Skip to main content
OpenTrials
Completed

NCT Number: NCT05527886

Acute Effects of Dynamic Stretching, Plyometrics, and Loading on Achilles Tendon Properties and Performance Outcomes

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.

Completed

Looking for future studies?

Notify Me

Key information

Conditions

Tendon Injuries Wounds and Injuries

Age range

18 year and older

Sex eligibility

All sexes

Study type

Interventional

Phase

Not applicable

Primary location

Sanford Coyote Sport Center

Vermillion, South Dakota, 57069, United States

About this study

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.

Who can participate

Healthy volunteers accepted: Yes

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • College student

Exclusion criteria

  • Unable to complete interventions

Treatment and study plan

AAROM

Other

AAROM with knee to wall exercise, 3x30 reps

Slow Load

Other

Single leg heel raise, 3x10 reps

Plyometric

Other

Double leg 5 inch wall hops, 3x10 sec

Primary outcomes

  1. Achilles Tendon Stiffness

    Time frame: immediately

    A myotonometer will measure the stiffness in N/m.

  2. Achilles Tendon Natural Oscillation

    Time frame: immediately

    A myotonometer will measure the natural oscillation frequency in Hz.

  3. Achilles Tendon Logarithmic Decrement

    Time frame: immediately

    A myotonometer will measure logarithmic decrement, which is a measure of elasticity.

  4. Achilles Tendon Mechanical Stress Relaxation Time

    Time frame: immediately

    A myotonometer will measure mechanical stress relaxation time in ms.

  5. Achilles Tendon Creep

    Time frame: immediately

    A myotonometer will measure creep in De.

Secondary outcomes

  1. Single-leg drop jump vertical

    Time frame: 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.

  2. Reactive Strength Index

    Time frame: immediately

    Reactive Strength Index will be measured as an AU, the higher the better.

  3. Flight Time

    Time frame: immediately

    Flight time will be measured in ms, the higher the better.

  4. Contact Time

    Time frame: immediately

    Contact time will be measured in ms, the lower the better.

  5. Limb Stiffness

    Time frame: immediately

    Limb stiffness will be measured in kN/m, generally the higher the better.

Sponsors and collaborators

Lead sponsor

University of South Dakota

Other

Registry information

Important dates

Study start
2023
Primary completion
2023
Study completion
2023
First posted
Sep 6, 2022
Registry last updated
Dec 11, 2023

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

Related clinical trials

Published trials that share one or more normalized conditions with this study.