Cinnamon Can Lower the Risk For Diabetes

This was a double blind placebo controlled study published in Diab Med 2010 thirty diabetes with a glycolated hemogoblin of greater than 7 were given 2 grams of cinnamon per day for 12 weeks vs a placebo group.  After 12 weeks the glycated  hemogoblin decreased by 0.36% in the cinnamon group vs a 0.12% increase in the placebo group.  Also the blood pressure decreased in the cinnamon group.  What if the study was done over a longer period in other words one year would the glycated hemogoblin  decrease even further?