Torque-angle-velocity Relationships and Muscle Performance of Professional and Youth Soccer Players

Mazuquin, Bruno; Bela, Laís Faganello Dela; Pelegrinelli, Alexandre Roberto Marcondes; Dias, João Marcos Domingues; Carregaro, Rodrigo Luiz; Moura, Filipe A.; Selfe, James; Richards, Jim; Brown, Lee E.; Cardoso, Jefferson Rosa

doi:10.1055/s-0042-108199

Cited by 7 publications

(7 citation statements)

References 21 publications

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“…The D'Agostino-Pearson normality test indicated that in some angles the SPM violates the normality condition, and thus a twosample non-parametric test was used to compare the torque curves between athletes and non-athletes [15]. The results in ▶Fig.…”

Section: Resultsmentioning

confidence: 99%

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Hip Adduction and Abduction Torque-angle Curve Characterization of Speed Skating Athletes

et al. 2020

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Speed skating is a cyclic sport which involves the hip abductor muscles, impelling the participant forwards, and adductor muscles, in the recovery phase and decelerating the abduction movement eccentrically. This paper has the objective of describing and comparing the abduction/adduction torque-angle curves of speed skating athletes (N=10) with a group of non-practitioners young participants (N=10). Both groups presented similar peak torques and electromyography patterns for tensor fascia lata, gluteus medius, long adductor and adductor magnus. However, athletes showed higher torque-angle curve integral and abduction and adduction peak torques at different hip angles than the control group. These findings suggest an adaptation of their musculotendon actuators and a better capacity to generate mechanical work and power during a propulsion-recovery cycle.

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Section: Resultsmentioning

confidence: 99%

“…Only one, slow angular velocity (20 °/s) was analyzed. It has been reported that the angular velocity of the isokinetic test has a major impact on the torque-angle curves [2,15]. No curve fitting technique was tested to characterize the torque-angle curve features [17], which could reveal new unobserved differences between CG and AG.…”

Section: Discussionmentioning

confidence: 99%

Hip Adduction and Abduction Torque-angle Curve Characterization of Speed Skating Athletes

et al. 2020

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“…All reps were used for the analysis and interpolated for all three angular velocities, in accordance with the duration and values of the average curves for each participant. To better describe surface maps, the entire ROM of extension-flexion motion was considered and polynomial regression curve was plotted for acceleration, constant speed (load range), and deceleration stages of the motion [15,21]. 3D surface maps used Z-axis for the torque value, Y-axis for the angle value, and X-axis for the velocity value.…”

Section: Three-dimensional Surface Mapsmentioning

confidence: 99%

“…Isolated analyses of peak torque, mean power, or total work parameters do not provide insights into the torque-angular velocity relationship of muscle strength. Although this relationship represents the dynamic behavior of the muscle, it also allows for a comprehensive analysis of functional capacity by revealing the lengthening-contraction, and lengthening-velocity relationships [21]. The torque and angle relationship is affected by increasing speed in dynamic evaluations [22].…”

Section: Introductionmentioning

confidence: 99%

Knee extensor/ﬂexor muscle torque and jump performance in male volleyball players: effect of experience and torque-angle-velocity relationships

