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The Effect of Physical Fatigue on Different Balance Tests and Brain Activity in a Healthy Population
The Influence of Acute Physical Fatigue on Different Balance Tests and Brain Activity During These Balance Tests in a Healthy Population
The main objective of this project is:
1. To assess the influence of physical fatigue on brain functioning during a balance and reaction time task in a healthy population. In a later stage, these experiments could be carried out in a clinical context (e.g. in an ankle sprain population).
The researchers will use a randomized, placebo controlled, counter-balanced, cross-over design. Twenty healthy subjects will visit the lab 3 times. On the first visit (familiarisation trial), the investigators will collect the participants' characteristics. The participants will also be familiarized to the procedures and materials of the experiment during this first visit. The second and third visit contain the experimental setup and will proceed as follows: first, the participants will fill in a pre-test checklist, a mental fatigue scale (M-VAS) and motivation scale. In the mean time a little blood will be collected from the ear lobe to determine lactate and glucose levels; also, blood pressure will be checked.
Next, the subjects will carry out a Y-balance test and a balance reaction-time test. Session rate of perceived exertion (SRPE) is measured to indicate how fatigued the participants feel due to the test battery; also, M-VAS is collected once more, as well blood lactate, glucose and blood pressure. These measures are followed by either a physical fatigue inducing task (Modified 30 seconds Wingate protocol) or time-matched control task (sitting on the bike without pedalling). Afterwards, researchers will collect blood lactate, glucose and blood pressure two times more; participants have to fill in M-VAS (2x), perform the same Y-balance test and balance reaction time test, and fill in the SRPE scale one more time. Heart frequency and EEG will be measured continuously during the trials.
Studie Overzicht
Toestand
Conditie
Interventie / Behandeling
Studietype
Inschrijving (Werkelijk)
Fase
- Niet toepasbaar
Contacten en locaties
Studie Locaties
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Brussels, België, 1050
- Vrije Universiteit Brussel
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Deelname Criteria
Geschiktheidscriteria
Leeftijden die in aanmerking komen voor studie
Accepteert gezonde vrijwilligers
Geslachten die in aanmerking komen voor studie
Beschrijving
Inclusion Criteria:
- Healthy (No neurological/cardiorespiratory/psychological/musculoskeletal disorders)
- Male and female
- No medication
- Non-smoker
- Between 18 and 35 years old
Exclusion Criteria:
- Back and/or lower extremity injuries during the past 6 months
- Bone/joint abnormalities
- Dizziness, history of loss of consciousness, any inner ear disorders
- Nervous system disorders or dysfunctions
- Uncorrected eye disorders/dysfunctions
- Illness
- Use of medication or any kind of drugs
- Use of alcohol, caffeine and heavy efforts 24 hours before each trial
- Not eating the same meal the night before and the morning of each experimental trial
Studie plan
Hoe is de studie opgezet?
Ontwerpdetails
- Primair doel: Preventie
- Toewijzing: Gerandomiseerd
- Interventioneel model: Crossover-opdracht
- Masker: Enkel
Wapens en interventies
Deelnemersgroep / Arm |
Interventie / Behandeling |
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Placebo-vergelijker: Conditie controleren
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tijdgebonden taak (op de fiets zitten zonder te trappen)
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Experimenteel: Lichamelijke vermoeidheidstoestand
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Maximale fietsinspanning gedurende 30 seconden (Wingate gemodificeerd)
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Wat meet het onderzoek?
Primaire uitkomstmaten
Uitkomstmaat |
Maatregel Beschrijving |
Tijdsspanne |
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Balans-reactietijd test
Tijdsspanne: Verandering in evenwichts- en reactietijdprestaties: vanaf baseline en 20 minuten na baseline (onmiddellijk na de toegewezen interventies)
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Evenwichts- en reactietijdprestaties; deelnemers moeten hun evenwicht bewaren terwijl ze zo snel mogelijk in 3 verschillende richtingen reageren.
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Verandering in evenwichts- en reactietijdprestaties: vanaf baseline en 20 minuten na baseline (onmiddellijk na de toegewezen interventies)
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Y-balance test
Tijdsspanne: Change in Y-balance performance: from baseline and 20 minutes after baseline (immediately after the assigned interventions)
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Balance and reach performance; participants have to maintain their balance while reaching as far as possible along 3 different directions
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Change in Y-balance performance: from baseline and 20 minutes after baseline (immediately after the assigned interventions)
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EEG power spectrum analysis
Tijdsspanne: Change in EEG power spectrum: from baseline and 20 minutes after baseline (immediately after the assigned interventions)
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Brain activity during the Y-balance test and balance-reaction time test will be registered at baseline and immediately after the assigned interventions.
