scholarly journals COMPARAÇÃO DO PICO DE TORQUE ISOCINÉTICO CONCÊNTRICO EM INDIVÍDUOS ATIVOS COM E SEM A APLICAÇÃO DE BANDAGEM ELÁSTICA FUNCIONAL

2015 ◽  
Vol 13 ◽  
pp. 270
Author(s):  
Jéssica Kirsch Micheletti ◽  
Sérgio Luiz Rodrigues De Souza ◽  
Ana Flávia Spadaccini Silva ◽  
Rinaldo Bernardelli Junior ◽  
Berlis Ribeiro dos Santos Menossi
Keyword(s):  
Muscle Function ◽  
Knee Flexion ◽  
Functional Performance ◽  
Peak Torque ◽  
Muscle Performance ◽  
Isokinetic Dynamometer ◽  
Physically Active ◽  
Kinesio Taping ◽  
Isokinetic Evaluation ◽  
Flexion And Extension

Introduction: Physically active individuals constantly seek resources that can improve their muscle performance, avoid the appearance of lesions and even relapses. Kinesio Taping has been used for both treatment/prevention of injury and to improve functional performance. The isokinetic dynamometer enables rapid quantitative analysis of many parameters of muscle function, being the peak torque the most representative in research and clinical practice. Objective: To compare the concentric peak torque isokinetic in active individuals with and without the application of kinesio taping. Method: 10 male volunteers were evaluated and submitted to the IPAQ questionnaire, where they were considered actives. Then, were realized isokinetic evaluations into steps: Phase Control (without application of elastic taping) and Phase Bandage (with application of placebo and original bandage). The same protocol isokinetic repetitions of 5 to 60 ° / s knee flexion and extension was adopted in all the stages for the reliability and reproducibility of the data. Results: The application of taping in physically active individuals in isokinetic evaluation did not increase the concentric peak torque at 60 °/s. Conclusion: Was observed reliability and reproducibility of the results, however, no significant differences were observed in concentric peak torque isokinetic of the quadriceps of active individuals with and without the application of the original kinesio taping and placebo.

scholarly journals Isokinetic performance of knee flexor and extensor muscles in community-dwelling elderly women

2015 ◽  
Vol 28 (3) ◽  
pp. 555-562 ◽  
Author(s):  
Diogo C. Felício ◽  
Daniele S. Pereira ◽  
Bárbara Z. de Queiroz ◽  
Alexandra M. Assumpção ◽  
João M. D. Dias ◽  
...  
Keyword(s):  
Muscle Function ◽  
Elderly Women ◽  
Descriptive Analysis ◽  
Age Groups ◽  
Peak Torque ◽  
Community Dwelling ◽  
Muscle Performance ◽  
Total Work ◽  
Isokinetic Dynamometer ◽  
Extensor Muscles

AbstractIntroduction The isokinetic dynamometer enables accurate assessment of muscle function. In Brazil, few studies have assessed the isokinetic muscle performance in older adults making interpretation and comparison of results with other studies.Objectives To conduct a descriptive analysis of the performance of the muscle flexor and extensor muscles of the knee joint in elderly community and compare the performance between the age groups 65-74 years and 75 years or more.Methods This is a cross sectional observational study with a convenience sample of 229 elderly community. For the analysis of muscle performance was used isokinetic dynamometer (Biodex System 3 Pro™) in the angular velocities of 60 °/s and 180 °/s. The variables evaluated were peak torque, peak torque normalized by body weight, total work normalized by body mass, total work, average power and agonist/antagonist ratio. Descriptive analysis was used to characterize the sample. For comparison between age groups was used Student's t-test with α = 0.05.Results The elderly women with older age showed a statistically significant decrease in most of the variables (p < 0.05) except for the agonist and antagonist knee (p = 0.398).Conclusions The isokinetic was a sensitive tool to characterize the modifications caused by aging on muscle function. Elderly with results below the lower limits of the confidence intervals for all variables certainly has a decreased strength for the age group evaluated and must be addressed therapeutically. The results can be used as a benchmark in clinical practice and future research.

scholarly journals Kinesio Taping Does Not Alter Quadriceps Isokinetic Strength and Power in Healthy Nonathletic Men: A Prospective Crossover Study

