Weight cycling in female rats increases dietary fat selection and adiposity

Physiol Behav. 1988;42(4):389-95. doi: 10.1016/0031-9384(88)90281-8.

Abstract

The effect of repeated food restriction-refeeding (weight cycling) on macronutrient selection and adiposity was investigated in female Sprague-Dawley rats. Rats were maintained on ad lib macronutrient self-selection and were put on one of two types of restriction. One group was reduced to 75% of their body weight on restricted amounts of chow and a second group was given ad lib chow during the concurrent period and were voluntarily hypophagic. During refeeding on macronutrient self-selection, animals previously restricted selected a higher percentage of dietary fat, had larger adipose depots and plasma insulin values, and had lower heart weights both expressed in grams and as a percentage of body weight than non-restricted groups. This suggests that both severe and moderate periods of restriction may have negative health consequences.

Publication types

  • Research Support, Non-U.S. Gov't
  • Research Support, U.S. Gov't, P.H.S.

MeSH terms

  • Animals
  • Body Weight*
  • Dietary Fats / administration & dosage*
  • Energy Intake
  • Female
  • Food Preferences*
  • Rats
  • Rats, Inbred Strains

Substances

  • Dietary Fats