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| Name | Class |
|---|---|
| Arla Foods | INDUSTRY |
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The study will explore the effects of a 6-week phospholipid drink intervention on the cognitive performance and physiological and subjective stress parameters of males following a repeated psychosocial/physical stressor.
The study conforms to a randomised, double-blind, placebo controlled, parallel groups design examining cognitive performance and physiological/subjective stress responses after a psychosocial/physical stressor before and after a six week daily intake of an phospholipid containing drink vs. placebo.
The study will examine:
Cognitive performance following acute stress prior to, and following 6-weeks intake of a phospholipid containing drink or a placebo analogue.
Physiological and subjective stress responses following acute stress prior to, and following 6-weeks intake of a phospholipid containing drink or a placebo analogue
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Phospholipid drink | Active Comparator | Participants will consume a phospholipid drink daily for 6 weeks |
|
| Placebo milk drink | Placebo Comparator | Participants will consume a placebo drink (no added phospholipids) daily for 6 weeks |
|
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Phospholipid drink | Dietary Supplement | Participant in an intervention parallel group will consume a drink with added phospholipids |
|
| Measure | Description | Time Frame |
|---|---|---|
| Cognitive performance change from baseline | Performance on a cognitive test battery at baseline will be compared to performance at week 6 | Week 1 (baseline) and week 6 |
| Measure | Description | Time Frame |
|---|---|---|
| Salivary cortisol change from baseline | Salivettes will be used to collect salivary cortisol response across exposure to a laboratory stress protocol on two occasions separated by 6 weeks | Week 1 (baseline) and week 6 |
| Blood pressure (systolic/diastolic) change from baseline |
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Inclusion Criteria:
Exclusion Criteria:
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| Name | Affiliation | Role |
|---|---|---|
| Louise Dye, PhD | University of Leeds | Principal Investigator |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Human Appetite Research Unit, University of Leeds | Leeds | West Yorkshire | LS29JT | United Kingdom |
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| Placebo milk drink | Dietary Supplement | Participant in an intervention parallel group will consume a drink without added phospholipids |
|
An ambulatory blood pressure monitor will be used to collect blood pressure response profiles across exposure to a laboratory stress protocol on two occasions separated by 6 weeks |
| Week 1 (baseline) and week 6 |
| Heart rate change from baseline | An ambulatory blood pressure monitor will be used to collect heart rate response profiles across exposure to a laboratory stress protocol on two occasions separated by 6 weeks | Week 1 (baseline) and 6 weeks |
| Subjective stress change from baseline | The Stress and Arousal Checklist (Mackay, 1978)will be used to collect subjective stress response profiles across exposure to a laboratory stress protocol on two occasions separated by 6 weeks | Week 1 (baseline) and 6 weeks |
| Subjective mood change from baseline | The Profile of Mood States (Mc Nair et al., 1971)will be used to collect subjective mood response profiles across exposure to a laboratory stress protocol on two occasions separated by 6 weeks | Week 1 (baseline) and 6 weeks |