Association Between Isokinetic Knee Strength Characteristics and Single-Leg Hop Performance In Healthy Young Participants

Konstantinos Vassis; Asimakis Kanellopoulos; Savvas Spanos; Dimitra Kakolyri; Aggeliki Loukopoulou; Vasiliki Papanikolakou; Dimitrios Aivaliotis; Ioannis Poulis

doi:10.1016/j.jcm.2022.05.003

Association Between Isokinetic Knee Strength Characteristics and Single-Leg Hop Performance In Healthy Young Participants

J Chiropr Med. 2023 Mar;22(1):27-34. doi: 10.1016/j.jcm.2022.05.003. Epub 2022 Jul 23.

Authors

Konstantinos Vassis¹, Asimakis Kanellopoulos², Savvas Spanos^{1

2}, Dimitra Kakolyri², Aggeliki Loukopoulou², Vasiliki Papanikolakou², Dimitrios Aivaliotis², Ioannis Poulis¹

Affiliations

¹ Human Performance and Rehabilitation Laboratory, University of Thessaly, Lamia, Greece.
² Faculty of Physiotherapy, University of Thessaly, Lamia, Greece.

Abstract

Objective: The purpose of this study was to determine the extent to which the mean peak moment (MPM) of knee flexors and extensors could predict performance in a group of healthy individuals.

Methods: Eighty-four healthy individuals-32 men and 52 women (mean age, 22.1 ± 3 years; range, 18-35 years)-participated in this study. Isokinetic unilateral concentric knee flexor and extensor MPM was assessed isokinetically at angular velocities of 60°/s and 180°/s. Functional performance was assessed using the single hop of distance (SHD).

Results: Positive moderate to good statistically significant correlations (r = .636 to r = .673) were found between knee flexor and extensor MPM at 60°/s and 180°/s for the SHD test. Knee flexor and extensor MPMs are strong predictors for the SHD test at 60°/s and 180°/s (R² = .40 to R² = .45).

Conclusion: Knee flexor and extensor strength was substantially correlated with SHD.

Keywords: Knee Joint; Muscle Strength; Physical Functional Performance.