Tendon Injuries
Conditions
Brief summary
The study will be looking at acute changes in Achilles tendon properties and changes in a vertical single leg hop following an exercise intervention. The three exercise interventions will be randomized and take place on separate days 1 week apart. The three exercise interventions are AAROM, slow load, and plyometrics.
Detailed description
The purpose of the study is to determine if there are acute changes in Achilles tendon properties and changes in performance based on what tendon exercise intervention is being used. About 70 people will take part in this research.
Interventions
OTHERAAROM
AAROM with knee to wall exercise, 3x30 reps
OTHERSlow Load
Single leg heel raise, 3x10 reps
OTHERPlyometric
Double leg 5 inch wall hops, 3x10 sec
Sponsors
University of South Dakota
Study design
Allocation
RANDOMIZED
Intervention model
CROSSOVER
Primary purpose
TREATMENT
Masking
SINGLE (Investigator)
Masking description
The researchers collecting data will be blinded to the intervention provided
Eligibility
Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
Yes
Inclusion criteria
* College student
Exclusion criteria
* Unable to complete interventions
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Achilles Tendon Creep | immediately | A myotonometer will measure creep in De. |
| Achilles Tendon Stiffness | immediately | A myotonometer will measure the stiffness in N/m. |
| Achilles Tendon Natural Oscillation | immediately | A myotonometer will measure the natural oscillation frequency in Hz. |
| Achilles Tendon Logarithmic Decrement | immediately | A myotonometer will measure logarithmic decrement, which is a measure of elasticity. |
| Achilles Tendon Mechanical Stress Relaxation Time | immediately | A myotonometer will measure mechanical stress relaxation time in ms. |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Single-leg drop jump vertical | immediately | Single-leg vertical drop jump from 4-inch box with knee locked in extension will be measured in cm. A higher jump is considered better. |
| Reactive Strength Index | immediately | Reactive Strength Index will be measured as an AU, the higher the better. |
| Flight Time | immediately | Flight time will be measured in ms, the higher the better. |
| Contact Time | immediately | Contact time will be measured in ms, the lower the better. |
| Limb Stiffness | immediately | Limb stiffness will be measured in kN/m, generally the higher the better. |
Countries
United States
Outcome results
None listed