From the Actor
It was important to do research before developing this video. I found that the only real concern some doctors had was having pregnant women exercise lying on their back. I could not find any significant data to substantiate any great risk of exercise supine, especially if it is for a very short duration, and the "exerciser" continues to move and change position. In conversation with Dr. James Clapp, M.D., who has done extensive research involving pregnancy and exercise, author of Exercising Through Your Pregnancy, copyright 2002, he agreed that research continues regarding many issues, including this one. In fact, his preliminary studies indicate that most woman have no problem with exercise supine as long as it involves motion.
Another clinical specialist, Elizabeth Noble, PT who has over 35 years of clinical experience states in her book, Essential Exercises for the Childbearing Year, "Ironically, the most vigorous exercise that many women will ever experience - labor- has been "managed" on the back for years!" She recommends that the few women who experience discomfort should limit their exercises on the back at one time for no more than 5 minutes. In my video I have alternated positions through the video to accommodate for this possibility. Dr. Raul Artal, professor and chair of the Dept. of Ob-Gyn and Women's Health at St. Louis University School of Medicine, and ACOG advisor, has stated that "we have learned that women can enjoy a much broader range of physical activity during pregnancy than was previously thought."