NCT06331221

Effects of Different Concentric and Eccentric Muscle Fatigue Protocols on the Knee Joint Position Sense

Effects of Different Concentric and Eccentric Muscle Fatigue Protocols on the Knee Joint Position Sense: a Randomized Controlled Crossover Trial

• Status: Completed
• Phase: N/A
• Study type: Interventional
• Enrollment: 22 (actual)
• Sponsor: Universidade do Porto · Academic / Other
• Sex: Male
• Age: 18 Years – 30 Years
• Healthy volunteers: Accepted

Summary

The aim of this study was to investigate the effects of different concentric and eccentric muscle fatigue protocols on the knee joint position sense of healthy individuals.

Detailed description

A randomized controlled crossover trial will be conducted at a biomechanics laboratory with healthy males. All participants will perform with a washout period of 1 week: a control condition (5-minute rest) and 4 local muscle fatigue protocols (concentric of quadriceps; concentric of hamstrings; eccentric of quadriceps; eccentric of hamstrings) in an isokinetic dynamometer at 30º/s. Three maximum voluntary isometric contractions (MVIC) of quadriceps and hamstrings will also be assessed in the beginning of all conditions. Knee joint position sense will be assessed before and immediately after the fatigue protocols/control condition, through active concentric and eccentric positionings/repositionings, in sitting and prone positions, to a target range of 45º of knee flexion in an isokinetic dynamometer. Surface electromyography electrodes will also be placed on the vastus lateralis and biceps femoris during all procedures.

Conditions

• Healthy

Interventions

Type	Name	Description
OTHER	Muscle fatigue Protocol	Four experimental conditions consisting of different local muscle fatigue protocols performed in the isokinetic dynamometer in random order, with at least one week of interval between them.

Timeline

• Start date: 2023-11-02
• Primary completion: 2024-05-05
• Completion: 2024-05-15
• First posted: 2024-03-26
• Last updated: 2024-07-11

Locations

1 site across 1 country: Portugal