Validity and Reliability of Isometric-Bench for Knee Isometric Assessment

Johnny Padulo, Nebojša Trajković, Drazen Cular, Zoran Grgantov, Dejan M. Madić, Rosa Di Vico, Alfonso Traficante, Larion Alin, Luca Paolo Ardigò and Luca Russo
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Johnny Padulo: Department of Biomedical Sciences for Health, Università degli Studi di Milano, 20133 Milan, Italy
Nebojša Trajković: Faculty of Sport and Physical Education, University of Novi Sad, 21000 Novi Sad, Serbia
Drazen Cular: Faculty of Kinesiology, University of Split, 21000 Split, Croatia
Zoran Grgantov: Faculty of Kinesiology, University of Split, 21000 Split, Croatia
Dejan M. Madić: Faculty of Sport and Physical Education, University of Novi Sad, 21000 Novi Sad, Serbia
Rosa Di Vico: Italian Society of Posture and Gait Research, 8100 Caserta, Italy
Alfonso Traficante: Department of Biotechnology and Applied Clinical Science, University of L’Aquila, 67100 L’Aquila, Italy
Larion Alin: Faculty of Physical Education, Ovidius University of Constanta, 900029 Constanta, Romania
Luca Paolo Ardigò: School of Exercise and Sport Science, Department of Neurosciences, Biomedicine and Movement Sciences, University of Verona, 37131 Verona, Italy
Luca Russo: Department of Biotechnology and Applied Clinical Science, University of L’Aquila, 67100 L’Aquila, Italy

IJERPH, 2020, vol. 17, issue 12, 1-8

Abstract: 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.

Keywords: concurrent validity and reliability; field test; isometric assessment; testing (search for similar items in EconPapers)
JEL-codes: I I1 I3 Q Q5 (search for similar items in EconPapers)
Date: 2020
References: View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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