Isokinetic

The purpose of this study was to investigate the relationship between the isokinetic quadriceps and hamstring strength and, sprinting ability, agility and vertical jump performance in male volleyball players. Twenty professional male volleyball players (average age 24.5±1.1 years; mean body height 186.5±5.02 cm; mean body mass 75.34±8.39 kg) participated in this study voluntarily. For each player, isokinetic concentric muscle strength tests were performed at 60°/s and 300°/s, jump performance was evaluated by countermovement jump (CMJ) and squat jump (SJ) tests, sprint ability was determined by single sprint performance (10-30 m), and agility performance was measured using the T drill agility test. There were statistically significant correlation between peak torque of extensor and flexor muscles strength at 60°/s, 300°/s contraction velocities and squat jump, countermovement jump (p<0.01). There was no significant correlation between isokinetic knee strength and T drill test and sprint tests (10-30 m) (p>0.05). Moreover, statistically significant relations were found between the performances of athletes in different field tests (p<0.05). This study has shown that isokinetic peak torque of quadriceps and hamstring are significant predictor for field based anaerobic tests, SJ and CMJ, that are similar to the actions made in the game for volleyball players.

The purpose of this study is to analyze the relationship isokinetic strength that the elite water polo players produced with lower and upper limbs (with leg movements) and only upper limbs (without leg movements) and the velocity of the shoot. Eighteen elite male players of Turkish professional water polo first league aged between fifteen and thirty-three took part in the study voluntarily. The physical characteristics of the players were taken and throwing velocities of overhead, back hand and sweep throw were measured from position 2, 3, 4 and 6. Isokinetic strength measurements were made within different joint moves (trunk, shoulder, knee, hip). In two separate shooting protocols (with and without leg movements) the shooting velocity were measured in different positions. A significant difference was found between with and without leg movement in different throwing velocity shoots were recorded in different shooting positions (p<0.01). It was seen that the average of the velocity of with leg movements shoot was higher than the without leg movements shoot. In terms of shooting positions, 2 nd position when the relationship between the velocity of with leg movement shoot and isokinetic muscle strength was considered, trunk flexion, shoulder extension, left hip abduction, left knee flexion as relevant p<0.05, a relationship with right knee extension was found (p<0.01). 3 rd position, a positive relationship (p<0.05) was recorded between trunk flexion, shoulder flexion, left hip abduction, right knee extension and left knee flexion. In 4 th position, between the with leg movement shoot and trunk flexion, shoulder flexion, right hip extension, left hip extension, right hip flexion, left hip flexion, right knee extension, left knee extension, left knee flexion and left hip abduction. A positive relationship (p<0.01) between with leg movement (back) shoots thrown from 6 th and trunk flexion, shoulder extension, shoulder flexion, left hip extension, right hip flexion, left hip abduction, right knee extension and left knee extension. Also a positive relationship (p<0.05) between the with leg movement backhand shoots thrown in 6 th position, and right hip extension and left hip flexion. A positive relationship (p<0.05) was seen between the shoots thrown from part 6 th position with leg movement sweep shoots and trunk flexion and left hip extension. When the relationship between the velocity of without leg movement shoot and isokinetic strength is overviewed according to the positions, in 2 nd position there is a relationship between without leg movement shoot and trunk flexion and shoulder extension, with the shoulder flexion a positive relationship was seen (p<0.01). In 3 rd position, there is a positive relationship (p<0.01), was recorded in the trunk flexion, a positive relationship (p<0.05) was seen in shoulder extension and shoulder flexion. In 4 th position, a positive relationship (p<0.01) was found with the trunk flexion. A positive relationship (p<0.01) was found with the without leg movement backhand shoots that were thrown from the 6 th position and trunk flexion, shoulder extension, shoulder flexion. A positive relationship (p<0.05) was recorded with the without leg movement sweep shoots and trunk flexion and shoulder extension. In conclusion, the isokinetic strength produced by the lower and upper limbs' relation with the velocity of with leg movement shoots thrown from different parts was found. The isokinetic strength produced by the upper limbs' relation with the velocity of without leg movement shoots thrown from different parts was found. The isokinetic strength's (produced by the upper limbs) contribution to the velocity of the shoot in without leg movement shoot is higher than with leg movement shoots. The results of the study upper limbs strengths' (trunk flexion, shoulder flexion, shoulder extension) are more effective in the velocity of the shoot.

Isokinetic strength evaluation of the knee flexion and extension in concentric mode of contraction is an important part of the comprehensive evaluation of athletes. The aims of this study were to evaluate the isokinetic knee peak torque in both the extension and flexion movement in the dominant and non-dominant leg, and the relationship with jumping performance. Twelve elite male handball players from the top Spanish handball division voluntary participated in the study (age 27.68 ± 4.12 years; body mass 92.89 ± 12.34 kg; body height 1.90 ± 0.05 m). The knee extensor and flexor muscle peak torque of each leg were concentrically measured at 60°/s and 180°/s with an isokinetic dynamometer. The Squat Jump and Countermovement Jump were performed on a force platform to determine power and vertical jump height. Non-significant differences were observed between legs in the isokinetic knee extension (dominant= 2.91 ± 0.53 Nm/kg vs non-dominant = 2.70 ± 0.47 Nm/kg at 60°/s; dominant = 1.90 ±...

TEZ12665Tez (Uzmanlık) -- Çukurova Üniversitesi, Adana, 2019.Kaynakça (s. 60-68) var.VIII, 81 s. :_res. (bzs. rnk.), tablo ;_29 cm.Amaç: Bu çalışmanın amacı inme sonrası hemipleji hastalarında izokinetik güçlendirme egzersizinin ön kol kaslarına olan etkisinin değerlendirilmesidir. Gereç ve Yöntem: İnme sonrası en az 6 aylık süreyi dolduran, üst ekstremite ve el Brunnstrom motor iyileşme evresi ? 3 olan hemiplejik hastalar çalışmaya dahil edildi. Hastalar iki gruba randomize edildi. İzokinetik egzersiz grubuna 4 hafta süreyle haftada 3 gün izokinetik güçlendirme eğitimi; kontrol grubuna 4 hafta süre ile haftada 3 gün egzersiz bandı ile güçlendirme egzersizleri verildi. Klinik ve izokinetik ölçütler tedavi önesi, tedavi bitimi (4. hafta) ve 8. haftada değerlendirildi. Takip ölçütü olarak, izokinetik pik tork değeri, Fugl-Meyer Üst Ekstremite Motor Skalası, İnme Etki Ölçeği (İEÖ), Kol, Omuz ve El Sorunları Anketi (DASH), pik izometrik kas kuvveti, el kavrama kuvveti kullanıldı Bulgula...