Glycemic and insulin index values of tested soy products. The mean (± SEM) glycemic index and insulin index for the reference food (glucose) and the six tested soy-based food products. The dark bars represent the glycemic index values and the light bars represent the insulin index values. For the GI values, columns with different superscripts (a, b) are significantly (P < 0.001) different. Columns representing the II values with different superscripts (w, x, y, z) are significantly different (P < 0.001).