Ankle Joint Function, Ankle Proprioception, Muscle Strength, Youth Sports Injury Prevention
Conditions
Keywords
muscle strenght, ankle proprioceotion
Brief summary
This observational cross-sectional study aims to profile ankle isometric strength and proprioception in 9-10-year-old junior ice hockey players and to compare these outcomes and limb symmetry indices with age-matched non-athlete children. Ankle isometric muscle strength is assessed using a handheld dynamometer, and ankle proprioception is evaluated using a digital inclinometer. Measurements are performed bilaterally for dominant and non-dominant limbs. Group comparisons and limb symmetry analyses are conducted to identify potential neuromuscular differences related to sports participation.
Interventions
None listed
Sponsors
Study design
Eligibility
Inclusion criteria
* Children aged 9 to 10 years. * For the ice hockey group: regular participation in organized junior ice hockey training. * For the control group: no participation in organized sports or structured athletic training. * Ability to understand and follow test instructions. * Written informed consent obtained from parents or legal guardians
Exclusion criteria
* History of lower extremity injury within the past 6 months. * Previous ankle or lower limb surgery. * Presence of neurological, musculoskeletal, or balance disorders that could affect ankle strength or proprioception. * Current pain or injury affecting lower extremity function. * Any medical condition that would limit safe participation in the assessments.
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Ankle Isometric Strength | Single assessment session | Ankle isometric muscle strength of the dominant and non-dominant limbs measured using a hand-held dynamometer (Lafayette Manual Muscle Testing System). Peak force values are recorded for dorsiflexion, plantar flexion, inversion, and eversion. |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Ankle Proprioception | Single assessment session | Ankle joint proprioception assessed bilaterally for the dominant and non-dominant limbs using a joint position sense test with a digital inclinometer. Proprioceptive accuracy is expressed as absolute error in degrees between the target and reproduced ankle joint position. |