Effect of hydroxycitrate on respiratory quotient, energy expenditure, and
glucose tolerance in male
rats after a period of restrictive feeding."
This study, done in Switzerland in 2004, used 24 male rats which were basically starved for 10 days then fed a high glucose diet plus hydroxycitrate (HCA) supplement for 6 DAYS. Controls received the same diet without the HCA supplement.
During the first couple of days, the respiration quotient (RQ) and energy expenditure (EE) decreased.