Clinical trial registry record

A Pilot Study of the Impact of Vitamin D3 on Muscle Performance in Elderly Women

A registered study indexed because it matched monitored longevity research terms. Registry status: Completed. Registration does not establish safety or effectiveness.

Plain-language guide

Five questions to ask about this record

What this is
A clinical study registration, not a result or recommendation.
Why it may matter
The registry currently reports Completed.
Evidence
Registered phase not reported study.
Main limitation
Registration does not prove that the intervention works, is safe, or is available to you.
What changed
Registry metadata was last updated January 10, 2012.
Where to verify
Open the primary registry below for eligibility, locations, contacts, and current status.
Registry ID
NCT00986596
Last registry update
January 10, 2012
Status
Completed
Phase
Phase not reported
Sponsor
Tufts University
Enrollment
24
Countries
United States
Match confidence
100%
Source feed
ClinicalTrials.gov
Automated source synopsis

A registered study indexed because it matched monitored longevity research terms. Registry status: Completed. Registration does not establish safety or effectiveness.

Evidence snapshot

What the source actually supports

Evidence stage
Phase not reported
Study design
RANDOMIZED · PARALLEL · TREATMENT · QUADRUPLE
Evidence population
Human clinical study registration
Participants
24
Population
FEMALE · 65 Years
Duration
2006-10-01 to 2011-02-01
Intervention
vitamin D3; Placebo
Comparator
vitamin D3; placebo
Outcomes measured
Define and compare changes in size and number of type II muscle fibers in response to 4 months of treatment with 4000 I…; Define and compare vitamin D signaling in muscle biopsy specimens taken before and after the treatment. — 4 months; Define and compare changes in clinical measures of muscle performance before and after treatment — 4 months; Define and compare levels of bone turnover before and after treatment — 4 months
Reported result
No reusable finding-level result is available in this record.

Main limitationThis is a study registration. No reusable structured result is available here, so it cannot show whether the intervention worked or was safe.

Safety and approvalEligibility, adverse-event details, and clinical decisions must be checked in the official registry and with qualified clinicians. Trial registration is not regulatory approval and does not establish that an intervention is available.

Source supportStructured registry protocol metadata; no finding-level conclusion is generated.

Trial stage · Phase not reportedA trial phase describes development stage; it does not establish a positive result.
Phase 1Phase 2Phase 3Phase 4

Registration and recruitment status do not establish safety, efficacy, or regulatory approval.

Why this record appears here · 100% topic match

The title, summary, or source keywords matched one or more topics followed by immortal.life. A higher percentage means a stronger topic match; it does not rate safety, effectiveness, or study quality.

  • Vitamin D and ageing · 100%Title contains controlled topic terminology. Summary contains controlled topic terminology. Source terminology contains a controlled topic term. Title supplies ageing or longevity context.

Automated source check 100% · update recency 35%. These figures help sort records; they are not medical ratings.

vitamin d aging
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