2015 ◽  
Vol 2015 ◽  
pp. 1-5 ◽  
Author(s):  
Paweł Korman ◽  
Anna Straburzyńska-Lupa ◽  
Radosław Rutkowski ◽  
Jakub Gruszczyński ◽  
Jacek Lewandowski ◽  
...  
Keyword(s):  
Repeated Measures ◽  
Peak Torque ◽  
Quadriceps Muscle ◽  
Knee Extensors ◽  
Isokinetic Strength ◽  
Acute Effects ◽  
Isokinetic Dynamometer ◽  
Mean Power ◽  
Concentric Contractions ◽  
Kinesio Taping

Objectives. The effects of Kinesio Taping (KT) on muscular performance remain largely unclear. This study aimed to investigate the acute effects of KT on the maximum concentric and eccentric quadriceps isokinetic strength.Study Design. This is a single-blinded, placebo crossover, repeated measures study.Methods. Maximum isokinetic concentric/eccentric extension torque, work, and power were assessed by an isokinetic dynamometer without taping (NT) and with KT or placebo taping (PT) in 17 healthy young men. Repeated measures one-way analysis of variance (ANOVA) was used for statistical analyses.Results. Testing concentric contractions at 60°/s or 180°/s isokinetic speed, no significant differences in peak torque (Nm), total work (J), or mean power (W) were noted among the application modes under different conditions. Testing eccentric contractions at 30°/s or 60°/s isokinetic speed, no significant differences in mentioned parameters were noted, respectively. KT on the quadriceps neither decreased nor increased muscle strength in the participants.Conclusion. KT application onto the skin overlying the quadriceps muscle does not enhance the strength or power of knee extensors in healthy men.

Two Stretching Treatments for the Hamstrings: Proprioceptive Neuromuscular Facilitation Versus Kinesio Taping

2013 ◽  
Vol 22 (1) ◽  
pp. 59-66 ◽  
Author(s):  
Che-Hsiu Chen ◽  
Tsun-Shun Huang ◽  
Huei-Ming Chai ◽  
Mei-Hwa Jan ◽  
Jiu-Jenq Lin
Keyword(s):  
Outcome Measures ◽  
Peak Torque ◽  
Muscle Stiffness ◽  
Muscle Performance ◽  
Static Stretch ◽  
Kinesio Taping ◽  
Negative Results ◽  
Significant Difference ◽  
Proprioceptive Neuromuscular Facilitation ◽  
Before And After

Context:Recent studies have shown that the static stretch (SS) may adversely affect leg-muscle performance.Objectives:The authors examined the short-term effects of 2 stretching exercises on hamstrings muscle before and after exercise.Design:Crossover.Setting:Laboratory.Participants:9 healthy, physically active men.Interventions:There were 3 protocols in a randomized order with a 7-d interval: nonstretching (CON protocol), hamstrings static stretching (SS) with proprioceptive neuromuscular facilitation (PNF), and SS with kinesio-taping application on the hamstrings.Main Outcome Measures:Outcome measures included first-felt and maximum tolerant-felt range of motion (FROM and TROM), maximal knee-flexion peak torque (PT) at 180°/s, and hamstrings muscle stiffness.Results:Groups were not different at prestretching in terms of hamstrings flexibility, PT, and muscle stiffness. At poststretching, both stretching protocols showed significant increases in FROM and TROM (P < .05). Stiffer hamstrings muscle and decreased PT were found in both SS+PNF and CON protocols (P < .05). However, there was no significant difference in the SS+Taping protocol (P > .05).Conclusion:The stretching protocols improve hamstrings flexibility immediately, but after exercise hamstrings peak torque is diminished in the SS+PNF but not in the SS+Taping group. This means that SS+Taping can prevent negative results from exercise, which may prevent muscle injury.

scholarly journals The Comparison between Isokinetic Knee Muscles Strength in the Ipsilateral and Contralateral Limbs and Correlating with Function of Patients with Stroke

2019 ◽  
Vol 10 (04) ◽  
pp. 683-689
Author(s):  
Fayaz Khan ◽  
Haris Anjamparuthikal ◽  
Mohamed Faisal Chevidikunnan
Keyword(s):  
Lower Limb ◽  
Knee Flexion ◽  
Peak Torque ◽  
Lower Limbs ◽  
Isokinetic Strength ◽  
Isokinetic Dynamometer ◽  
Knee Strength ◽  
Torque Measurements ◽  
Significant Difference ◽  
Knee Muscle

