The mean postprandial glucose iAUC and 21-h glucose AUC are reported in Fig. 1. Post-breakfast glucose iAUC was significantly attenuated in Condition 3 (3.5 0.9 mmol L−1 3.5 h−1, p < 0.04) but not in Condition 2 (5.8 0.8 mmol L−1 3.5 h−1, p = 0.418) compared with Condition 1 (6.7 0.8 mmol L−1 3.5 h−1). There was significant attenuation of post-lunch glucose iAUC in Condition 3 (1.3 0.9 mmol L−1 3.5 h−1, p < 0.03) and Condition 2 (2.1 0.7 mmol L−1 3.5 h−1, p < 0.05) relative to Condition 1 (4.6 0.8 mmol L−1 3.5 h−1). Compared with Condition 1 (4.0 0.7 mmol L−1 3.5 h−1), both Condition 3 (1.0 0.7 mmol L−1 3.5 h−1, p = 0.02) and Condition