• Title/Summary/Keyword: 등속성 운동

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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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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.

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.

The Effect of Combined Exercise Training to Knee Joint Isokinetic Muscular Function in the Taekwondo Athlete (복합운동처치가 태권도 선수의 슬관절 등속성 근 기능에 미치는 영향)

  • Choi, Kyung-Suk
    • Journal of Life Science
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    • v.18 no.1
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    • pp.30-37
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    • 2008
  • The purpose of this study was to investigate the effect of Isotonic Training and Isotonic isometric complex Training to Knee joint Isokinetic muscle function in the high-school Taekwondo athlete. This subjects were randomly divided into two groups; a Isotonic Training group (n=7) Isotonic isometric complex Training group (n=7), Taekwondo athletes share each, 12 weeks between executes a motion. peak torque, H/Q ratio, bilateral muscular ratio muscular endurance of knee joint measured. For this study, two-way ANOVA with repeated measure were used. The result of this study presents between groups was not plain difference expressed. H/Q ratio, bilateral muscular ratio, muscular endurance was plain difference expressed after 12 weeks point of time (p>0.05) and peak torque was plain difference expressed (p<0.05). Conclusion each group did not appear all but one (peak torque), but point of view exercise was effect H/Q ratio, bilateral muscular ratio, muscular endurance, peak torque plain difference expressed.

Effect of Nurida-Ball exercise on muscle function, spinal alignment, and dynamic balance capacity in Middle-Aged Men (누리다 볼 운동이 중년 남성의 근기능, 척추정렬 및 동적 균형능력에 미치는 영향)

  • Choi, Dong-Hun;Kim, Tae-Kyung;Park, Jae-Myoung;Jung, Jong-Hwan;Yeom, Dong-Chul;Cho, In-Ho;Cho, Joon-Yong;Koo, Jung-Hoon
    • Journal of the Korean Applied Science and Technology
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    • v.37 no.6
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    • pp.1556-1566
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    • 2020
  • The purpose of this study was to investigate the effect of Nurida-Ball exercise on isokinetic muscle function, spinal alignment, and dynamic balance capacity in middle-aged men. All middle-aged men(n=16) were divided into 2 groups: Ball exercise(BE, n=8) and control(CON, n=8) group. BE group performed the Nurida-Ball exercise(30 min/day, 3 days/week, 8 weeks) and isokinetic knee and trunk muscle function, spinal alignment, and dynamic balance capacity were measured. All of the measured variables calculated the mean and standard deviation and verified normality using the Shapiro-Wilk test. The independent t-test method and the Paired t-test method were then analyzed to identify differences between groups. This study found that isokinetic knee and trunk muscle function was significantly strengthened in the BE compared with CON group by increasing peak torque(PT) of right and left knee extension(60°/sec, p<0.01, respectively), average power(AP) of right and left knee extension(60°/sec, p<0.05, p<0.01, respectively), and PT of right knee flexion(180°/sec, p<0.05) and AP of right knee extension(180°/sec, p<0.05). In the change of isokinetic trunk muscle function, only PT of trunk extension(180°/sec) was increased in the BE compared with the CON group(p<0.05). In addition, Nurida-ball exercise can improve the spinal alignment by reducing the trunk inclination(p<0.05) in the BE compared with the CON group. Finally, dynamic balance capacity was also enhanced in the BE compared with the CON group by decreasing the score of overall balance index(OBI, p<0.01) and Antero-posterior balance index(p<0.05) in the Stage-6, and OBI(p<0.05) in the Stage-1. This result demonstrated that Nurida-ball exercise may improve spinal alignment, dynamic balance capacity, and isokinetic muscle function, which might be an effective way for the improvement of health-related fitness in middle-aged men.

