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Improving Vitamin D Status in Home-bound Elders (MOW VitD)

31. juli 2019 oppdatert av: Wake Forest University Health Sciences

Improving Vitamin D Status in Home-bound Elders: a Pilot Study

In the past two decades, the role of vitamin D has extended beyond bone health to encompass a wide range of biological activities important to physical function in older adults. A growing body of evidence now shows that circulating 25-hydroxyvitamin D (25(OH)D) levels < 75 nmol/L (< 30 ng/mL)) are associated with physical impairments such as reduced walking speed and impaired balance as well as falls. Older adults are at risk for low levels of 25-hydroxyvitamin D because of reduced exposure to ultraviolet B radiation, reduced efficiency of previtamin D synthesis in the skin, and low dietary intake. Although data from the National Health and Nutrition Examination Survey (NHANES) 2000-2004 indicate that frank vitamin D deficiency (serum 25(OH)D < 25 nmol/L [10 ng/mL]) is rare in the U.S. (5% or less), vitamin D insufficiency (serum 25(OH)D < 75 nmol/L [30 ng/mL]) is prevalent (~75%) among older adults. Older home-bound adults are a vulnerable subgroup of older adults for poor dietary intake and nutritional health, nutrition-related health conditions, and functional decline and disability. The primary goal of this pilot study is to assess the feasibility of a partnership with Senior Services of Forsyth County to address vitamin D insufficiency in home-bound older adults receiving home-delivered meals. A secondary goal is to obtain preliminary data on the effectiveness of vitamin D supplementation on improving vitamin D levels and reducing falls.

Studieoversikt

Status

Fullført

Forhold

Intervensjon / Behandling

Detaljert beskrivelse

In the past two decades, the role of vitamin D has extended beyond bone health to encompass a wide range of biological activities important to physical function in older adults. A growing body of evidence now shows that circulating 25-hydroxyvitamin D (25(OH)D) levels < 75 nmol/L (< 30 ng/mL)) are associated with physical impairments such as reduced walking speed and impaired balance as well as falls. Older adults are at risk for low levels of 25-hydroxyvitamin D because of reduced exposure to ultraviolet B radiation, reduced efficiency of previtamin D synthesis in the skin, and low dietary intake. Although data from the National Health and Nutrition Examination Survey (NHANES) 2000-2004 indicate that frank vitamin D deficiency (serum 25(OH)D < 25 nmol/L [10 ng/mL]) is rare in the U.S. (5% or less), vitamin D insufficiency (serum 25(OH)D < 75 nmol/L [30 ng/mL]) is prevalent (~75%) among older adults. Older home-bound adults are a vulnerable subgroup of older adults for poor dietary intake and nutritional health, nutrition-related health conditions, and functional decline and disability. The primary goal of this pilot study is to assess the feasibility of a partnership with Senior Services of Forsyth County to address vitamin D insufficiency in home-bound older adults receiving home-delivered meals. The investigators will accomplish this goal by conducting a 5-month randomized, controlled trial in 200 older Meals-on-Wheels (MOW) recipients randomized to receive monthly either (1) 100,000 IU vitamin D3 or (2) an active placebo (vitamin E) to achieve the following specific aims:

Aim 1: Determine the prevalence of falls and risk of vitamin D insufficiency in 200 MOW recipients.

Aim 2: Assess the feasibility of the vitamin D intervention delivered through the MOW program.

Aim 3: Obtain preliminary data on the effectiveness of the intervention on improving vitamin D status and reducing falls.

Data from this pilot study will: 1) provide estimates of the prevalence of falls and vitamin D insufficiency in home-bound older adults participating in the Forsyth County MOW program; 2) provide estimates of participant compliance and drop-out to a vitamin supplementation trial delivered as part of the MOW program; 3) provide evidence for the efficacy of the vitamin D dose proposed in remediating vitamin D insufficiency; and 4) provide preliminary data on the potential benefit of vitamin D supplementation on falls in a home-bound older population.

Studietype

Intervensjonell

Registrering (Faktiske)

68

Fase

  • Ikke aktuelt

Kontakter og plasseringer

Denne delen inneholder kontaktinformasjon for de som utfører studien, og informasjon om hvor denne studien blir utført.

Studiesteder

    • North Carolina
      • Winston-Salem, North Carolina, Forente stater, 27157
        • Wake Forest University

Deltakelseskriterier

Forskere ser etter personer som passer til en bestemt beskrivelse, kalt kvalifikasjonskriterier. Noen eksempler på disse kriteriene er en persons generelle helsetilstand eller tidligere behandlinger.

