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Bewegen en veel vezels tegen opnieuw aankomen*
Een groot probleem na het afvallen is dat men nadien doorgaans weer gewoon in gewicht aankomt. Uit deze studie, weliswaar met speciale ratten blijkt dat wat bewegen en vooral het eten van voeding rijk aan onverteerbaar zetmeel (RS) zorgt voor duidelijk minder gewichtstoename. RS wordt vooral gevonden in zaden, linzen, bonen, onrijpe bananen, muesli, (volkoren)pasta, aardappelen en (volkoren)brood. 
Resistant starch and exercise independently attenuate weight regain on a high fat diet in a rat model of obesity
Janine A Higgins3,1*, Matthew R Jackman1,2, Ian L Brown3,1, Ginger C Johnson1,2, Amy Steig1,2, Holly R Wyatt1,2, James O Hill3,1,2 and Paul S MacLean1,2 
· * Corresponding author: Janine A Higgins janine.higgins@childrenscolorado.org 
Author Affiliations
Nutrition & Metabolism 2011, 8:49 doi:10.1186/1743-7075-8-49
Abstract
Background
Long-term weight reduction remains elusive for many obese individuals. Resistant starch (RS) and exercise may be useful for weight maintenance. The effects of RS, with or without exercise, on weight regain was examined during relapse to obesity on a high carbohydrate, high fat (HC/HF) diet. 
Methods
Obesity-prone rats were fed ad libitum for 16 weeks then weight reduced on a low fat diet to induce a 17% body weight loss (weight reduced rats). Weight reduced rats were maintained on an energy-restricted low fat diet for 18 weeks, with or without a daily bout of treadmill exercise. Rats were then allowed free access to HC/HF diet containing low (0.3%) or high (5.9%) levels of RS. Weight regain, energy balance, body composition, adipocyte cellularity, and fuel utilization were monitored as rats relapsed to obesity and surpassed their original, obese weight. 
Results
Both RS and exercise independently attenuated weight regain by reducing the energy gap between the drive to eat and suppressed energy requirements. Exercise attenuated the deposition of lean mass during relapse, whereas its combination with RS sustained lean mass accrual as body weight returned. Early in relapse, RS lowered insulin levels and reduced the deposition of fat in subcutaneous adipose tissue. Exercise cessation at five weeks of relapse led to increased weight gain, body fat, subcutaneous adipocytes, and decreased lean mass; all detrimental consequences to overall metabolic health. 
Conclusions
These data are the first to show the complimentary effects of dietary RS and regular exercise in countering the metabolic drive to regain weight following weight loss and suggest that exercise cessation, in the context of relapse on a HC/HF diet, may have dire metabolic consequences. 
Het volledige artikel. (December 2011)