| Autor: |
Alves BMO; Masters and Doctoral Program in Physiotherapy, University City of Sao Paulo (Unicid), Sao Paulo 03071-000, Brazil.; Department of Physical Therapy and Biomechanics, Arsenal Football Club, London N7-7AJ, UK., Scoz RD; Masters and Doctoral Program in Physiotherapy, University City of Sao Paulo (Unicid), Sao Paulo 03071-000, Brazil., Burigo RL; Masters and Doctoral Program in Physiotherapy, University City of Sao Paulo (Unicid), Sao Paulo 03071-000, Brazil., Ferreira IC; Masters and Doctoral Program in Physiotherapy, University City of Sao Paulo (Unicid), Sao Paulo 03071-000, Brazil., Ramos APS; Physiotherapy Department, University of South of Santa Catarina (Unisul), Sao Jose 88137-270, Brazil., Mendes JJB; Laboratory of Physical and Functional Assessment (LAFF), Interdisciplinary Center of Investigation Egas Monis (CiiEM), Caparica, 2829-511 Setubal, Portugal., Ferreira LMA; Laboratory of Physical and Functional Assessment (LAFF), Interdisciplinary Center of Investigation Egas Monis (CiiEM), Caparica, 2829-511 Setubal, Portugal., Amorim CF; Masters and Doctoral Program in Physiotherapy, University City of Sao Paulo (Unicid), Sao Paulo 03071-000, Brazil.; Laboratory of Physical and Functional Assessment (LAFF), Interdisciplinary Center of Investigation Egas Monis (CiiEM), Caparica, 2829-511 Setubal, Portugal.; Lab Corinthians R9, Sport Club Corinthians Paulista, Sao Paulo 03828-000, Brazil.; Laboratoire de Recherche BioNR, Université du Quebec, Saguenay, QC G7H-2B1, Canada. |
| Abstrakt: |
Isokinetic tests have been highly valuable to athletic analysis, but their cost and technical operation turn them inaccessible. The purpose of this study was to verify the correlation between unilateral countermovement jump variables and isokinetic data. Thirty-two male professional soccer players were subjected to the isokinetic testing of both knee extensors and flexors in concentric and eccentric muscle contractions. They also executed unilateral countermovement vertical jumps (UCMJ) to compare maximum height, ground reaction force, and impulse power with isokinetic peak torque. Data analysis was conducted through Pearson correlation and linear regression. A high correlation was found between dominant unilateral extensor concentric peak torque and the UCMJ maximum height of the dominant leg. The non-dominant leg jump showed a moderate correlation. No other variable showed statistical significance. Linear regression allowed the generation of two formulae to estimate the peak torque from UCMJ for dominant and non-dominant legs. Although few studies were found to compare our results, leading to more studies being needed, a better understanding of the unilateral countermovement jump may be used in the future as a substitute to the expensive and technically demanding isokinetic testing when it is unavailable, allowing the assessment of lower limb physical asymmetries in athletic or rehabilitation environments. |
