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PHYSIOLOGICAL AREA
Medicina dello Sport 2020 March;73(1):11-20
DOI: 10.23736/S0025-7826.20.03605-4
Copyright © 2020 EDIZIONI MINERVA MEDICA
language: English, Italian
Correlation analysis between jump performance and dynamometer measures
Luis LLURDA-ALMUZARA 1, Albert PÉREZ-BELLMUNT 1 ✉, Carles LOPEZ-DE-CELIS 2, 3, Rosa CABANAS-VALDÉS 2, Sara ORTIZ 1, Ramón AIGUADÉ 4
1 Unit of Anatomy, Department of Basic Sciences, Universitat Internacional de Catalunya, Barcelona, Spain; 2 Department of Physical Therapy, Universitat Internacional de Catalunya, Barcelona, Spain; 3 Fundaciò Institut Universitari per a la Recerca a l’Atenció Primària de Salut Jordi Gol i Gurina (IDIAPJGol), Barcelona, Spain; 4 Department of Nursing and Physiotherapy, Universitat de Lleida, Lleida, Spain
BACKGROUND: Measuring lower limb strength is crucial in order to evaluate training and prevention programs. The purpose of this study is to explore a possible relationship between maximal isometric lower limb strength and jump performance.
METHODS: Thirty healthy active subjects (33% females) participated in this cross-sectional correlation study. It was carried out on a functional anatomy laboratory. Maximal isometric strength tests of twelve lower limb movements and a countermovement jump. Isometric strength measured by a hand-held dynamometer and a countermovement jump measured by a mobile application. Moreover, a total maximal isometric strength was calculated as an average of all dynamometer measures.
RESULTS: Pearson correlation coefficient was calculated to determine a possible correlation between all dynamometer measures and jump performance. Level of significance was set at α=0.05. All dynamometer measures were significantly correlated with jump performance (P<0.05; R2=0.66).
CONCLUSIONS: This study suggests a high correlation between maximal isometric measures and jump performance. The use of a mobile application is cheaper, quicker, and easier than the use of a hand-held dynamometer. Results from this study support the use of a mobile application as a good tool to measure the strength capacity of the lower limb.
KEY WORDS: Muscle strength; Muscle strength dynamometer; Isometric contraction; Athletic performance