CO189. NIGHT FASTING DURATION IS ASSOCIATED WITH VALUES OF BODY WEIGHT AND WAIST CIRCUMFERENCE IN OVERWEIGHT CHILEAN ADULTS
Patricia López Legarrea1, Javier García Rubio2, Pedro Olivares Sánchez2
1 Facultad de Ciencias de la Salud. Universidad Autónoma de Chile, Santiago, Chile; 2 Facultad de Educacion. Universidad Autónoma de Chile, Santiago, Chile.
Introduction: Body weight alterations including overweight/obesity have become a major public health worrying worldwide. With respect to Chile, it is one of the countries with the highest rates of Latin
America region. Research for the prevention and treatment of these
diseases has focused in several dietary aspects, including meal frequency
and fasting options. Objective: The aim of the present report
was to evaluate the potential association of specific dietary habits
such as the duration of night fasting with indicators of overweight/obesity in a sample of Chilean adults. METHOD: Data were obtained
from National Health Survey, carried out by the Chilean Ministry
of Health between years 2009-2010, which was an observational
and transversal study. 5416 adult subjects were recruited, being the
sample representative of both rural and urban areas and male and
female gender. Waist circumference and body weight were determined
following validated protocols. The sample was categorized
according to the duration of night fasting into two groups: less than
8 hours or 8 hours or more. Results are presented as mean±SE. Results:
Data for this report include 4857 subjects (1955 men, 2902
women; mean age 46±19 years old). Analyses comparing the two
groups of night fasting duration revealed that subjects fasting 8
hours or more had significantly lower body weight values than those
fasting less than 8 hours (78.07±1.11 kg vs. 122.32±15.28 kg; p<
0.001). The same difference was observed for waist circumference
(97.60±1.08 cm in the 8-hours-or-more group vs. 141.35±15.29
cm. in the less-than-8-hours-group; p<0.001). Conclusions: A longer
night fasting is associated with lower values of body weight and
waist circumference in Chilean adults. This aspect should be considered
in order to design more effective dietary plans for preventing
and treating body weight alterations.
