Premium
Black pepper consumption does not influence 24‐hour energy expenditure or respiratory quotient in overweight postmenopausal women
Author(s) -
O'Connor Annalouise,
Corbin Karen,
Nieman David,
Swick Andrew
Publication year - 2012
Publication title -
the faseb journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.709
H-Index - 277
eISSN - 1530-6860
pISSN - 0892-6638
DOI - 10.1096/fasebj.26.1_supplement.820.16
Subject(s) - respiratory quotient , medicine , overweight , meal , leptin , obesity , endocrinology , ghrelin , weight management , appetite , insulin , hormone
As traditional recommendations have not successfully dampened rising obesity rates, there has been an increased interest in the role of thermogenic ingredients in weight management. It has been suggested that black pepper (BP) may impact energy expenditure (EE), however despite promising in vitro and rodent work, no study has examined the thermogenic capacity of BP in humans. Therefore, our aim was to determine the impact of acute BP consumption on 24‐hour EE, respiratory quotient (RQ), and biochemical markers associated with metabolic rate and satiety in humans. In a randomized cross‐over study, post‐menopausal overweight or obese women ( n =17) spent two 24‐hour periods within the metabolic chamber at the UNC Nutrition Research Institute. During each study day, subjects remained sedentary and consumed meals tailored to their energy requirements, supplemented with or without 1.5g of BP (0.5mg/meal). Blood was sampled 30 minutes following lunch for assessment of glucose, insulin, gut peptides (including GLP‐1, PYY, ghrelin), leptin, adrenaline and noradrenaline. Total 24‐hour EE and RQ did not differ significantly between the BP and control study day. There were no significant effects of BP on the biochemical markers assessed. In conclusion, acute consumption of BP did not significantly affect EE or RQ, however, it is possible that longer term treatment and/or combining BP with other spices could increase EE.