Acute effects of coffee consumption on self-reported gastrointestinal symptoms, blood pressure and stress indices in healthy individuals

Nutrition Journal

Research

Κyriaki Sotirakoglou¹  Vassiliki Kravvariti²  George Michas²  Ioanna Kechribari²  Theodora Gourdomichali²  Emilia Papakonstantinou²  Petros Tarantilis²  Antonis Zampelas³  Konstantinos Voumvourakis⁴ 

[1] Department of Crop Science, Agricultural University of Athens, Athens, Greece;Department of Food Science and Human Nutrition, Agricultural University of Athens, IeraOdos 75, 11855, Athens, Greece;Department of Food Science and Human Nutrition, Agricultural University of Athens, IeraOdos 75, 11855, Athens, Greece;Department of Nutrition and Health, United Arab Emirates University, Al Ain, United Arab Emirates;Second Department of Neurology, University of Athens Medical School, “Attikon” University Hospital, Athens, Greece;

关键词: Coffee;    Salivary alpha-amylase;    Salivaly cortisol;    Stress;    Blood pressure;   

DOI  :  10.1186/s12937-016-0146-0

 received in 2015-12-15, accepted in 2016-03-10,  发布年份 2016

来源: Springer

【 摘 要 】

BackgroundIt has been suggested that coffee may affect the gut-brain axis with conflicting outcomes. Moreover, there is insufficient evidence to determine whether the type or temperature of coffee consumed will have a different impact on the gut-brain axis. The purpose of this study was to investigate the effects of acute coffee consumption on the following: 1. self-reported GI symptoms and salivary gastrin, 2. stress indices [salivary cortisol and alpha-amylase (sAA)] and psychometric measures, and 3. blood pressure (BP), in healthy, daily coffee consuming individuals in non-stressful conditions.MethodsThis was a randomized, double blind, crossover clinical trial, in which 40 healthy individuals (20 men, 20 women), 20–55 years of age, randomly consumed four 200 ml coffee beverages containing 160 mg caffeine (hot and cold instant coffee, cold espresso, hot filtered coffee), 1 week apart. Salivary samples and psychometric questionnaires were collected at baseline and post-coffee consumption at 15,30, and 60 min for salivary gastrin and sAA measurements and at 60,120, and 180 min for cortisol measurements. BP was measured at beginning and end of each intervention. ClinicalTrials.gov ID: NCT02253628ResultsCoffee consumption significantly increased sAA activity (P = 0.041), with significant differences only between cold instant and filter coffee at 15 and 30 min post-consumption (P < 0.05). Coffee temporarily increased salivary gastrin, without differences between coffee types. Coffee did not affect salivary cortisol or self-reported anxiety levels. Coffee consumption significantly increased BP, within the healthy physiological levels, in a gender specific manner at the end of the experimental periods, without differences between coffee types.ConclusionAcute coffee consumption in non-stressful conditions activated sAA and BP but not salivary cortisol, indicating activation of the sympathetic nervous system. Post-coffee sAA increase without a concomitant cortisol increase may also indicate that coffee may have some anti-stress properties.

【 授权许可】

CC BY   
© Papakonstantinou et al. 2016