Climbing Repeats, but on a flat road

I used the local crit course Ault Park) and did 5 minutes at time trial pace and then 1 minute and power interval x 5 with a few minutes between. The instructions were to use a flat road and not a hill. Ault has a slight climb on each lap and a slight decent so its good for working on maintaining power going up and down. Power was 351/436, 352/423, 352/426, 346/425, 344/423. Had rested on Sunday and most of Monday. I did participate in my 55 minute circuit class last night. Didn't seem to have any negative effect today. More of these on Thursday.