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Evaluation of dietary supplementation with a commercial blackcurrant fruit product on health by exploring its modulation in a model of exercise-induced oxidative stress and immune function

A crossover study of the effect of acute blackcurrant fruit product consumption on moderate exercise-induced oxidative stress and immune function in healthy subjects

Status
Completed
Phases
Unknown
Study type
Interventional
Source
ANZCTR
Registry ID
ACTRN12608000317392
Acronym
N/A
Enrollment
10
Registered
2008-07-04
Start date
2008-03-05
Completion date
Unknown
Last updated
2020-01-13

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

Conditions

None listed

Interventions

Participants will consume an ‘off-the-shelf’ blackcurrant fruit-derived product which is in capsule form or placebo (administered orally) immediately before and immediately after a 30 minute session of exercise on a rowing ergometer. The fruit product used is a powdered blackcurrant extract derived from commercial blackcurrant cultivars grown in New Zealand and encapsulated in gelatin. This is a commercial product available in health stores. Each capsule contains fruit extract approximately e

Participants will consume an ‘off-the-shelf’ blackcurrant fruit-derived product which is in capsule form or placebo (administered orally) immediately before and immediately after a 30 minute session of exercise on a rowing ergometer. The fruit product used is a powdered blackcurrant extract derived from commercial blackcurrant cultivars grown in New Zealand and encapsulated in gelatin. This is a commercial product available in health stores. Each capsule contains fruit extract approximately equivalent to 12 grams of fresh blackcurrants. The total anthocyanin content in each capsule is 60 milligrams. Trial participants will be given a total of four capsules (two before and two after exercise). This is equivalent to 48 grams of fresh blackcurrants and 240 milligrams of anthocyanins. Plasma markers will be monitored at several time points including before and after exercise and 24 hours later. There is a one week washout period between interventions.

Sponsors

The New Zealand Institute for Plant and Food Research Ltd. (Plant & Food Research)
Lead SponsorCommercial sector/Industry

Study design

Allocation
Randomised controlled trial
Intervention model
Crossover
Primary purpose
Educational / counselling / training
Masking
Blinded (masking used)

Eligibility

Sex/Gender
All
Age
20 Years to 60 Years
Healthy volunteers
Yes

Inclusion criteria

Healthy persons of any gender

Exclusion criteria

Blood-borne diseases e.g. hepatitis; high/low blood pressure; pregnancy; recent viral illness and vaccinations; chronic illness affecting the immune system e.g. lupus; taking medication that affects the properties of blood e.g. clotting; unable to perform the 30 minute exercise (e.g. heart and/or breathing problems, hernia, or injury); allergies to food especially fruit.

Outcome results

None listed

Source: ANZCTR · Data processed: Feb 4, 2026