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The primary objective of this study is to determine the effect of daily supplementation of a combined orange- and pomegranate extract for a period of 4 weeks on physical fitness compared to placebo.
In this crossover study, participants will daily receive either a placebo or Actiful®, a supplement containing 500 mg orange extract and 200 mg pomegranate actives, for 4 weeks followed by a wash-out period of 4 to 8 weeks. Subsequently, the second intervention period of 4 weeks (active product or placebo) will take place. The product and placebo will be supplied in capsules that participants can ingest with a glas of water (daily, prior to breakfast).
Dietary habits and physical activity are two important components of a healthy lifestyle. Targeted nutritional interventions may improve health and stimulate physical activity. Both orange extracts and pomegranate concentrate have been shown to exert beneficial effects on health and exercise performance. However, the effects of a combination of the two extracts on exercise and physical activity have not been investigated yet. It is expected that this combination may be an effective dietary way to improve exercise performance, physical activity in the free-living state, and quality of life in a middle aged population.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Actiful | Experimental | a supplement containing 500 mg orange extract and 200 mg pomegranate actives |
|
| Placebo | Placebo Comparator | Maltodextrin |
|
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Actiful | Dietary Supplement | supplement containing 500 mg orange extract and 200 mg pomegranate actives |
|
| Measure | Description | Time Frame |
|---|---|---|
| 6 Minute Walking Test | Participants have to walk for 6 minutes, as fast as possible. Total distance will be measured. | 0-4-8-12 weeks |
| Measure | Description | Time Frame |
|---|---|---|
| Senior Fitness test | Fitness tests to see if Actiful improves physical activity level | 0-4-8-12 weeks |
| Daily physical activity measured by accelerometers | Accelerometer is worn for 7 days prior to each testing day |
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Inclusion Criteria:
Exclusion Criteria:
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| Name | Affiliation | Role |
|---|---|---|
| Freddy Troost, Dr | Maastricht University | Principal Investigator |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| BioActor | Maastricht | 6229GS | Netherlands |
| PubMed Identifier | Type | Citation | Retractions |
|---|---|---|---|
| 37685975 | Derived | Bednarska K, Fecka I, Scheijen JLJM, Ahles S, Vangrieken P, Schalkwijk CG. A Citrus and Pomegranate Complex Reduces Methylglyoxal in Healthy Elderly Subjects: Secondary Analysis of a Double-Blind Randomized Cross-Over Clinical Trial. Int J Mol Sci. 2023 Aug 24;24(17):13168. doi: 10.3390/ijms241713168. |
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| Placebo | Other | Maltodextrin |
|
| 0-4-8-12 weeks |
| Quality of life questionnaire - WHOQOL-100 | Participants will be asked to fill out the WHOQOL-100 questionnaire to determine quality of life. Scale from 1-5 (disagree-agree) | 0-4-8-12 weeks |
| Concentration of blood marker TAC | Total antioxidant capacity measurement in plasma | 0-4-8-12 weeks |