Feasibility of the two-point method for assessing the force-velocity relationship during lower-body and upper-body isokinetic tests
Date
2019-06Author
Janicijevic, Danica
García-Ramos, Amador
Knezevic, Olivera M.
Mirkov, Dragan M.
Publisher
RoutledgeDescription
Artículo de publicación ISIMetadata
Show full item recordAbstract
This study aimed to (1) evaluate the shape of the force-velocity (F-V) relationship obtained from
different muscles, (2) explore the concurrent validity of the two-point method with respect to the
multiple-point method, (3) evaluate whether the F-V relationship can discriminate between muscle
groups and genders, and (4) explore the generalisability of the same F-V relationship parameters
(maximal force [F0], maximal velocity [V0]), and maximal power [P0]) between different tasks. The
F-V relationship of 22 physically active participants (12 women) were tested during knee extension,
knee flexion, elbow extension and elbow flexion through the multiple- (eight velocities: 30-60-90-120-
150-180-210-240º/s) and two-point (two velocities: 60–180º/s) methods. The findings revealed (1) highly
linear F-V relationships (r ≥ 0.893), (2) high concurrent validity of the two-point method for F0, but lower
for V0 and P0, (3) the outcomes of both methods were sensitive to the muscle groups (higher for knee
muscles) and gender (higher for men), and (4) the magnitude of the same F-V parameters were poorly
correlated between different tasks (median r < 0.1). These results support the two-point method as
a valid and sensitive procedure for determining the maximal capacities of the muscles to produce F, but
not V, during isokinetic tests.