Reliability of Concentric, Eccentric and Isometric Knee Extension and Flexion when using the REV9000 Isokinetic Dynamometer

• Authors: Alberto César Pereira de Carvalho Froufe Andrade , Paolo Caserotti , Carlos Manuel Pereira de Carvalho , Eduardo André de Azevedo Abade , António Jaime da Eira Sampaio
• Languages of publication: EN

Abstracts

EN

The aim of this study was to assess the reliability of isokinetic and ISO knee extensor and flexor muscle strength when using the REV9000 (Technogym) isokinetic dynamometer. Moreover, the reliability of several strength imbalance indices and bilateral ratios were also examined. Twenty-four physically active healthy subjects (age 23±3 years) underwent three testing sessions, two on the same day and a third, 7 days later. All sessions proceeded in the same order: five concentric contractions at 60ºs-1 followed by an isometric contraction (5 seconds) and five eccentric contractions (60ºs-1). The results of this study showed a high reproducibility in eccentric (0.95-0.97), concentric (0.95- 0.96) and isometric (0.93-0.96), isokinetic strength for knee extensor and flexor muscles, thus indicating that the REV9000 isokinetic dynamometer can be used in future sports performance studies. A low-to-moderate reliability was found in the isokinetic strength bilateral ratios while the Hamstring:Quadricep concentric ratio showed moderate reliability. The highest reliability (>0.90) was observed in the dynamic control ratio (Hamstring eccentric:Quadricep concentric) which consequently confirms that it is a more valid indicator for imbalanced reciprocal parameters and can be used in rehabilitation and sports medicine.

Keywords

EN

reproducibility; quadriceps; hamstring; peak torque; imbalance ratios; isokinetics

• Publisher: De Gruyter Open
• Journal: Journal of Human Kinetics
• Year: 2013
• Volume: 37
• Issue: 1
• Pages: 47-53

Dates

published

1 - 06 - 2013

online

05 - 07 - 2013

Contributors

author

Alberto César Pereira de Carvalho Froufe Andrade

• Research Center in Sports Science, Health and Human Development (CIDESD), Portugal
• High Institute of Maia (ISMAI), Portugal, Adress: ISMAI - Instituto Superior da Maia. Av. Carlos Oliveira Campos - Castelo da Maia. 4475-690 Avioso S. Pedro Phone: [phone] ; Fax: [phone]

author

Paolo Caserotti

• University of Southern Denmark, Institute of Sports Science and Clinical Biomechanics

author

Carlos Manuel Pereira de Carvalho

• Research Center of Sports Science, Health and Human Development (CIDESD)
• High Institute of Maia (ISMAI), Portugal

author

Eduardo André de Azevedo Abade

• Research Center of Sports Science, Health and Human Development (CIDESD)
• University of Trás-os-Montes e Alto Douro (UTAD), Portugal

author

António Jaime da Eira Sampaio

• Research Center of Sports Science, Health and Human Development (CIDESD)
• University of Trás-os-Montes e Alto Douro (UTAD), Portugal

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Identifiers

DOI

10.2478/hukin-2013-0024