Effect of calorie restriction with or without exercise on insulin sensitivity, beta-cell function, fat cell size, and ectopic lipid in overweight subjects. - Larson-Meyer DE; Heilbronn LK; Redman LM; Newcomer BR; Frisard MI; Anton S; Smith SR; Alfonso A; Ravussin E; Larson-Meyer, D Enette; Heilbronn, Leonie K; Redman, Leanne M; et al. (Diabetes Care, 2006)