Are the Parameters of Novel Two-Point Force-Velocity Model Generalizable in Leg Muscles?

Saša Đurić, Vladimir Grbić, Milena Živković, Nikola Majstorović and Vedrana Sember
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Saša Đurić: Faculty of Sports, University of Ljubljana, 1000 Ljubljana, Slovenia
Vladimir Grbić: Faculty of Sport and Physical Education, University of Belgrade, 1000 Ljubljana, Slovenia
Milena Živković: Faculty of Sport and Physical Education, University of Belgrade, 1000 Ljubljana, Slovenia
Nikola Majstorović: Faculty of Sport and Physical Education, University of Belgrade, 1000 Ljubljana, Slovenia
Vedrana Sember: Faculty of Sports, University of Ljubljana, 1000 Ljubljana, Slovenia

IJERPH, 2021, vol. 18, issue 3, 1-11

Abstract: The two-point force-velocity model allows the assessment of the muscle mechanical capacities in fast, almost fatigue-free conditions. The aim of this study was to investigate the concurrent validity of the two-point parameters with directly measured force and power and to examine the generalization of the two-point parameters across the different functional movement tests of leg muscles. Twelve physically active participants were tested performing three functional lower limb maximal tests under two different magnitudes of loads: countermovement jumps, maximal cycling sprint, and maximal force under isokinetic conditions of the knee extensors. The results showed that all values from the two-point model were higher than the values from the standard tests ( p < 0.05). We also found strong correlations between the same variables from different tests (r ≥ 0.84; p < 0.01), except for force in maximal cycling sprint, where it was low and negligible (r = −0.24). The results regarding our second aim showed that the correlation coefficients between the same two-point parameters of different lower limb tests ranged from moderate to strong (r −0.47 to 0.72). In particular, the relationships were stronger between power variables than between force variables and somewhat stronger between standard tests and two-point parameters. We can conclude that mechanical capacities of the leg muscles can be partially generalized between different functional tests.

Keywords: exercise; resistance; performance; biomechanics; two-point model; force-velocity relationship (search for similar items in EconPapers)
JEL-codes: I I1 I3 Q Q5 (search for similar items in EconPapers)
Date: 2021
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