Bobert, every body is different, so no one can predict what would take off an exact inch from a waist. The body will change with exercise as different parts of the body will use up stores of fat, but in women of a certain age and older, we have the issue of estrogen loss causing the body to store more fat on the abs. It's natural. Continued exercise without overeating will eventually bring greater fitness. The only way to take an exact amount off a specific spot is surgery or liposuction. I recommend the continued treadmill and adding 100 ab crunches every other day - do the abs crunches in 10 different positions, 10 reps each position, to target different parts of the waist.