Abstract Objective The aim of this study is to compare the isokinetic knee muscles peak torque measurements and proprioception between the affected and intact limbs of patients with stroke, in addition to finding the correlation between knee muscles strength and lower limb function. Methods Twelve patients with stroke (mean age 64.33 ± 6.140 years), with 3 to 7 months poststroke who can walk 25 feet independently without using or using assistive devices and full passive range of motion were included in the study. Biodex isokinetic dynamometer was used for measuring isokinetic strength at 90°/s, 120°/s, and 150°/s and isometric strength at 60°/s in both flexors and extensors of the knee, whereas proprioception was measured at 45°/s knee flexion, all for affected and intact limbs. Functional measurements were assessed using the Fugl-Meyer Assessment for Lower Limb scale and Barthel Index (BI). Results The differences shown were found to be statistically significant between affected and intact limbs in isokinetic 90°/s flexion (p = 0.005), extension (p = 0.0013), and isometric at 60°/s flexion (p < 0.0001) knee muscle strengths and also the proprioception (p = 0.05). Significant positive correlation was found between isokinetic affected side knee flexion at 90°/s (r = 0.903) with BI (r = 0.704). Conclusion There is a significant difference in peak torque measurements between affected and normal lower limbs of poststroke patients, as well as a significant correlation between the knee strength and lower limb functions. Furthermore, it can also be concluded that the differences in knee proprioception between the affected and intact limbs were shown to be significant.

scholarly journals Validity and Reliability of Isometric-Bench for Knee Isometric Assessment

2020 ◽  
Vol 17 (12) ◽  
pp. 4326
Author(s):  
Johnny Padulo ◽  
Nebojša Trajković ◽  
Drazen Cular ◽  
Zoran Grgantov ◽  
Dejan M. Madić ◽  
...  
Keyword(s):  
Knee Flexion ◽  
Concurrent Validity ◽  
High Reliability ◽  
Low Cost ◽  
Isometric Strength ◽  
Systematic Bias ◽  
Validity And Reliability ◽  
Isokinetic Dynamometer ◽  
Isometric Forces ◽  
Flexion And Extension

There is a strong need for a new, probably cheaper, smaller, and more portable isometric dynamometer. With this aim, we investigated the concurrent validity and reliability of a low-cost portable dynamometer to measure the isometric strength of the lower limb. Seventeen young participants (age 16.47 ± 0.51 years) were randomly assessed on three different days for knee flexion and extension isometric forces with two different devices: a commonly used isokinetic dynamometer (ISOC) and a portable isometric dynamometer prototype (ISOM). No significant differences were observed between the ISOC and the ISOM (all comparisons p > 0.05). Test–retest comparison showed the ISOM to have high reliability (ICC 0.879–0.990). This study showed that measurements with the ISOM could be performed without systematic bias and with high reliability. The ISOM is a device that is able to assess knee isometric strength with excellent concurrent validity and reliability.

Validity of Knee Flexion and Extension Peak Torque Prediction Models

1990 ◽  
Vol 70 (1) ◽  
pp. 3-10 ◽  
Author(s):  
Michael T Gross ◽  
Jennifer K Credle ◽  
L Annette Hopkins ◽  
Tracy M Kollins
Keyword(s):  
Knee Flexion ◽  
Prediction Models ◽  
Peak Torque ◽  
Flexion And Extension

Time of day effect on isokinetic peak torque during knee flexion and extension

2016 ◽  
Vol 24 (4) ◽  
pp. 285-293 ◽  
Author(s):  
Rachel H.W. Bowdle ◽  
Barbara L. Warren ◽  
Jung Kim
Keyword(s):  
Knee Flexion ◽  
Peak Torque ◽  
Time Of Day ◽  
Flexion And Extension ◽  
Isokinetic Peak Torque

scholarly journals Determination of the isokinetic muscle strength profile of knee flexors and extensors in visually impaired long-distance athletes: Pilot studyGörme engelli uzun mesafe atletizm sporcularında diz fleksör ve ekstansörlerinin izokinetik kas kuvvet profilinin belirlenmesi: Pilot çalışma

2017 ◽  
Vol 14 (2) ◽  
pp. 2111
Author(s):  
Tuğba Kocahan ◽  
Bihter Akınoğlu ◽  
Çağlar Soylu ◽  
Necmiye Ün Yıldırım ◽  
Adnan Hasanoğlu
Keyword(s):  
Muscle Strength ◽  
Knee Flexion ◽  
Visually Impaired ◽  
Peak Torque ◽  
Long Distance ◽  
Long Distance Running ◽  
The Right ◽  
Dominant Side ◽  
Knee Flexors ◽  
Flexion And Extension

