Natalia Sanchez-Aguadero1, Jose I Recio-Rodriguez1,2, Maria C Patino-Alonso1,3, Sara Mora-Simon1,4, Rosario Alonso-Dominguez1, Benigna Sanchez-Salgado1, Manuel A Gomez-Marcos1,5, Luis Garcia-Ortiz1,6. 1. a Biomedical Research Institute of Salamanca (IBSAL), Primary Care Research Unit, The Alamedilla Health Centre, Castilla and León Health Service (SACYL) , Salamanca , Spain. 2. b Department of Nursing and Physiotherapy , University of Salamanca , Salamanca , Spain. 3. c Department of Statistics , University of Salamanca , Salamanca , Spain. 4. d Department of Basic Psychology, Psychobiology and Behavioral Sciences Methodology , University of Salamanca , Salamanca , Spain. 5. e Department of Medicine , University of Salamanca , Salamanca , Spain. 6. f Department of Biomedical and Diagnostic Sciences , University of Salamanca , Salamanca , Spain.
Abstract
OBJECTIVE: To evaluate the postprandial effects of high and low glycaemic index (GI) breakfasts on cognitive performance in young, healthy adults. METHODS: A crossover clinical trial including 40 young, healthy adults (aged 20-40 years, 50% females) recruited from primary healthcare centres in Salamanca, Spain. Verbal memory, phonological fluency, attention, and executive functions were examined 0, 60, and 120 minutes after consuming a low GI (LGI), high GI (HGI), or water breakfast. Every subject tried each breakfast variant, in a randomized order, separated by a washout period of 7 days, for a total of 3 weeks. RESULTS: A significant interaction between the type of breakfast consumed and immediate verbal memory was identified (P<.05). We observed a trend towards better performance in verbal memory (delayed and immediate), attention, and phonological fluency following an LGI breakfast. DISCUSSION: Cognitive performance during the postprandial phase in young, healthy adults was minimally affected by the GI of breakfast. The potential for breakfast's GI modulation to improve short- and long-term cognitive functioning requires further research.
RCT Entities:
OBJECTIVE: To evaluate the postprandial effects of high and low glycaemic index (GI) breakfasts on cognitive performance in young, healthy adults. METHODS: A crossover clinical trial including 40 young, healthy adults (aged 20-40 years, 50% females) recruited from primary healthcare centres in Salamanca, Spain. Verbal memory, phonological fluency, attention, and executive functions were examined 0, 60, and 120 minutes after consuming a low GI (LGI), high GI (HGI), or water breakfast. Every subject tried each breakfast variant, in a randomized order, separated by a washout period of 7 days, for a total of 3 weeks. RESULTS: A significant interaction between the type of breakfast consumed and immediate verbal memory was identified (P<.05). We observed a trend towards better performance in verbal memory (delayed and immediate), attention, and phonological fluency following an LGI breakfast. DISCUSSION: Cognitive performance during the postprandial phase in young, healthy adults was minimally affected by the GI of breakfast. The potential for breakfast's GI modulation to improve short- and long-term cognitive functioning requires further research.
Authors: Reyna Sámano; Carmen Hernández-Chávez; Gabriela Chico-Barba; Armando Córdova-Barrios; Mayela Morales-Del-Olmo; Hortensia Sordo-Figuero; Miguel Hernández; Carmen Merino-Palacios; Lucero Cervantes-Zamora; Hugo Martínez-Rojano Journal: Int J Environ Res Public Health Date: 2019-07-26 Impact factor: 3.390