Medical Information Only. Consult your healthcare provider before considering clinical trial enrollment.
Middle Aged: early-phase trial registry
1 of 3 indexed Middle Aged trials are currently recruiting, with more weight in Phase 1-2.
Corpus placement: #5,209 of 28,707 conditions by registered trial count.
3 US clinical trials · 1 currently recruiting · #5,209 of 28,707 conditions by registered trial count
Middle Aged: 3 US clinical trials tracked, 1 recruiting.
Middle Aged is the subject of 3 registered US clinical trials on ClinicalTrials.gov, 1 of them currently open to new participants. 0 are in Phase 3-4 (later-stage) and 1 in Phase 1-2 (earlier-stage). The most active sponsor is Massachusetts General Hospital, running 3 of these trials.
Enrollment posture brief
Registry condition middle-aged
OPEN 1 | RECR 33% | LATE 0 | EARLY 1 | RANK #5209 | SPON 3
Volume-matched condition peers
Nearest open-share peer: Adherence, Treatment (33% recruiting · 6 trials)
Middle Aged lists 1 open slots (33% of 3 indexed trials). Peers are matched on registered volume, not therapeutic-area browse lists. How peer matching works →
Key findings
What ClinicalTrials.gov does not surface for Middle Aged on its own pages , computed from the registry mirror as of 2026-08-08. Each line carries its own denominator so it can be quoted as it stands.
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Middle Aged is recruiting below its size-band peers.
1 of 3 indexed trials (33.3%) are open to enrollment, against a 46.5% average across 27,806 conditions with fewer than 20 trials. The peer set uses the same ClinicalTrials.gov-derived counts as this page.
Open and recent trials
3 total, page 1 of 1
A Text- and Audio-based Intervention to Promote Physical Activity in Midlife
Massachusetts General Hospital
NCT06172933
Text Messaging to Increase Activity in Midlife
Massachusetts General Hospital
NCT04849052
A Tailored Program to Promote Well-being and Physical Activity in Mid-life Adults With Low Physical Activity
Massachusetts General Hospital
NCT04745182
Phase Distribution
| Phase | Trial count |
|---|---|
| Phase 1 | 1 |
Top Sponsors
Named interventions
Most-linked intervention names on Middle Aged records (sponsor-reported on ClinicalTrials.gov). Counts are trial links, not unique products.
US sites by state
Facility locations filed on Middle Aged trials. A trial with sites in several states counts in each.
Source: ClinicalTrials.gov, National Library of Medicine. Data is informational only.
Related
What to do with this Middle Aged page
3 registered trials, 1 currently recruiting, is a starting point for a conversation, not a diagnosis or a recommendation.
- 1 Middle Aged trials are currently recruiting, check eligibility criteria before contacting a site. Browse recruiting trials
- Massachusetts General Hospital sponsors the most Middle Aged trials on record, review their full trial history before evaluating a specific study. See Massachusetts General Hospital's trials
- Bring the specific trial ID (NCT number) to your own doctor before enrolling, this page is a directory, not medical guidance. Read the trial-finding guide
Trial and recruiting counts reflect ClinicalTrials.gov registry status as of the data vintage above; individual trial eligibility and enrollment status can change.
Every figure on PlainTrial is rendered directly from the ClinicalTrials.gov registry, no number is typed in by an editor. This Middle Aged condition card totals 3 registered trials; most-linked intervention MASTERY; top US site state Massachusetts. See our editorial standards & corrections policy, the methodology behind these numbers, the data changelog, or report a data error.