scholarly journals Correlation between Isokinetic Peak Torque and Anaerobic Ability in Middle School Soccer Players

2016 ◽  
Vol 25 (2) ◽  
pp. 120-126
Author(s):  
Dong-Hoon Yoo
Keyword(s):  
Middle School ◽  
Peak Torque ◽  
Soccer Players ◽  
Isokinetic Peak Torque

Effect of Acute Static Stretching Duration on Isokinetic Peak Torque in Pubescent Soccer Players

2006 ◽  
Vol 18 (2) ◽  
pp. 252-261 ◽  
Author(s):  
Athanasios Zakas ◽  
George Doganis ◽  
Christos Galazoulas ◽  
Efstratios Vamvakoudis
Keyword(s):  
Knee Flexion ◽  
Force Production ◽  
Peak Torque ◽  
Soccer Players ◽  
Static Stretching ◽  
Warm Up ◽  
Angular Velocities ◽  
Leg Extensors ◽  
Isokinetic Peak Torque ◽  
Stretching Exercises

Although athletes routinely perform warm-up and stretching exercises, it has been suggested that prolonged stretching immediately before an activity might negatively affect the force production. Sixteen male pubescent soccer players participated in the study to examine whether a routine duration of acute static stretching is responsible for losses in isokinetic peak torque production. All participants performed two static stretching protocols in nonconsecutive training sessions. The first stretching protocol was performed three times for 15 s (volume 45) and the second 20 times for 15 s (volume 300). Range of motion (ROM) was determined during knee flexion with the use of a goniometer. The peak torque of the dominant leg extensors was measured on a Cybex NORM dynamometer at various angular velocities. The statistical analysis showed that peak torque did not change following the static stretching for 45 s in all angular velocities, while it decreased (p < .001) in all angular velocities following the static stretching for 5 min. The findings suggest that strength decreases after static stretching exercises may be the result of the performed stretching duration.

Acute effects of static stretching duration on isokinetic peak torque production of soccer players

2006 ◽  
Vol 10 (2) ◽  
pp. 89-95 ◽  
Author(s):  
Athanasios Zakas ◽  
George Doganis ◽  
Vasilios Papakonstandinou ◽  
Thomas Sentelidis ◽  
Eustratios Vamvakoudis
Keyword(s):  
Peak Torque ◽  
Soccer Players ◽  
Static Stretching ◽  
Acute Effects ◽  
Isokinetic Peak Torque

scholarly journals Strength development according with age and position: a 10-year study of 570 soccer players

2021 ◽  
Vol 7 (1) ◽  
pp. e000927
Author(s):  
Robson Dias Scoz ◽  
Bruno Mazziotti Oliveira Alves ◽  
Ricardo Lima Burigo ◽  
Edgar Ramos Vieira ◽  
Luciano Maia Alves Ferreira ◽  
...  
Keyword(s):  
Retrospective Study ◽  
Peak Torque ◽  
Soccer Players ◽  
Eccentric Contractions ◽  
Strength Development ◽  
Adult Males ◽  
Elite Level ◽  
Moderate Effect ◽  
Effect Of Age ◽  
Isokinetic Peak Torque

Background/aimThe purpose of this study was to compare the isokinetic peak torque profiles from the quadriceps and hamstrings muscles during concentric and eccentric contractions in elite Brazilian soccer players across different field positions and age categories. Our hypothesis was that soccer players from different field positions are subjected to different ageing-related effects on their isokinetic peak torque.MethodsThis is a retrospective study based on professional elite-level soccer players between the years 2009 and 2019. It included 570 adult males who played for at least 5 years on first or second Brazilian divisions. Playing positions were divided as: goalkeepers, defenders, sidebacks, midfielders and forwards. Age categories were also divided as: G1 (17–20 years old), G2 (21–24 years old), G3 (25–28 years old), G4 (29–32 years old) and G5 (33 years old or more).ResultsThe results indicate a moderate effect of age (F(4545)=8.197; p<0.001; η2=0.057) and a small effect of playing position (F(4545)=2.993; p<0.05; η2=0.021) on torque of concentric extensors; mainly from midfielders and goalkeepers with 29 years or more.ConclusionsSoccer players from different field positions are subjected to different ageing related effects on their muscular performance during their career special attention should be given to these players to avoid reduction in physical performance.

scholarly journals Concentric and eccentric isokinetic hamstring injury risk among 582 professional elite soccer players: a 10-years retrospective cohort study

2020 ◽  
Vol 6 (1) ◽  
pp. e000868
Author(s):  
Ricardo Lima Burigo ◽  
Robson Dias Scoz ◽  
Bruno Mazziotti de Oliveira Alves ◽  
Rubens Alexandre da Silva ◽  
Cesar Augusto Melo-Silva ◽  
...  
Keyword(s):  
Regression Analysis ◽  
Cohort Study ◽  
Retrospective Cohort Study ◽  
Retrospective Cohort ◽  
Injury Risk ◽  
Peak Torque ◽  
Soccer Players ◽  
Complex Data ◽  
Isokinetic Test ◽  
Clinical Records

