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Cognition and Neuroplasticity Sedentary Adults After 8 Weeks of Aerobic Exercise

29. august 2022 opdateret af: Joyce Rios Gomes Osman, University of Miami

Assessing Cognitive Improvements, Brain Neuroplasticity and the Role of Genetic Factors After Aerobic Exercise in Sedentary Adults

The overall goal of the proposed study is to evaluate the effects of an 8-week aerobic exercise program on cognition and determine the relationship between cognitive improvements and Transcranial Magnetic Stimulation (TMS) neuroplasticity. The investigators will also explore the effect modification of BDNF levels and BDNF allelic status, and APOE4 status on cognitive response after exercise.

Studieoversigt

Status

Afsluttet

Betingelser

Intervention / Behandling

Detaljeret beskrivelse

The investigators will quantify cognitive improvements following moderate to high intensity aerobic exercise intervention (participant will choose between treadmill, elliptical or stationary bike). Each participant will engage in 60 minute daily sessions delivered 3 times/week for 8 consecutive weeks (a total of 24 sessions). The investigators will determine the relationship between cognitive improvements and TMS neuroplasticity. The cognitive domains explored will be: 1) Visuomotor processing speed and cognitive flexibility/task switching; 2) Response inhibition, mental flexibility, and attentional control; 3) Attention and working memory; 4) List Learning and Memory; and 5) Semantic Verbal Fluency. The investigators will also explore the effect modification of BDNF levels and BDNF allelic status, and APOE4 status on cognitive response after exercise.

Undersøgelsestype

Interventionel

Tilmelding (Faktiske)

75

Fase

  • Ikke anvendelig

Kontakter og lokationer

Dette afsnit indeholder kontaktoplysninger for dem, der udfører undersøgelsen, og oplysninger om, hvor denne undersøgelse udføres.

Studiesteder

  • Forenede Stater
    • Florida
      • Miami, Florida, Forenede Stater, 33136
        • University of Miami Miller School of Medicine

Deltagelseskriterier

Forskere leder efter personer, der passer til en bestemt beskrivelse, kaldet berettigelseskriterier. Nogle eksempler på disse kriterier er en persons generelle helbredstilstand eller tidligere behandlinger.

Berettigelseskriterier

Aldre berettiget til at studere

55 år og ældre (Voksen, Ældre voksen)

Tager imod sunde frivillige

Ja

Køn, der er berettiget til at studere

Alle

Beskrivelse

Inclusion Criteria:

  • age ≥ 55years
  • no clinically detectable cognitive impairment (MoCA score ≥ 24 and Clinical Dementia Rating (CDR) score of 0)
  • low activity level (individuals who do not engage in regular exercise, or currently exercise once a week or less)
  • primary language is English

Exclusion Criteria:

  • any unstable medical condition (i.e.: uncontrolled hypertension or uncontrolled diabetes)
  • medical contraindication to physical exercise
  • contraindication to TMS Neuroplasticity testing, as per the TMS Safety Guidelines.
  • History of fainting spells of unknown or undetermined etiology that might constitute seizures
  • History of seizures, diagnosis of epilepsy, history of abnormal (epileptiform) EEG or family history of treatment resistant epilepsy
  • Any current history of a psychiatric illness
  • No medication is an absolute exclusion from TMS. Medications will be reviewed by the Principal Investigator and a decision about inclusion will be made based on the following:
  • The subject's past medical history, drug dose, history of recent medication changes or duration of treatment, and combination with other Central Nervous System (CNS) active drugs.
  • The published TMS guidelines review medications to be considered with TMS.
  • Any metal in the brain, skull or elsewhere unless approved by the responsible MD
  • Any medical devices (i.e. Cardiac pacemaker, deep brain stimulator, medication infusion pump, cochlear implant, vagal nerve stimulator)
  • Intracranial lesion
  • Substance abuse or dependence within the past six months
  • Pregnant women
  • Vulnerable populations such as prisoner's
  • People unable to consent themselves
  • Subjects who, in the Investigator's opinion might not be suitable for the study

Studieplan

Dette afsnit indeholder detaljer om studieplanen, herunder hvordan undersøgelsen er designet, og hvad undersøgelsen måler.

