Adaptation in Lower Extremity After 3 Running Days, With a Group Trained by Eccentric Overload

Not Applicable

Completed

• Conditions: Sports Injuries
• Interventions: Other: Control; Other: Eccentric Overload

• Registration Number: NCT02481063
• Lead Sponsor: Universidad San Jorge

Brief Summary

This study evaluates the changes in muscles and tendons in the lower limb after an intervention of fatigue during 3 consecutive days between trained or not healthy subjects. One of the 2 groups received training by eccentric overload previously.

Detailed Description

Changes in muscle and tendon tissues, due to exercise, could determine in the future the possibility of an injury. Understand the changes in the mechanical tissues is a key tool for prevention.

The evaluation of the thickness and area in tendons, the existence of new vessels within the tendon, muscle pennation angle or thermography are tools that have been widely used to detect these changes.

Running is one of the activities that can cause more muscle-tendon injuries, specially overuse injuries. However, the eccentric exercise suggest to make some adaptations in different tissues that may be beneficial to prevent damage after exercise.

Study Timeline

• Study First Submitted: 2015-05-27
• Status Verified: 2015-06
• Study Start: 2015-06
• Primary Completion: 2015-06
• Study First Submitted QC: 2015-06-22
• Study First Posted: 2015-06-25
• Study Completion: 2015-08
• Last Update Submitted: 2015-08-20
• Last Update Posted: 2015-08-21

Recruitment & Eligibility

• Status: COMPLETED
• Sex: Male
• Target Recruitment: 19

Inclusion Criteria

• Healthy subjects that performs any sport usually
• Subjects that never have made eccentric training will be included.
• Subjects must be willing to perform the procedure
• Sign informed consent

Exclusion Criteria

• Subjects enrolled with lower limb pathology in last 6 months
• Subjects that don´t complete all the procedure will be excluded.

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: PARALLEL

Arm && Interventions

Group	Intervention	Description
Eccentric	Control	6 Weeks Training with eccentric Overload (Squat with Yoyo Technology) 3 Consecutive Days Running 1 hour at 80% of Maximus Heart Rate
Eccentric	Eccentric Overload	6 Weeks Training with eccentric Overload (Squat with Yoyo Technology) 3 Consecutive Days Running 1 hour at 80% of Maximus Heart Rate
Control	Control	3 Consecutive Days Running 1 hour at 80% of Maximus Heart Rate

Primary Outcome Measures

Name	Time	Method
Composite Measure with Ultrasound in Tendons and Muscles	Change from Baseline in tendon structure, an expected average of 3 days of running	Ultrasound in Patellar and Achilles Tendon, to measure area, thickness and new blood vessels with Doppler.; Ultrasound in Vastus Lateralis and Gastrocnemius Medialis to measure pennation angle

Secondary Outcome Measures

Name	Time	Method
Temperature changes in Patellar and Achilles Tendon as assessed by thermography	Change from Baseline in tendon structure after 3 days of running. Just immediately and 10 minutes after intervention	Thermography in Patellar and Achilles Tendon in order to measure changes in temperature os these areas of interest

Trial Locations

Locations (1)

Universidad San Jorge; 🇪🇸 Villanueva de Gallego, Zaragoza, Spain