Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
This randomized controlled trial aims to evaluate the effect of a 4-week daily consumption of a functional date bar enriched with magnesium, vitamin C, and grape seed extract on perceived stress and salivary cortisol levels in healthy young women. Participants will be randomly assigned to either an intervention group receiving the enriched bar or a control group receiving a placebo bar identical in appearance and taste. Primary outcomes include changes in salivary cortisol levels and perceived stress (PSS-14).
Chronic psychological stress is a risk factor for depression, anxiety, eating disorders, and various metabolic disorders. Dietary components, including magnesium, vitamin C, and polyphenols (grape seed extract), have the potential to modulate the stress response through their effects on the hypothalamic-pituitary-adrenal (HPA) axis and the antioxidant status of consumers. However, data on the effects of complex nutritional interventions in healthy young women are limited: most studies have focused on the use of dietary supplements in their pure form, without their inclusion in food matrices. At the same time, the use of complete, multi-component functional foods offers advantages in the form of an improved consumer experience (a date bar has more appealing organoleptic characteristics compared to vitamin and mineral premixes and tablets, and consumption of the bar does not require additional preparation, such as dissolution in water). The development and study of the clinical properties of functional foods is relevant for the emerging personalized nutrition market.
This study investigates the effects of a functional food product (date-based bar enriched with magnesium, vitamin C, and grape seed extract) compared to a placebo bar over a 4-week period in healthy women aged 18-28 years.
Not provided
Not provided
Not provided
Not provided
| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Functional Bar | Experimental | Daily consumption of a functional date-based bar enriched with magnesium, vitamin C, and grape seed extract for 4 weeks. |
|
| Placebo Bar | Placebo Comparator | Daily consumption of a date-based bar in which all active ingredients are replaced with maltodextrin, for 4 weeks. |
|
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Functional Bar | Dietary Supplement | Daily consumption of a functional date-based bar enriched with magnesium (240 mg), vitamin C (300 mg), and grape seed extract (100 mg) for 4 weeks. |
| Measure | Description | Time Frame |
|---|---|---|
| Change in Morning Salivary Cortisol Level | Salivary cortisol levels are measured in the morning (6:00-10:00 AM), 30-60 minutes after waking, to capture the morning peak. Cortisol concentrations are reported in ng/mL. The typical reference range for morning salivary cortisol levels in healthy adults is approximately 1.0-7.1 ng/mL, although absolute values may vary depending on the assay used. The primary analysis is based on the change in cortisol levels within a subject from baseline to 4 weeks. A decrease in morning salivary cortisol levels is generally interpreted as a reduction in the physiological stress response (a positive result in the context of stress reduction). An increase may indicate an increase in the stress response. Both directions are analyzed as continuous changes, and differences between groups in change scores will be compared. | Baseline and 4 weeks |
| Change in Perceived Stress Scale (PSS-14) score | The Perceived Stress Scale (PSS-14) is a 14-item self-reported questionnaire measuring the degree to which situations in one's life are appraised as stressful. Each item is scored from 0 (Never) to 4 (Very often). Total scores range from 0 to 56, with higher scores indicating higher perceived stress. In this study, the absolute score is not used as a threshold; rather, improvement is defined as a reduction (decrease) in the PSS-14 score from baseline to follow-up. Any decrease reflects a positive outcome (reduction in perceived stress), regardless of the final score. | Baseline and 4 weeks |
Not provided
Not provided
Inclusion Criteria:
Exclusion Criteria:
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| K.G. Razumovsky Moscow State University of Technologies and Management | Moscow | 109004 | Russia |
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
| Placebo Bar | Dietary Supplement | Daily consumption of a date-based bar in which all active ingredients are replaced with maltodextrin, for 4 weeks. |
|