How did you implement this? I can't figure out what these instructions in the article mean: "Exercises of dry swallowing in the bridge posture lasted for 4 week

How did you implement this? I can't figure out what these instructions in the article mean: "Exercises of dry swallowing in the bridge posture lasted for 4 weeks and were performed ten times per day (Fig. 2). The exercise was performed with 10-s intervals between swallows." Does this mean that total number of daily dry swallows in bridge position was 10 or 10 times 10 (100)?