About this trial
This study aims to evaluate the validity and reliability of clinically used Calf Raise Test parameters (collected with the "the Calf Raise App") between patients with Lateral Ankle Sprain or Achilles Tendon Repair and healthy controls.
Eligibility criteria
This trial accepts healthy volunteersQualifiers
Signed informed consent
Aged 18-65 years
German or English speaking
Disqualifiers
Chronic Ankle Instability (defined by symptoms such as giving way, perceived instability and at least one LAS within the last 6 months)
Previous ATR
Other lower limb injury and/or surgery in the last year (e.g. fractures, ligament reconstructions or other conditions resulting in ≥ 6 months of sports inactivity)
Impaired motor function of the lower limb due to neurovascular or neurological diseases
Trial design
Single group
Treatments tested in this trial
Calf Raise Test
Other interventionThe study participants perform three single-leg CRTs (tracked by the CRT App) in a fixed sequence: concentric power, eccentric-concentric power and endurance. ATRC/LAS Individuals start with the affected leg, healthy participants with the dominant leg.
Treatment groups
Trial outcomes
Primary outcomes
Calf Raise Test (CRT)
The CRT (evaluated by the use of the CRT App) yields three different variables of interest: * Concentric power CRT: peak power (W) during the ascending phase * Eccentric-concentric power CRT: peak power (W) during the ascending phase * Endurance CRT: number of repetitions (n), total positive work (W), and total positive displacement (cm)
Secondary outcomes
Patient-reported outcome measures (PROM) - FAOS
For ATR patients, LAS patients and healthy controls \_ specific score I: Foot and Ankle Outcome Score (FAOS). This PROM consists of specific items, which produce a unique numeric score as unit measurement (outcome measure).
Patient-reported outcome measure (PROM) - ATRS
For ATR patients and healthy controls\_ specific score II: Achilles Tendon Total Rupture Score (ATRS). This PROM consists of specific items, which produce a unique numeric score as unit measurement (outcome measure).
Patient-reported outcome measure (PROM) - FFI
For LAS patients and healthy controls \_ specific score III: Functional Foot Index (FFI). This PROM consists of specific items, which produce a unique numeric score as unit measurement (outcome measure).
Patient-reported outcome measure (PROM) - FAAM
For LAS patients and healthy controls \_ specific score IV: Foot and Ankle Ability Measurement (FAAM). This PROM consists of specific items, which produce a unique numeric score as unit measurement (outcome measure).
Locations
Sponsors and contacts
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