Association Between Knee Isokinetic Testing and Lower Limb Functional Performance and Limb Symmetry

Association Between Knee Isokinetic Testing and Lower Limb Functional Performance and Limb Symmetry

This study aimed to evaluate the association between the isokinetic knee strength and/or proprioception performance with the functional performance on the functional Hop-tests and Y-balance test.

This study included 20 healthy individuals who performed an isokinetic assessment of knee proprioception (joint position sense, JPS and threshold to detection of passive motion, TDPM) and flexors/extensors strength. At the same time, they performed a functional testing consisting of three Hop-tests (single, triple and cross-over) and the Lower Quarter Y-Balance Test (YBT-LQ). We tested the correlation between the isokinetic and functional performances, and limb symmetry indexes.

Inclusion Criteria:

• individuals under 45 years of age who performed at least 4 hours of physical activity per week.

Exclusion Criteria:

• individuals unable to perform isokinetic muscle tests
• individuals with a current or recent lower limb injury with time loss from sport participation within the previous month
• individuals with previous severe knee injury (eg. Severe ligament tear, knee fracture)
• individuals taking medications with potential balance/coordination side effects.