Effects of milk-based phospholipids on cognitive performance and subjective responses to psychosocial stress: A randomized, double-blind, placebo-controlled trial in high-perfectionist men
| Autor: | Karin Arkbage, Neil Bernard Boyle, Lars Thorell, Louise Dye, Fiona Croden, Pernille Dorthea Frederiksen, Clare L. Lawton |
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| Rok vydání: | 2017 |
| Předmět: |
0301 basic medicine
Adult Male Hydrocortisone Endocrinology Diabetes and Metabolism Placebo-controlled study Diastole Physiology 030209 endocrinology & metabolism Blood Pressure Placebo 03 medical and health sciences Young Adult 0302 clinical medicine Cognition Double-Blind Method Medicine Animals Humans Cognitive Dysfunction Effects of sleep deprivation on cognitive performance Phospholipids 030109 nutrition & dietetics Nutrition and Dietetics business.industry Stressor Milk Cattle business Psychosocial Stress Psychological medicine.drug Personality |
| Zdroj: | Nutrition (Burbank, Los Angeles County, Calif.). 57 |
| ISSN: | 1873-1244 |
| Popis: | Objective: The stress buffering potential of phospholipid (PL) intake on cognitive performance and neuroendocrine and psychological responses under conditions of psychosocial stress were examined in a high stress vulnerable (perfectionist) sample. Methods: Fifty four high perfectionist males consumed a six week daily intake of a bovine milk-derived PL (2.7g/day) or placebo drink in a randomised, double-blind, placebo controlled, parallel groups design. Working memory, executive control function and acute physiological/subjective responses to an acute psychosocial stressor were examined before and after the six weeks PL or placebo intake. Results: PL intake improved post-stress RT performance on an attention switching task (p = .01). No significant attenuation of the salivary cortisol stress response was shown. PL intake significantly increased mid-stress induction energetic arousal (p = .03). A non-significant reduction in anticipatory subjective stress was reported after PL intake (p = .06). Systolic (p < .04) and diastolic blood (p = .01) pressures were significantly augmented in the PL condition. Conclusions: Dietary intake of bovine milk phospholipids conferred cognitive performance benefits under conditions of psychosocial stress, but failed to moderate cortisol response. Moderation of subjective response to stress exposure may have underpinned this performance protection. |
| Databáze: | OpenAIRE |
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