Kvalifikasjonskriterier

Alder som er kvalifisert for studier

65 år og eldre (Eldre voksen)

Tar imot friske frivillige

Nei

Kjønn som er kvalifisert for studier

Alle

Beskrivelse

Inclusion Criteria:

  • Age ≥ 65 years old
  • Forsyth County Senior Services Meals-on-Wheels recipient
  • Willing to provide informed consent
  • Willing to be randomized to vitamin D or active placebo control

Exclusion Criteria:

  • Hyperparathyroidism
  • Kidney stones (within the past 2 years)
  • History of hypercalcemia
  • On dialysis
  • Inability or contraindications to consume vitamin D supplements
  • Taking prescription vitamin D2 or vitamin D3-containing supplements totaling > 1000 IU/d
  • Planning to move within the next 6 months

Studieplan

Denne delen gir detaljer om studieplanen, inkludert hvordan studien er utformet og hva studien måler.

Hvordan er studiet utformet?

Designdetaljer

  • Primært formål: Behandling
  • Tildeling: Randomisert
  • Intervensjonsmodell: Parallell tildeling
  • Masking: Enkelt

Våpen og intervensjoner

Deltakergruppe / Arm
Intervensjon / Behandling
Eksperimentell: Vitamin D3
100,000 IU vitamin D3 once monthly
100,000 IU vitamin D3 once monthly for 5 months
Placebo komparator: Vitamin E
400 IU vitamin E once monthly
400 IU vitamin E once monthly for 5 months

Hva måler studien?

Primære resultatmål

Resultatmål
Tiltaksbeskrivelse
Tidsramme
Change in 25-hydroxyvitamin D Levels Over 5 Months
Tidsramme: 5 months
Determine the effectiveness of the intervention on improving 25-hydroxyvitamin D levels (change in 25(OH)D from baseline to 5-month follow-up). Measured as 5-month follow-up 25(OH)D level minus baseline 25(OH)D level.
5 months

Sekundære resultatmål

Resultatmål
Tiltaksbeskrivelse
Tidsramme
Number of Falls
Tidsramme: 5 months
Determine the effectiveness of the intervention on reducing the number of falls using monthly fall calendars (compare the average number of falls in vitamin D3 group vs. active placebo group over 5 months)
5 months
Number of Participants Who Were Compliant to Intervention
Tidsramme: 5 months
Number of participants who consumed at least 4 out of a possible 5 supplement doses (=>80% compliance) over 5 months.
5 months

Samarbeidspartnere og etterforskere

Det er her du vil finne personer og organisasjoner som er involvert i denne studien.

Sponsor

Etterforskere

  • Hovedetterforsker: Denise K Houston, PhD, Wake Forest University

Studierekorddatoer

Disse datoene sporer fremdriften for innsending av studieposter og sammendragsresultater til ClinicalTrials.gov. Studieposter og rapporterte resultater gjennomgås av National Library of Medicine (NLM) for å sikre at de oppfyller spesifikke kvalitetskontrollstandarder før de legges ut på det offentlige nettstedet.

Studer hoveddatoer

Studiestart (Faktiske)

1. oktober 2010

Primær fullføring (Faktiske)

1. august 2011

Studiet fullført (Faktiske)

1. august 2011

Datoer for studieregistrering

Først innsendt

3. august 2011

Først innsendt som oppfylte QC-kriteriene

3. august 2011

Først lagt ut (Anslag)

4. august 2011

Oppdateringer av studieposter

Sist oppdatering lagt ut (Faktiske)

9. september 2019

Siste oppdatering sendt inn som oppfylte QC-kriteriene

31. juli 2019

Sist bekreftet

1. juli 2019

Mer informasjon

Begreper knyttet til denne studien

Andre studie-ID-numre

  • IRB00014152

Legemiddel- og utstyrsinformasjon, studiedokumenter

Studerer et amerikansk FDA-regulert medikamentprodukt

Nei

Studerer et amerikansk FDA-regulert enhetsprodukt

Nei

Denne informasjonen ble hentet direkte fra nettstedet clinicaltrials.gov uten noen endringer. Hvis du har noen forespørsler om å endre, fjerne eller oppdatere studiedetaljene dine, vennligst kontakt register@clinicaltrials.gov. Så snart en endring er implementert på clinicaltrials.gov, vil denne også bli oppdatert automatisk på nettstedet vårt. .