Association between sleep quality and time with energy metabolism in sedentary adults
Autor/es
Jurado-Fasoli, Lucas; Mochon-Benguigui, Sol; Castillo, Manuel J.; Amaro-Gahete, Francisco J.Fecha
2020-03-12Tipo de documento
articleÁrea/s de conocimiento
Ciencias BiomédicasResumen
The aim of the present study was to investigate the relationship of sleep quality and time with basal
metabolic rate (BMR) and fuel oxidation in basal conditions and during exercise in sedentary middleaged
adults. We also studied the mediation role of dietary intake and adherence to the traditional
Mediterranean Diet in the relationship between sleep parameters and energy metabolism parameters.A
secondary analysis of the FIT-AGEING study was undertaken. 70 middle-aged sedentary adults
(40–65 years old) participated in the present study. Sleep quality was assessed using the Pittsburgh
Sleep Quality Index (PSQI) and wrist accelerometers (ActiSleep, Actigraph, Pensacola, Florida,
USA) for 7 consecutive days. BMR was measured with indirect calorimetry and fuel oxidation was
estimated through stoichiometric equations. Maximal fat oxidation was determined by a walking
graded exercise test and dietary intake with 24 h recalls. Adherence to the traditional Mediterranean
diet was assessed through the PREDIMED questionnaire. PSQI global score (poor sleep quality) was
associated with lower basal fat oxidation (BFox), both expressed in g/min and as a percentage of
BMR, independently of confounders. We did not find any association between other sleep and energy
metabolism parameters. No mediating role of the dietary intake or PREDIMED global score was
observed in the association of PSQI and BFox. In conclusion, our study showed that a subjective poor
sleep quality was associated with lower BFox, which is not mediated by dietary intake in sedentary
adults.