Abstract
Background
Bilateral symmetry evaluation in lower limb is used for injury prevention, and is
an indicator of returning to post-injury activity. The aim of present study was to
investigate the effect of different angular velocities on asymmetry of the hamstring-to-quadriceps
strength ratio.
Method
Isokinetic concentric hamstring to quadriceps (H:Q) peak torque ratio of the 27 male
and female professional basketball players was measured at seven angular velocities
(60, 90, 120, 150, 180, 180, 240, 300 deg s−1) on both dominant and non-dominant legs with Biodex Isokinetic Dynamometer. Repeated measure analysis of variance was used to assess the effects of angular velocity
and limb side on our outcomes (p ≤ 0.05).
Results
The results showed that with increasing angular velocity, the ratio of hamstrings
to quadriceps increases (p = 0.001). There was no difference between dominant and non-dominant limbs in the
H:Q peak torque ratio (p = 0.254). In addition, velocity of measurement did not affect the bilateral asymmetry
of peak torque ratio of the H:Q of both sides (p = 0.852).
Conclusions
Based on the results of this study, it can be concluded that measurement velocity
does not affect the bilateral asymmetry of the H:Q peak torque ratio of the dominant
and non-dominant limbs. In clinical assessments of H:Q bilateral asymmetry, we suggest
that physical trainer can assess bilateral asymmetry of H:Q with arbitrary angular
velocities.
Keywords
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Article info
Publication history
Published online: June 01, 2022
Accepted:
May 9,
2022
Received in revised form:
March 22,
2022
Received:
August 11,
2021
Identification
Copyright
© 2022 Elsevier B.V. All rights reserved.