2021

JOMH

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Background and objective: There are many studies that have examined the differences in isokinetic strength performance differences in athletes; however, observing these angular velocity-dependent differences on surface maps is a very practical and useful application. The aim of this study was to determine the angular velocity-dependent isokinetic knee extensor/ﬂexor muscle strength and jump performance and to compare the test results and 3D torque-angle-velocity surface maps of amateur and professional volleyball players. Materials and methods: We included 25 well-trained male volleyball players (14 professionals and 11 amateurs) with a mean age of 21.8 ± 2.6 years (range 18--27 years) in this cross-sectional study. The dominant knee concentric muscle contractions were analyzed at 300, 120, and 60◦/s angular velocities to determine peak torque (PT), total work (TW), mean power (MP), angle of peak torque (APT), and hamstring-to-quadriceps torque ratio (H:Q). Vertical jump performance was assessed using countermovement jump (CMJ) test. These data were processed using a MATLAB algorithm for constructing the 3D torque-angle-velocity surface maps. Results and conclusions: Signiﬁcant differences were identiﬁed for extensor--ﬂexor PT between PRO and AT at 300 and 120◦/s (p < 0.05). Moreover, there were signiﬁcant differences between groups for MP and APT at 300 and 120◦/s for TW at all velocities. CMJ test results were signiﬁcantly different between the groups (p < 0.05). Amateur and professional male volleyball players showed different concentric knee strengths across isokinetic velocities and different eccentric strengths on CMJ test. 3D surface maps can play an important role in the comparative analysis of athletes with different sports backgrounds or in performance analyses when tracking individual development and provide a detailed and understandable perspective in revealing differences. It can also be of help in detection of possible deﬁcits in muscle strength and load range before and after potential injuries.

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“…These outcome variables may provide additional information, such as the time for reaction and the ability to maintain the velocity, which could aid in clinical evaluation and implementation of specific rehabilitation protocols in order to optimize treatment. 17,18 Qualitative analysis of isokinetic output is another form of assessment that uses surface maps of the torque-angle-velocity relationship (TAV 3D ). It can provide a more comprehensive understanding of dynamic behavior of a muscle compared to static assessments, due to focusing on length-tension and length-velocity relationships.…”

Section: Introductionmentioning

confidence: 99%

Isokinetic Muscle Performance After Anterior Cruciate Ligament Reconstruction: A Case-Control Study

Pelegrinelli

Guenka

Dias

et al. 2018

Intl J Sports Phys Ther

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Background and Purpose: Knee muscle strength deficits have been reported in individuals who have undergone anterior cruciate ligament reconstruction (ACLR). Isokinetic testing is a valid way to assess muscle strength. Some isokinetic variables, including the range of motion in the phases to attain a specific velocity, load range (sustained specific velocity), time to achieve deceleration, and qualitative analysis of the torque-angle velocity relationship, may contribute to understanding recovery of these individuals after surgery. Thus, the purpose of this study was to compare the load range (LR), time to attain velocity (TTAV), deceleration time (DT) phases, total range of motion (ROM), peak torque/body mass (PT/BM), angle of peak torque (AngPT) during LR and torque-angle-velocity relationships (TAV 3D ) between post ACLR and matched control subjects. Study design: Case-control.Methods: Seven men who underwent ACLR and seven matched controls were evaluated from four to six months after surgery. Testing was performed on a Biodex System 4 isokinetic dynamometer in concentric mode at 60, 120 and 300 °/s, for knee flexion and extension.Results: Statistically significant differences were seen for extension ROM at 60 °/s where ROM was greater in the control group. PT/BM for extensors was also significantly greater in controls by 20 % compared to ACLR at 60 and 120 °/s. PT/BM for flexors was significantly greater for controls at 60 °/s (~15 %). TAV 3D showed differences in torque and, specifically, the control group sustained knee flexion torque for a greater range of motion when compared to the ACLR group. Conclusion:The ACL group presented with lower ROM and PT/BM, therefore exhibiting worse muscle performance in comparison to the control group.

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Torque-angle-velocity Relationships and Muscle Performance of Professional and Youth Soccer Players

Cited by 7 publications

References 21 publications

Hip Adduction and Abduction Torque-angle Curve Characterization of Speed Skating Athletes

Hip Adduction and Abduction Torque-angle Curve Characterization of Speed Skating Athletes

Knee extensor/ﬂexor muscle torque and jump performance in male volleyball players: effect of experience and torque-angle-velocity relationships

Isokinetic Muscle Performance After Anterior Cruciate Ligament Reconstruction: A Case-Control Study

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