Denne side blev automatisk oversat, og nøjagtigheden af ​​oversættelsen er ikke garanteret. Der henvises til engelsk version for en kildetekst.

Effects of PS-IPC Supplementation on Muscle Mass and Functional Outcomes in Older Adults (PS-IPC)

17. januar 2012 opdateret af: University of Arkansas

Effects of Pro-Stat Immuno-Protein Complex (PS-IPC) Supplementation on Muscle Mass and Function, Inflammatory Markers, and Immune Function in Older Adults

Sarcopenia, the age-associated loss of skeletal muscle mass and strength, is a frequent precursor to functional impairment, disability, falls, and loss of independence in the elderly. The prevalence of sarcopenia is high, with ≥ 45% of the U.S. population aged 60 years or older sarcopenic. Some possible causative factors include a decline in muscle protein synthesis, inactivity, hormonal changes, pro-inflammatory conditions, and reactive oxygen species within the muscle mitochondria, which may all be exacerbated by inadequate nutritional intake. Since dietary protein is targeted to muscle and muscle mass represents the largest tissue in the body, protein nutrition plays a significant role in muscle metabolism.

SPECIFIC AIMS The specific aim of this proposed study is to determine the effect of PS-IPC supplementation on muscle mass, muscle strength, muscle quality, and inflammatory / immune markers in healthy older adults. Subjects scoring 4 - 10 on the Short-Physical Performance Battery and aged 60-85 years will consume PS-IPC supplements or placebo three times daily for 12 weeks.

HYPOTHESES

  1. Subjects consuming PS-IPC will have a greater increase in muscle mass and muscle strength compared to a control group consuming a placebo supplement.
  2. Subjects consuming PS-IPC will demonstrate a greater increase in the fractional rate of muscle protein synthesis compared with a placebo control group.
  3. Subjects receiving PS-IPC will have a reduction in plasma concentrations of various inflammatory markers of immune function, compared to subjects consuming the placebo.

Studieoversigt

Status

Afsluttet

Betingelser

Intervention / Behandling

Undersøgelsestype

Interventionel

Tilmelding (Faktiske)

18

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
    • Arkansas
      • Little Rock, Arkansas, Forenede Stater, 72205
        • University of Arkansas for Medical Sciences

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 85 år (Voksen, Ældre voksen)

Tager imod sunde frivillige

Ja

Køn, der er berettiget til at studere

Alle

Beskrivelse

Inclusion Criteria:

  • BMI of less than or equal to 35 kg/m2, be weight stable (+/- 5 kg) over the previous 4 months (via oral report), report the absence of alcohol or drug abuse, require minimal help in performing activities of daily living, and have a Short Physical Performance Battery score of 4 - 10.

Exclusion Criteria:

  • Subjects with acute or chronic disease or who may be using drugs that might interfere with skeletal muscle metabolism / function or immune function will be excluded from participation. Other exclusion criteria include cognitive deficits identified by a Mini-Mental State Examination score < 24, mobility impairment requiring a wheelchair, infections, endocrine diseases (e.g., diabetes or untreated thyroid dysfunction), active inflammatory conditions, autoimmune disorders, renal dysfunction, anemia (hemoglobin < 11.5 g/dL), cardiac problems in preceding 3 months or congestive heart failure, chronic obstructive lung disease, neoplasia other than of the skin during the preceding 5 years, influenza vaccine within last 3 weeks or other vaccines within last 6 weeks, known systemic reaction to any immune function test antigen, and use of the following drugs: immunosuppressants, antianginal agents, antiarrhythmics, antibiotics within last 2 weeks, and oral steroids. Other conditions may be used as inclusion / exclusion criteria at the discretion of the study physician to ensure the safe participation of potential study subjects.

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: Dobbelt

Våben og indgreb

Deltagergruppe / Arm
Intervention / Behandling
Placebo komparator: Placebo tilskud
Kosttilskud: Placebo supplement
Each subject in this study will be provided the PS-IPC dietary supplement or placebo to consume three times per day for the 12-week duration of the intervention. The placebo supplement will consist of an iso-caloric supplement designed to match the PS-IPC supplement in volume, color, consistency, and palatability.
Eksperimentel: PS-IPC supplementation
Kosttilskud: Oral PS-IPC supplement
Each subject in this study will be provided the PS-IPC dietary supplement or placebo to consume three times per day for the 12-week duration of the intervention. The placebo supplement will consist of an iso-caloric supplement designed to match the PS-IPC supplement in volume, color, consistency, and palatability.

Hvad måler undersøgelsen?

Primære resultatmål

Resultatmål
Tidsramme
Muscle protein synthesis
Tidsramme: 14-16 months
14-16 months

Sekundære resultatmål

Resultatmål
Tidsramme
Body composition
Tidsramme: 14-16 months
14-16 months
Skeletal muscle strength and function
Tidsramme: 14-16 months
14-16 months
Immune function
Tidsramme: 14-16 months
14-16 months
Physical activity level
Tidsramme: 14-16 months
14-16 months
Self-perceived quality of life
Tidsramme: 14-16 months
14-16 months

Samarbejdspartnere og efterforskere

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

Sponsor

University of Arkansas

Efterforskere

  • Ledende efterforsker: Arny A Ferrando, PhD, University of Arkansas

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. juni 2009

Primær færdiggørelse (Faktiske)

1. januar 2012

Studieafslutning (Faktiske)

1. januar 2012

Datoer for studieregistrering

Først indsendt

22. juni 2009

Først indsendt, der opfyldte QC-kriterier

22. juni 2009

Først opslået (Skøn)

23. juni 2009

Opdateringer af undersøgelsesjournaler

Sidste opdatering sendt (Skøn)

18. januar 2012

Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier

17. januar 2012

Sidst verificeret

1. januar 2012

Mere information

Begreber relateret til denne undersøgelse

Nøgleord

Yderligere relevante MeSH-vilkår

Andre undersøgelses-id-numre

  • 109167

Disse oplysninger blev hentet direkte fra webstedet clinicaltrials.gov uden ændringer. Hvis du har nogen anmodninger om at ændre, fjerne eller opdatere dine undersøgelsesoplysninger, bedes du kontakte register@clinicaltrials.gov. Så snart en ændring er implementeret på clinicaltrials.gov, vil denne også blive opdateret automatisk på vores hjemmeside .

Abonner