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Randomized Trial of Exercise and Social Interaction in a Community-Based Sample of Non-Demented Chinese Elders (SCIBHI)

27. september 2012 opdateret af: University of South Florida

A Pilot Randomized Intervention Study of Physical Exercise and Social Engagement in Chinese Elders

A pilot randomized clinical trial was conducted in a random sample of 120 non-demented Chinese elders (ages 60-79) living in a defined community in Shanghai, China to compare the effects of interventions (fast walking, Tai Chi, group intellectual discussion) to no intervention with respect to change in cognition and whole brain volume determined by repeated neuropsychological batteries and MRI scans. Aims included determining the feasibility of recruiting and retaining a random sample of people age 60+ for such a trial as well as collection of preliminary data on the efficacy of the interventions. The long-term goal of this research program is to determine whether sustained physical and/or mental exercise interventions are efficacious in delaying the onset of dementia and to understand the role and mechanisms of brain growth in this process.

Studieoversigt

Status

Afsluttet

Betingelser

Intervention / Behandling

Detaljeret beskrivelse

Physical exercise has been shown to increase brain volume and improve cognition in randomized trials of non-demented elderly. Although greater social engagement was found to reduce dementia risk in observational studies, randomized trials of social interventions have not been reported. A representative sample of 120 elderly from Shanghai, China was randomized to four groups (Tai Chi, Walking, Social Interaction, No Intervention) for 40 weeks. Two MRI's were obtained, one before the intervention period, the other after. A neuropsychological battery was administered at baseline, 20 weeks and 40 weeks. Comparison of changes in brain volumes in intervention groups with the No Intervention group were assessed by t-tests. Time-intervention group interactions for neuropsychological measures were evaluated with repeated-measures mixed models.

Undersøgelsestype

Interventionel

Tilmelding (Faktiske)

120

Fase

  • Ikke anvendelig

Kontakter og lokationer

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

Studiesteder

  • Kina
      • Shanghai, Kina
        • Huashan Hospital

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

60 år til 79 år (Voksen, Ældre voksen)

Tager imod sunde frivillige

Ja

Køn, der er berettiget til at studere

Alle

Beskrivelse

Inclusion Criteria:

  • living in defined area
  • either sex
  • aged 60-79

Exclusion Criteria:

  • history of stroke, Parkinson's disease or other neurologic disease
  • inability to walk unassisted for two kilometers or maintain balance with feet side-by-side or semi-tandem for 10 seconds each
  • education-adjusted Chinese Mini-Mental Examination score < 26 (to exclude individuals with dementia or moderate cognitive impairment
  • cardiovascular or musculoskeletal conditions that would be contraindicated for the intervention programs
  • contraindications for MRI
  • diagnosis of any illness that would preclude participation in the full study
  • regular vigorous exercise or Tai Chi practice.

Studieplan

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

Hvordan er undersøgelsen tilrettelagt?

Design detaljer

  • Primært formål: Forebyggelse
  • Tildeling: Randomiseret
  • Interventionel model: Parallel tildeling
  • Maskning: Enkelt

Våben og indgreb

Deltagergruppe / Arm
Intervention / Behandling
Eksperimentel: Fast walking
Participants assigned to this group met with two group leaders three times per week in the morning in Jing An Park and were encouraged to walk quickly around a 400 meter circular route. Each session consisted of 10 minutes of warm-up stretching, 30 minutes of brisk walking, and 10 minutes of cool-down exercises. Prior to the first session, each participant was given a pedometer with their name on it. They were asked to take 100 steps and the sensitivity and positioning of the pedometer was adjusted to assure accurate measurement. At the termination of each session, the pedometers were collected and the number of steps taken by each participant at that session recorded. A record of the number of steps taken for every participant at each session over the 40 week period was maintained.
Andet: Fast walking
Participants assigned to this group met with two group leaders three times per week in the morning in Jing An Park and were encouraged to walk quickly around a 400 meter circular route. Each session consisted of 10 minutes of warm-up stretching, 30 minutes of brisk walking, and 10 minutes of cool-down exercises. Prior to the first session, each participant was given a pedometer with their name on it. They were asked to take 100 steps and the sensitivity and positioning of the pedometer was adjusted to assure accurate measurement. At the termination of each session, the pedometers were collected and the number of steps taken by each participant at that session recorded. A record of the number of steps taken for every participant at each session over the 40 week period was maintained.
Aktiv komparator: Tai Chi
Participants assigned to this group met with a Tai Chi master and assistant three times per week in the morning in Jing An Park or at a nearby gymnasium depending on weather conditions. Each session included 20 min of warm-up exercises (lower back and hamstring stretching, gentle calisthenics, and balance training), 20 min of Tai Chi practice, and 10 min of cool-down exercises.
Andet: Tai Chi
Participants assigned to this group met with a Tai Chi master and assistant three times per week in the morning in Jing An Park or at a nearby gymnasium depending on weather conditions. Each session included 20 min of warm-up exercises (lower back and hamstring stretching, gentle calisthenics, and balance training), 20 min of Tai Chi practice, and 10 min of cool-down exercises.
Aktiv komparator: Intellectual stimulation
Participants assigned to this group met with a group leader and an assistant for one hour three times a week in the morning at the neighborhood community center. Although direction was initially given regarding subjects for discussion, the participants decided on their own to organize and select topics themselves.
Andet: Intellectual stimulation
Participants assigned to this group met with a group leader and an assistant for one hour three times a week in the morning at the neighborhood community center. Although direction was initially given regarding subjects for discussion, the participants decided on their own to organize and select topics themselves.
Placebo komparator: Contact and testing only
The fourth group received no intervention. Contact was maintained by phone during the intervention period to reduce dropout. Participants were called four times during the 40 weeks intervention period by the study coordinator.
Andet: Contact and testing only

Hvad måler undersøgelsen?

Primære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Change in cognitive performance on battery of neuropsychological tests
Tidsramme: Baseline, 4 months, 8 months
A comprehensive battery of neuropsychological tests was administered by a psychometrist.
Baseline, 4 months, 8 months

Sekundære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Change in whole brain volume
Tidsramme: Baseline, 8 months
Structural MRIs were obtained at baseline and 8 months to provide data from which change in whole brain volume was determined.
Baseline, 8 months

Samarbejdspartnere og efterforskere

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

Sponsor

University of South Florida

Samarbejdspartnere

Fudan University

Efterforskere

  • Ledende efterforsker: James A Mortimer, Ph.D., University of South Florida

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

1. juli 2008

Primær færdiggørelse (Faktiske)

1. september 2009

Studieafslutning (Faktiske)

1. september 2009

Datoer for studieregistrering

Først indsendt

26. september 2012

Først indsendt, der opfyldte QC-kriterier

27. september 2012

Først opslået (Skøn)

28. september 2012

Opdateringer af undersøgelsesjournaler

Sidste opdatering sendt (Skøn)

28. september 2012

Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier

27. september 2012

Sidst verificeret

1. september 2012

Mere information

Begreber relateret til denne undersøgelse

Nøgleord

Yderligere relevante MeSH-vilkår

Andre undersøgelses-id-numre

  • Byrd-ARG2007

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Kliniske forsøg med Kognitiv svækkelse

Kliniske forsøg med Fast walking

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