Abstract
Visceral adiposity is associated with several metabolic abnormalities, and diet-induced reduction of visceral fat improves many of these abnormalities. Daily calorie restriction (DCR) is a popular weight loss diet that reduces energy intake by 15–40% every day. Intermittent calorie restriction (ICR) is an alternative weight loss diet that produces the same reduction in average energy intake as DCR, but instead alternates between periods of intense energy restriction and periods of unrestricted intake. This chapter reviews short-term (8–12weeks) and moderate-term (13–30weeks) DCR and ICR studies to determine whether one diet regimen is better for reducing visceral fat (estimated via waist circumference). Results reveal that waist circumference reduction was comparable between ICR (5.5%) and DCR (6.5%) trials over the short term. However, ICR was more effective at reducing waist circumference (8.0%) than DCR (6.2%) in moderate-term trials. These findings indicate that ICR and DCR are equally effective at reducing visceral fat mass in the short term (<12weeks), but that ICR may be more effective at improving this body composition parameter in the long term (>12weeks).
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