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Effect of Energy Restriction on Feline Weight Loss

Villaverde, C., J. J. Ramsey, et al. (2008). “Energy restriction results in a mass-adjusted decrease in energy expenditure in cats that is maintained after weight regain.” J Nutr 138(5): 856-60.

Treatment of obesity in cats can be frustrating, even if appropriate energy restriction (ER) is employed. The purpose of this study was to determine whether ER causes a long-term decrease in mass-adjusted energy expenditure (EE). Such a decrease in EE would impair weight loss and even promote regaining lost weight. EE and body composition were measured in 10 obese neutered adult cats (average body weight 6.1 kg, body condition score 7.6/9.0, fat mass 38%) at 3 time points: at baseline, during weight loss (40% ER), and after regaining weight. After weight loss, the average body weight was 5.0 kg, body condition score was 5.5/9.0, and fat mass was 31%. After a period of regaining weight, the average body weight was 6.2 kg, body condition score was 7.7/9.0, and fat mass was 42%. The total EE was significantly lower than baseline during weight loss, and remained lower than baseline even after weight regain. The results support the suggestion that ER results in a sustained mass-adjusted decrease in EE in cats.
>> PubMed Abstract

Related articles:
Weinsier, R. L., T. R. Nagy, et al. (2000). “Do adaptive changes in metabolic rate favor weight regain in weight-reduced individuals? An examination of the set-point theory.” Am J Clin Nutr 72(5): 1088-94.