Influence of fasting during the night shift on next day eating behavior, hunger, and glucose and insulin levels: a randomized, three-condition, crossover trial.
Eur J Nutr
; 62(3): 1281-1293, 2023 Apr.
Article
in En
| MEDLINE
| ID: mdl-36526739
ABSTRACT
AIMS:
To investigate the influence of fasting during the night shift on eating behavior, hunger, glucose and insulin levels the following day.METHODS:
Study with 10 male police officers who have been working at night. Participants were tested under three different conditions separated by at least 6 days of washout in a randomized, crossoverdesign:
"Night Shift Fasting" (NSF)-two nights of fasting during the night shift; "Night Shift Eating" (NSE)-two nights with the consumption of a standardized meal during the night shift (678 ± 42 kcal consumed at ~ 0200 h); and "Nighttime Sleep" (NS)-two nights of sleep. The morning after, blood glucose and insulin and hunger ratings were assessed, and food intake was assessed with an ad libitum test meal. Food intake was also assessed throughout the remainder of the day using a food record. Generalized Estimating Equations were used to analyze the effect of experimental condition.RESULTS:
Food intake during the test meal, especially of proteins and fats, was higher after fasting during the night shift compared to the other conditions (p < 0.05), whereas desire to eat scores were lower after the NSF compared to NSE condition (p = 0.043). Hunger levels were lower after the NSF compared to the NS condition (p = 0.012). Insulin and HOMA-IR were also lower in the morning after NSF (p < 0.001).CONCLUSION:
Fasting during the night shift leads to not only a higher intake of energy and macronutrients both in the early morning after work and throughout the next day, but also lower insulin levels and HOMA-IR in the morning. REGISTRATION NUMBER OF CLINICAL TRIAL NCT03800732. Initial release 01/09/2019. Last release 02/23/2022.Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Hunger
/
Insulins
Type of study:
Clinical_trials
Aspects:
Determinantes_sociais_saude
Limits:
Humans
/
Male
Language:
En
Journal:
Eur J Nutr
Journal subject:
CIENCIAS DA NUTRICAO
Year:
2023
Document type:
Article
Affiliation country:
Brazil