Chronic Ankle Instability
Conditions
Keywords
ankle instability, muscle strength, quadriceps, hamstrings, maximal voluntary isometric contraction
Brief summary
Patients with chronic ankle instability (CAI) show biomechanical and neuromuscular alterations during the performance of functional movements not only at the ankle joint level, but also in more proximal joints and segments. Few studies have been conducted to investigate the effects of chronic ankle instability on neuromuscular control at the knee joint level. The aim of this study is to investigate whenther abnormalities exists in maximal and sub-maximal isometric muscle strength expression in patients with CAI.
Interventions
OTHERChronic ankle instability
Persistent condition of ankle instability after a first ankle sprain episode.
Sponsors
Istituto Ortopedico Rizzoli
Study design
Observational model
OTHER
Time perspective
CROSS_SECTIONAL
Eligibility
Sex/Gender
ALL
Age
18 Years to 40 Years
Healthy volunteers
Yes
Inclusion criteria
* age between 18 and 40 years * chronic ankle instability * physically active individuals
Exclusion criteria
* sedentary behaviour * previous injuries or surgeries to the lower limbs * neurological disorders
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Forces exerted by knee extensor and flexor muscles | Day 1 | The forces (N) exerted by knee extensor and flexor muscles will be assessed by means of a dynamometer during maximal and submaximal isometric muscle contractions. |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Knee extensor and flexor muscles activations | Day 1 | Knee extensor and flexor muscles activations (mV) during the maximal and submaximal isometric contractions will be recorded by means of surface electrodes for electromyography. |
Countries
Italy
Outcome results
None listed