Hvordan er undersøgelsen tilrettelagt?

Design detaljer

  • Primært formål: Andet
  • Tildeling: N/A
  • Interventionel model: Enkelt gruppeopgave
  • Maskning: Ingen (Åben etiket)

Våben og indgreb

Deltagergruppe / Arm
Intervention / Behandling
Eksperimentel: Exercise group
Each participant will engage in 60 minute daily sessions delivered 3 times/week for 8 consecutive weeks (a total of 24 sessions).
Adfærdsmæssigt: Aerobic Exercise
Participants will be fitted with a heart rate monitor and will be instructed to walk (or trot) to maintain 55-64% of maximal heart rate (determined by exercise test) for the first 4-weeks of exercise or to maintain 65-90% of maximal heart rate (determined by exercise test) for the second 4-weeks of exercise during each session.

Hvad måler undersøgelsen?

Primære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Change in TMS Plasticity Measures
Tidsramme: baseline and after 8 weeks of exercise
An index of the duration of the Theta-Burst Stimulation (TBS) induced modulation of corticospinal excitability (the time-point at which the normalized mean Motor Evoked Potential (MEP) amplitude returns to baseline values) will be defined for each participant.
baseline and after 8 weeks of exercise
Change in Cognitive Performance
Tidsramme: baseline and after 8 weeks of exercise
Cognitive performance will be assessed using a neuropsychological test battery in executive function, processing speed, learning, and language.
baseline and after 8 weeks of exercise

Sekundære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Changes in BDNF Levels
Tidsramme: baseline and after 8 weeks of exercise
Blood samples will be collected for BDNF levels.
baseline and after 8 weeks of exercise
Change in Aerobic Capacity (Cardiovascular Fitness)
Tidsramme: baseline and after 8 weeks of exercise
A maximal treadmill test will be performed to determine maximal oxygen uptake (VO2) as a measure of aerobic capacity.
baseline and after 8 weeks of exercise
Allelic Status BDNF
Tidsramme: baseline
Genetic testing will be performed to assess for brain-derived neurotrophic factor (BDNF) Val66Met polymorphism.
baseline
Allelic Status APOE
Tidsramme: baseline
Genetic testing will be performed to assess for the presence of apolipoprotein-E (APOE) e4 allele.
baseline

Samarbejdspartnere og efterforskere

Det er her, du vil finde personer og organisationer, der er involveret i denne undersøgelse.

Sponsor

University of Miami

Efterforskere

  • Ledende efterforsker: Joyce R Gomes-Osman, PT, PhD, University of Miami

Publikationer og nyttige links

Den person, der er ansvarlig for at indtaste oplysninger om undersøgelsen, leverer frivilligt disse publikationer. Disse kan handle om alt relateret til undersøgelsen.

Generelle publikationer

Datoer for undersøgelser

Disse datoer sporer fremskridtene for indsendelser af undersøgelsesrekord og resumeresultater til ClinicalTrials.gov. Studieregistreringer og rapporterede resultater gennemgås af National Library of Medicine (NLM) for at sikre, at de opfylder specifikke kvalitetskontrolstandarder, før de offentliggøres på den offentlige hjemmeside.

Studer store datoer

Studiestart (Faktiske)

8. marts 2019

Primær færdiggørelse (Faktiske)

28. maj 2021

Studieafslutning (Faktiske)

28. maj 2021

Datoer for studieregistrering

Først indsendt

11. december 2018

Først indsendt, der opfyldte QC-kriterier

14. januar 2019

Først opslået (Faktiske)

15. januar 2019

Opdateringer af undersøgelsesjournaler

Sidste opdatering sendt (Faktiske)

30. august 2022

Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier

29. august 2022

Sidst verificeret

1. august 2022

Mere information

Begreber relateret til denne undersøgelse

Andre undersøgelses-id-numre

  • 20180926

Plan for individuelle deltagerdata (IPD)

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INGEN

Lægemiddel- og udstyrsoplysninger, undersøgelsesdokumenter

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