Purpose: The aim of this study is to determine the isokinetic muscle strength profile of knee flexor and extensor muscles of visually impaired long distance running athletes and compare them with the literature.Methods: The study consisted of 7 male visually impaired long distance running athletes aged between 19-28 (means 24,14±3,23), who complied with the criteria and voluntarily participated in the study. İsokinetic measurement was performed with Isomed 2000® device. İn isokinetic evaluation, maximal muscle strength, muscle strength ratios, percentage of right-left strength difference ratio of knee flexors and extensors were recorded. İsokinetic testing protocol; before the test all athletes performed the knee flexion and extension isokinetic test with the 5 repeating at 90 º/sec as a warm-up and for comprehenting the test. Then, knee flexion and extension concentric-concentric strength measurements were performed with the 5 repeating at 60 º/sec and with the 15 repeating at 180 º/sec with the angle between 90 degrees of knee flexion and 10 degrees of knee extension. The evaluations were performed bilaterally, first dominant side and after 3 minutes non dominant side was evaluated.Results: The H / Q peak torque ratio of the athletes is 53.55% for the dominant side and 55.47% for the non-dominant side at 60º / sec. velocity while 59.05% for the dominant side and 61.34% for the non-dominant side at 180º / sec. velocity. When the H / Q peak torque ratio of the athletes was compared between dominant and non-dominant sides, there was no difference in both angular velocities (p>0.05). Knee flexion and extension isokinetic muscle strength’s difference were determined lower than %10 for both angular angles when compared to the asymmetry of the right and left extremities. It was found that this was in accordance with the literature and there was no asymmetry between the right and left sides.Conclusion: In visually impaired long distance runners, having H/Q ratio lower than normal borders against knee flexors for both sides at 180°/sec. angular velocity poses a risk for injuries. In terms of prevention of sports injuries, it is necessary for the athletes to maintain muscle force balance which is specific to each angular velocity and to exercise with sports-specific exercises.Extended English abstract is in the end of PDF (TURKISH) file.ÖzetAmaç: Bu çalışmanın amacı görme engelli uzun mesafe atletizm sporcularının diz fleksör ve ekstansör kaslarının izokinetik kas kuvvet profilini belirlemek ve literatürdeki bilgilerle karşılaştırmaktır.Method: Çalışmamıza; 19-28 (Ort. 24,14±3,23) yaş aralığında 7 erkek görme engelli uzun mesafe atletizm sporcusu dâhil edildi. İzokinetik kas kuvveti Isomed 2000® cihazı ile değerlendirildi. İzokinetik değerlendirmede diz fleksör ve ekstansörlerinin maksimum kas kuvveti, kas kuvvet oranları, sağ-sol kuvvet farkı oranı yüzdesi kaydedildi. Değerlendirmede 90-10 º fleksiyon açılarında konsantrik-konsantrik kuvvet ölçümü yapıldı. İzokinetik test protokolü olarak; 5 tekrarlı 90º/sn. hızla testi anlama ve submaksimal ısınma hareketinden sonra, 5 tekrarlı 60º/sn. hızla ve 15 tekrarlı 180º/sn. hızla maksimal diz fleksiyon ve ekstansiyon hareketleri yaptırıldı. Değerlendirmeler bilateral olarak gerçekleştirildi ve öncelikle dominant taraf, 3 dk sonra non-dominant taraf değerlendirildi.Bulgular: Sporcuların H/Q peak tork oranı 60º/sn. hızda dominant taraf için % 53.55, non-dominant taraf için % 55.47 bulunurken 180º/sn. hızda dominant taraf için % 59.05, non-dominant taraf için % 61.34 bulundu. H/Q peak tork oranı dominant ve non-dominant taraf arasında karşılaştırıldığında her iki açısal hızda da farklılık bulunmadı (p>0,05). Sağ ve sol ekstremiteler asimetri açısından karşılaştırıldığında diz fleksiyon ve ekstansiyon izokinetik kas kuvveti farkının her iki açısal hızda da %10 un altında olduğu belirlendi. Bu durumun literatür ile uyumlu olduğu ve sağ-sol taraf arasında bir asimetri olmadığı sonucuna varıldı.Sonuç: Çalışmamız sonucunda Görme engelli uzun mesafe koşucularında 180º/sn. açısal hızda H/Q oranının normal sınırlardan daha düşük ve her iki tarafta diz fleksörleri aleyhinde olması yaralanma açısından risk oluşturmaktadır. Spor yaralanmalarının önlenmesi açısından sporcuların her açısal hıza özgü olan kas kuvvet dengesinin korunması ve spora özgü egzersizlerle çalıştırılması gereklidir.

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