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Title: Timing of food intake is associated with weight loss evolution in severe obese patients after bariatric surgery
Author: Ruíz-Lozano, T.
Vidal i Cortada, Josep
De Hollanda, A.
Scheer, F.A.J.L.
Garaulet, M.
Izquierdo Pulido, María Luz
Keywords: Ritmes circadiaris
Obesitat mòrbida
Cirurgia de l'obesitat
Circadian rhythms
Morbid obesity
Weight loss
Obesity surgery
Issue Date: 9-Feb-2016
Publisher: Elsevier
Abstract: Background Recent research has demonstrated a relationship between the timing of food intake and weight loss in humans. However, whether the meal timing can be associated with weight loss in patients treated with bariatric surgery is unknown. Objective To evaluate the role of food-timing in the evolution of weight loss in a sample of 270 patients that underwent bariatric surgery with a follow-up of 6 years. Methods Participants (79% women; age [mean ± SD]: 52 ± 11 years; BMI: 46.5 ± 6.0 kg/m2) were classified according their weight loss response patterns after bariatric surgery: good weight-loss-responders (67.8%), primarily poor weight-loss-responders (10.8%) or secondarily poor weight-loss-responders (21.4%). Then, they were grouped in early-eaters and late-eaters, according to the timing of the main meal (before or after 15:00 h). Obesity and biochemical parameters, energy and macronutrients intake, energy expenditure, sleep duration, and chronotype were studied. Results The percentage of late eaters (after 15:00 h) was significantly higher in the primarily poor weight-loss-responders (∼70%) than in both secondarily poor weight-loss-responders (∼42%) and good weight-loss-responders (∼37%) (p = 0.011). Consistently, primarily poor weight-loss-responders had lunch later as compared to good and secondarily poor weight-loss-responders (p = 0.034). Age, gender and type of surgery were not determining. Surprisingly, obesity-related variables, biochemical parameters, pre-surgical total energy expenditure, sleep duration, chronotype, calorie intake and macronutrients distribution, were similar among groups. Conclusions Weight loss effectiveness after bariatric surgery is related to the timing of the main meal. Our preliminary results suggest that the timing of food intake is important for weight regulation and that eating at the right time may be a relevant factor to consider in weight loss therapy even after bariatric surgery.
Note: Versió postprint del document publicat a:
It is part of: Clinical Nutrition, 2016, p. -
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ISSN: 0261-5614
Appears in Collections:Articles publicats en revistes (Nutrició, Ciències de l'Alimentació i Gastronomia)
Articles publicats en revistes (Medicina)
Articles publicats en revistes (IDIBAPS: Institut d'investigacions Biomèdiques August Pi i Sunyer)

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