improving the function of lower limb muscle, there is a difference that Plyometic jump squats is the way to improve agility and Weight training is the way to improve muscular strength. Therefore, it is necessary to know how this difference effects on athletics performance as measuring ankle, ROM, and jumping ability. Design: Randomized controlled trial. Method: This study was conducted with the voluntary participation of 40 university students, who were randomly assigned to jump squat and calf raise groups (n=20 per group). For each subject, we measured the range of motion of the ankle joint before and after exercise, as well as a standing broad jump and vertical jump test performance. We compared the performance indices before and after exercises using paired t-tests, and between groups using independent-samples t-tests. Conclusions: Both jump squat and calf raise exercises improved ankle joint dorsiflexion and plantar flexion, as well as standing broad jump and vertical jump height performance. However, there were no significant differences before versus after exercise, or between exercise types. Although jump squats and calf raises have different purposes, it is thought that, in combination, these exercises improve performance more effectively than either alone, and that such a combined exercise program improves the quality of training in both the general public and athletes in various sports.

• 대한추나의학회지
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• 제4권1호
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• pp.119-127
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• 2003

본 증례는 약 8 주간의 운동치료와 스트레칭 프로그램의 운용으로 요통의 감소와 함께 요부근력의 상승을 가져왔다. 환자 관리에 유용한 입원 치료를 통하여 타 연구에 비해 뛰어난 요부근력의 향상을 보였는데 이는 일정 기간 내에서 환자 관리에 따라서 요부 근력의 상승정도를 높일 수 있음을 보여준다고 생각된다. 추나치료, 침구치료 등이 미치는 영향에 대해서 일일이 제한을 두지 않았고 이러한 한방치료의 병행 자체가 미치는 영향에 대하여서는 보다 많은 case 연구가 필요하다고 생각된다.