Effect of Kinesio Taping on Isokinetic Muscular Function and Pain of Knee Joint in Elderly Women (키네시오 테이핑이 고령자의 슬관절 등속성 근 기능 및 통증에 미치는 영향)

  • Bang, Hee-Myung
    • The Journal of the Korea Contents Association
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    • v.6 no.12
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    • pp.226-234
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    • 2006
  • The aim of this study were to evaluate the effect of kinesio taping on isokinetic muscular function and pain of knee joint. The subjects for this study were twelve elderly women($65{\sim}70$years) suffered by knee joint pain over more than three years. The taping methods performed on 3 times a week for 8 weeks for improvement of isokinetic muscular function. Also, the change of visual analogue scale(VSA) and varval rating scale(VRA) has been measured before and post taping 8 weeks. Paired t-test was performed for data analysis at the 0.05 level of significance. After 8 weeks, the results of the study are as follow; First, peak torque, peak torque % BW, total work and ipsilateral balance ratio were significantly improved. And, work fatigue, visual analogue scale and verval rating scale were decreased significantly after 8 weeks taping. The results suggest that applying kinesio taping on knee joint may improve isokinetic muscular function of elderly women. Therefore kinesio taping method was effective for pain relief and prevention of knee joint pain in the elderly women.

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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.

Effect of a 12-week Shoulder Stability Rehabilitation Program on the Range of Motion and Muscle Strength of Baseball Players with Shoulder Instability (12주의 어깨 안정성 회복 프로그램이 견관절 불안정성 야구선수의 관절가동범위, 근력에 미치는 영향)

  • Yoon, Jin-Ho;Oh, Jae-Keun;Song, Ki-Jae
    • Journal of the Korea Convergence Society
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    • v.12 no.10
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    • pp.277-286
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    • 2021
  • This study investigated the effect of a 12-week rehabilitation program on the range of motion (ROM) and muscle strength of high school baseball players with shoulder instability. We allocated 12 players with shoulder instability to the rehabilitation group and 13 players without shoulder instability to the normal exercise group. Covariate analysis (ANCOVA) was performed to assess the ROM of the internal (IR) and external (ER) rotational joints before and after participating in the 12 weeks of rehabilitation, and two-way ANOVA was performed to assess isokinetic muscle strength. The statistical significance level was set at p<.05. The IR ROM of the dominant (D) shoulder with instability and non-dominant (ND) shoulder was significantly increased before and after the rehabilitation program. The total ROM of the D shoulder with instability significantly increased after rehabilitation. IR isokinetic strength significantly improved at an angular velocity of 180°/s after rehabilitation. These results indicate that the rehabilitation program used in this study could be effective in improving ROM and muscle strength in patients with shoulder instability. However, due to the limited results, additional research on the premise of extending the rehabilitation period is necessary.

Comparison of Chin Tuck Against Resistance and Shaker Exercise on Suprahyoid and Sternocleidomastoid Muscle Activity in Stroke Older Patients with Dysphagia (삼킴 장애가 있는 뇌졸중 노인 환자에서 저항성 고개 숙이기 운동과 Shaker 운동의 목뿔위 및 목빗근 활성 비교)

  • Kim, Bon Yi;Lee, Seul;Moon, Jong Hoon;Won, Young Sik
    • 재활복지
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    • v.20 no.3
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    • pp.179-193
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    • 2016
  • Chin Tuck Against Resistance Exercise(CTARE) and Shaker exercise is used to common for strengthening of suprahyoid muscle. No previous studies was compare of two exercises for patients with dyaphagia. This study investigated the effects of CTARE and Shaker exercise on suprahyoid, sternocleidomastoid muscle activity in stroke older patients with dysphagia. Ten stroke patients with dyaphagia voluntarily participated in this study. All subjects was performed in the order in the CTARE (isometric, isokinetic), Shaker (isometric, isokinetic), and repeated each ten trials. After CTARE was performed, subjects took a 5 min wash out period to minimize muscle fatigue. Activity of suprahyoid and sternocleidomastoid muscle during two training was analyzed using surface electromyography(sEMG). Wilcoxon signed rank test was used to assess differecences for muscles activity between the effects of the CTAR and Shaker exercise within group. CTARE and Shaker exercise showed no significant difference activity in suprahyoid muscle(p > .05). CTARE showed significantly lower muscle activity in sternocleidomastoid muscle than Shaker exercise(p < .05). CTARE in stroke older patients with dysphagia may be a effective intervention to improve swallowing function than Shaker exercise.