Background/AimDifferent authors have tried to correlate the peak isokinetic torque values with the incidence of soccer match injuries. However, due to the wide variety of assessment testing protocols, such an inference becomes difficult. This study aimed to verify the capacity of an isokinetic test to establish injury risk reference values for hamstring strain injuries.MethodsA retrospective cohort study based on isokinetic data and clinical records from the last 10 years was conducted in 582 Brazilian elite-professional soccer players, who were subjected to the same isokinetic test protocol, machine, and tester. A Multivariate Logistic Regression Analysis for Complex Data Sampling was used to generate injury risk statistical indexes.ResultsMultivariate regression analysis of both legs provided important data to identify the cut-off values of Concentric Peak Torque (181.82 Newton/*metres), Concentric Work (236.23 watts) and Concentric Power (130.11 joules).ConclusionsThe injury risk indexes indicate that an increase of just one Newton unit in CPT (Concentric Peak Torque) and CJ (Concentric Power) above those cut-off values, can reduce the risk of future injuries by 2% and 2.7%, respectively.

The Covariate Influence of Muscle Mass on Isokinetic Peak Torque in High School Wrestlers

1995 ◽  
Vol 7 (2) ◽  
pp. 176-182 ◽  
Author(s):  
Terry J. Housh ◽  
Jeffrey R. Stout ◽  
Dona J. Housh ◽  
Glen O. Johnson
Keyword(s):  
High School ◽  
Muscle Mass ◽  
Skeletal Muscle Mass ◽  
Peak Torque ◽  
Leg Extension ◽  
Free Weight ◽  
Age Related ◽  
Versus Peak ◽  
Flexion And Extension ◽  
Isokinetic Peak Torque

The purpose of this investigation was to examine the covariate influence of estimated muscle mass on age-related increases in isokinetic peak torque for flexion and extension of the forearm and leg in high school wrestlers. One hundred thirteen high school wrestlers volunteered to be measured for strength at 30, 180, and 300°·s−1. Underwater weighing was performed to determine body composition characteristics, and the anthropometric equation of Martin et al. (10) was used to estimate total skeletal muscle mass (MM). There were significant (p < .05) relationships (r = .19 to .37) for age versus peak torque covaried independently for fat-free weight (FFW) and MM for forearm flexion at 30, 180, and 300°·s−1; forearm extension at 180 and 300°·s−1; and leg extension at 30, 180 and 300°·s−1. The results of this study indicated that there was no increase across age in MM per unit of FFW, and the age-related increases in peak torque in high school wrestlers could not be fully accounted for by changes in MM.

scholarly journals Muscle Strength Variations of Knee Joint Muscles in Elite Female Handball Players after Pre-Season Conditioning

2018 ◽  
Vol 63 (1) ◽  
pp. 105-115 ◽  
Author(s):  
Zuzana Gonosova ◽  
Petr Stastny ◽  
Jan Belka ◽  
Lucia Bizovska ◽  
Michal Lehnert
Keyword(s):  
Muscle Strength ◽  
Elite Athletes ◽  
Body Height ◽  
Peak Torque ◽  
Knee Extension ◽  
Training Process ◽  
Strength Performance ◽  
Risk Of Injury ◽  
Previous Season ◽  
Isokinetic Peak Torque

Abstract Monitoring seasonal variations in strength performance and the relative risk of injury indicators related to strength of hamstring (H) and quadriceps (Q) in female elite athletes is beneficial for the training process. The aim of this study was to examine and compare the level of muscle strength, the conventional ratio (HCONC/QCONC) as well as two functional and strength ratios reflecting the movement of knee extension (HECC/QCONC) and flexion (HCONC/QECC), and the bilateral percentage strength deficit (BSD) in elite female handball players. The concentric and eccentric isokinetic peak torque was measured at an angular velocity of 60°/s on three occasions (in-season cessation, 4 weeks of rest followed by 4 weeks of individual conditioning and 6 weeks of group conditioning) in eleven female handball players (age: 23.1 ± 3.5 years, body height: 1.73 ± 0.6 m). According to ANOVA results, the BSD of H muscles in the concentric mode decreased between the in-season cessation and the end of the pre-season, and HCONC/QCONC increased at the beginning of the pre-season and at the end of the pre-season in comparison with inseason cessation measurement. The effect size analyses showed that the off-season rest followed by 10 weeks of the conditioning programme increased Q and H strength in comparison with the previous season with a large effect. Coaches should include progressive conditioning in the pre-season phase to decrease the bilateral strength deficit and to support further conditioning development.

Sign in / Sign up

Export Citation Format

Share Document