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Change in EEG power spectrum: from baseline and 20 minutes after baseline (immediately after the assigned interventions)
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Secundaire uitkomstmaten
Uitkomstmaat |
Maatregel Beschrijving |
Tijdsspanne |
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Zelfgerapporteerde motivatie
Tijdsspanne: Bij baseline: voorafgaand aan de eerste testbatterij
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Subjectieve maatstaf voor motivatie beoordeeld met de zelfgerapporteerde Motivatieschaal van Matthews et al. (de vragenlijst meet 2 constructen: intrinsieke motivatie en taaksuccesmotivatie; de vragenlijst bestaat uit 14 vragen met een score van 0 tot 4 [0 = niet allemaal gemotiveerd, terwijl 4 = maximaal gemotiveerd].
Elk construct bevat 7 vragen).
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Bij baseline: voorafgaand aan de eerste testbatterij
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Mental fatigue Visual Analogue Scale (M-VAS)
Tijdsspanne: Change in M-VAS: at baseline, 10 min after baseline (immediately after the first two balance tests), 15 min after baseline (immediately after the assigned interventions) and 25 min after baseline (immediately after the final 2 balance tests)
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Subjective measure of mental fatigue (0-10cm; 0 = no mental fatigue; 10 = maximal mental fatigue)
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Change in M-VAS: at baseline, 10 min after baseline (immediately after the first two balance tests), 15 min after baseline (immediately after the assigned interventions) and 25 min after baseline (immediately after the final 2 balance tests)
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Perception of effort (Session RPE)
Tijdsspanne: Change in session RPE: at baseline (immediately after the first two balance tests), and 15 min after baseline (immediately after the final 2 balance tests)
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Subjective measure of effort after completion of the test battery (scale from 0 to 10; 0 = very very easy; 10 = maximal effort)
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Change in session RPE: at baseline (immediately after the first two balance tests), and 15 min after baseline (immediately after the final 2 balance tests)
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Blood lactate
Tijdsspanne: Blood lactate changes: at baseline, 10 min after baseline (immediately after the first two balance tests), 15 min after baseline (immediately after assigned interventions) and 25 min after baseline (immediately after the final two balance tests
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Capillary blood will be collected at the ear lobe for the determination of blood lactate (determined enzymatically)
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Blood lactate changes: at baseline, 10 min after baseline (immediately after the first two balance tests), 15 min after baseline (immediately after assigned interventions) and 25 min after baseline (immediately after the final two balance tests
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Blood glucose
Tijdsspanne: Blood glucose changes: at baseline, 10 min after baseline (immediately after the first two balance tests), 15 min after baseline (immediately after assigned interventions) and 25 min after baseline (immediately after the final two balance tests)
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Capillary blood will be collected at the ear lobe for the determination of blood glucose concentration
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Blood glucose changes: at baseline, 10 min after baseline (immediately after the first two balance tests), 15 min after baseline (immediately after assigned interventions) and 25 min after baseline (immediately after the final two balance tests)
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Blood pressure
Tijdsspanne: Blood pressure change: at baseline, 10 min after baseline (immediately after the first two balance tests), 15 min after baseline (immediately after assigned interventions) and 25 min after baseline (immediately after the final two balance tests)
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Objective measure of blood pressure via eletronic blood pressure measuring device
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Blood pressure change: at baseline, 10 min after baseline (immediately after the first two balance tests), 15 min after baseline (immediately after assigned interventions) and 25 min after baseline (immediately after the final two balance tests)
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Medewerkers en onderzoekers
Sponsor
Onderzoekers
- Hoofdonderzoeker: Romain Meeusen, Professor, Vrije Universiteit Brussel
Studie record data
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Primaire voltooiing (Werkelijk)
Studie voltooiing (Werkelijk)
Studieregistratiedata
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Meer informatie
Termen gerelateerd aan deze studie
Aanvullende relevante MeSH-voorwaarden
Andere studie-ID-nummers
- 143201939780
Plan Individuele Deelnemersgegevens (IPD)
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Informatie over medicijnen en apparaten, studiedocumenten
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