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

NCT ID: NCT06331221

Last Updated: 2024-07-11

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

NA

Total Enrollment

22 participants

Study Classification

INTERVENTIONAL

Study Start Date

2023-11-02

Study Completion Date

2024-05-15

Brief Summary

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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

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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

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Healthy

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

CROSSOVER

Primary Study Purpose

HEALTH_SERVICES_RESEARCH

Blinding Strategy

NONE

Study Groups

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Control Condition

5-minute rest period.

Group Type NO_INTERVENTION

No interventions assigned to this group

Quadriceps_Concentric

40 consecutive maximal concentric contractions of quadriceps at 30º/s

Group Type ACTIVE_COMPARATOR

Muscle fatigue Protocol

Intervention Type OTHER

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.

Quadriceps_Eccentric

40 consecutive maximal eccentric contractions of quadriceps at 30°/s

Group Type ACTIVE_COMPARATOR

Muscle fatigue Protocol

Intervention Type OTHER

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.

Hamstrings_Concentric

30 consecutive maximal concentric contractions of hamstrings at 30º/s

Group Type ACTIVE_COMPARATOR

Muscle fatigue Protocol

Intervention Type OTHER

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.

Hamstrings_Eccentric

30 consecutive maximal eccentric contractions of the hamstrings at 30º/s

Group Type ACTIVE_COMPARATOR

Muscle fatigue Protocol

Intervention Type OTHER

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.

Interventions

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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.

Intervention Type OTHER

Eligibility Criteria

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Inclusion Criteria

* males aged between 18 and 30 years;
* without current or previous knee pathology or surgery;
* with a low or moderate physical activity level, according to the International Physical Activity Questionnaire;
* normal Body Mass Index (under 24.9 kg/m2), according to the World Health Organization.

Exclusion Criteria

* those with cardiorespiratory, neurological or vestibular pathologies;
* with positive knee integrity tests (anterior drawer, Lachman's test, posterior drawer; valgus and varus stress testes); and
* those taking any medication that can affect motor control (sedatives, anxiolytics, antibiotics, analgesics, NSAIDs or myorelaxants).
Minimum Eligible Age

18 Years

Maximum Eligible Age

30 Years

Eligible Sex

MALE

Accepts Healthy Volunteers

Yes

Sponsors

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Universidade do Porto

OTHER

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Locations

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Faculdade de Desporto, Universidade do Porto

Porto, , Portugal

Site Status

Countries

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Portugal

Other Identifiers

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JSA_Fatigue_FADEUP

Identifier Type: -

Identifier Source: org_study_id

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