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Capacity of Older Individuals after Nut Supplementation (COINS) Study

Investigating the effect of peanut butter on older adults’ physical and cognitive capacity

Status
Completed
Phases
Unknown
Study type
Interventional
Source
ANZCTR
Registry ID
ACTRN12622001291774
Acronym
COINS
Enrollment
120
Registered
2022-10-04
Start date
2023-05-29
Completion date
2024-06-17
Last updated
2026-01-05

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

None listed

Brief summary

The primary objective is to investigate the effects of peanut butter (43g/d), consumed for 6 months, on 1) older adults’ functional capacity (primary outcomes) and its associated factors such as cognitive function, lean mass, muscle strength, as well as late-life function and disability, which reflects real-world endpoint related to physical capacity. The secondary objective is to explore if the effects of peanut butter supplementation on primary objective outcomes are mediated by improvement in diet quality following peanut butter supplementation.

Interventions

Participants allocated to the peanut butter intervention group will be asked to consume 43g of pre-portioned, commercially available peanut butter per day over the 6 month intervention period (provided to participants free-of-charge). Adherence to intervention will be monitored through the return of un-consumed peanut butter portions.

Sponsors

Deakin University
Lead SponsorUniversity

Study design

Allocation
Randomised controlled trial
Intervention model
Parallel
Primary purpose
Prevention
Masking
Blinded (masking used) (Caregiver, Investigator, Outcomes Assessor)

Eligibility

Sex/Gender
All
Age
65 Years to No maximum
Healthy volunteers
Yes

Inclusion criteria

The inclusion criteria include: 1) BMI 18 – 35 kgm-2, 2) absence of nut allergy, 3) low nut consumers (2 or less serves of any nuts/week), 4) generally healthy or with metabolic disease(s) managed through lifestyle or common medications (except for insulin), 5) at risk for functional impairment, as defined as feeling unsteady on feet when standing/ walking/doing daily activities, or have had a fall in the last 12 months, or have concerns over decreased appetite and poor dietary intake.

Exclusion criteria

The exclusion criteria include: 1) taking any other oral nutrition supplement or undertaking structure resistance or exercise programs more than once per week, 2) presence of illness that affects dietary intake, metabolism or cognitive/physical function capacity e.g. gastrointestinal disease, musculoskeletal conditions or cancer, and 3) presence of conditions (e.g. osteoarthritis or lower back pain) that prevent participants from performing physical capacity tests in this study.

Outcome results

None listed

Source: ANZCTR · Data processed: Feb 5, 2026