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Changes in eating behaviour and meal pattern following Roux-en-Y gastric bypass.

Artikel i vetenskaplig tidskrift
Författare Anna Laurenius
Ingrid Larsson
M Bueter
K J Melanson
Ingvar Bosaeus
Helene Berteus Forslund
Hans Lönroth
Lars Fändriks
Torsten Olbers
Publicerad i International journal of obesity
Volym 36
Nummer/häfte 3
Sidor 348–355
ISSN 1476-5497
Publiceringsår 2012
Publicerad vid Institutionen för kliniska vetenskaper, Avdelningen för gastrokirurgisk forskning och utbildning
Institutionen för medicin, avdelningen för invärtesmedicin och klinisk nutrition
Sidor 348–355
Språk en
Länkar dx.doi.org/10.1038/ijo.2011.217
Ämnesord Roux-en-Y gastric bypass; meal size; eating rate; meal pattern; eating behaviour; TFEQ-R21
Ämneskategorier Kirurgi, Medicin och Hälsovetenskap

Sammanfattning

Background:Little is known about eating behaviour and meal pattern subsequent to Roux-en-Y gastric bypass (RYGB), knowledge important for the nutritional care process. The objective of the study was to obtain basic information of how meal size, eating rate, meal frequency and eating behaviour change upon the RYGB surgery.Materials and methods:Voluntary chosen meal size and eating rate were measured in a longitudinal, within subject, cohort study of 43 patients, 31 women and 12 men, age 42.6 (s.d. 9.7) years, body mass index (BMI) 44.5 (4.9) kg m(-2). Thirty-one non-obese subjects, 37.8 (13.6) years, BMI 23.7 (2.7) kg m(-2) served as a reference group. All subjects completed a meal pattern questionnaire and the Three-Factor Eating Questionnaire (TFEQ-R21).Results:Six weeks postoperatively meal size was 42% of the preoperative meal size, (P<0.001). After 1 and 2 years, meal size increased but was still lower than preoperative size 57% (P<0.001) and 66% (P<0.001), respectively. Mean meal duration was constant before and after surgery. Mean eating rate measured as amount consumed food per minute was 45% of preoperative eating rate 6 weeks postoperatively (P<0.001). After 1 and 2 years, eating rate increased to 65% (P<0.001) and 72% (P<0.001), respectively, of preoperative rate. Number of meals per day increased from 4.9 (95% confidence interval, 4.4,5.4) preoperatively to 6 weeks: 5.2 (4.9,5.6), (not significant), 1 year 5.8 (5.5,6.1), (P=0.003), and 2 years 5.4 (5.1,5.7), (not significant). Emotional and uncontrolled eating were significantly decreased postoperatively, (both P<0.001 at all-time points), while cognitive restraint was only transiently increased 6 weeks postoperatively (P=0.011).Conclusions:Subsequent to RYGB, patients display markedly changed eating behaviour and meal patterns, which may lead to sustained weight loss.International Journal of Obesity advance online publication, 29 November 2011; doi:10.1038/ijo.2011.217.

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