To lose a weight with pilates we need to speed up and make faster transitions. This will make your heart rate up, which means burning more calories.
Pilates in general will improve your strength, your flexibility, balance and will make you fill great in your body. But, to be completely balanced you need to incorporate in your weekly fitness plan at least one or two cardio trainings. For instance, HIIT is great way to raise your heart rate and in general great cardio-resistance training.
The true is, no one has time to do separately pilates and cardio or hiit training. Therefore, best combination for your overall physical health is hiit and pilates training combination. This type of Pilatesness class will provide you strength in muscular and cardiovascular sense.
Anyway, keep in mind all Pilates movement principles. You have to remind yourself to keep neutral spine position even when performing exercises in such intense speed. Knowing how your body moves in space can make hiit training much safer.
According to one study the best way to lose weight is to exercise between 150 and 250 hours per week. That is about 30 minutes per day. Also, it is suggested to reduce calorie intake for even better results.