Table 4. Mean daily ad libitum energy intake at different moments over 2-day test sessions with or without pistachio snack and % adjustment for the extra energy provided by the morning snack.

Lunch on day 1 Dinner on day 1 Total of day 1** Total of day 2** Total of days 1 + 2**
No Snack Snack No Snack Snack No Snack Snack No Snack Snack No Snack Snack
Energy intake (kcal)* 677.2 ± 17.3 611.6 ± 17.5 (c) 717.2 ± 31.6 681.6 ± 29.4 1822.4 ± 41.2 1721.1 ± 39.5 (b) 1607.0 ± 48.4 1530.6 ± 51.1 3429.4 ± 71.9 3251.7 ± 70.6 (**)
Decrease of energy intake after snack – 66.7 kcal (c) – 35.6 kcal – 101.2 kcal (b) – 76.4 kcal – 177.7 kcal (**)
Adjustment: % of the extra energy provided by the snacks 26.3% 14.2% 40.6% 30.6% 35.6%

Two tailed paired t tests; (**) p < 0.01, (c) p < 0.001.

* Values are means (±SEM) after pooling initial and final measurements in both groups (Control + Experimental, i.e. per protocol population n = 57, energy provided by the snacks excluded).

** Total intake including breakfast (identical at session with and at session without snack).