To use the Ab Circle Pro, place your knees in the corresponding cups, and grip the handlebars with both hands. Engaging the abdominal muscles, rotate your body as far as possible to each side, then repeat for the desired number of repetitions.
The Ab Circle Pro is a home exercise device intended to work the upper, middle and lower abdominal muscles, as well as the obliques. Marketing for the Ab Circle Pro claims that using the machine for three minutes provides a workout equal to 100 sit ups. The Ab Circle Pro offers three levels of resistance and a friction-free track that helps the user add a cardiovascular element to the resistance workout.
The Ab Circle Pro may be adjusted to provide an additional workout for the hips, thighs and gluteal muscles. Users are advised to work out on the Ab Circle Pro for at least three minutes per day for at least two weeks for best results.
While regular use of the Ab Circle Pro may help to improve the strength and tone of the abdominal muscles, this workout alone is unlikely to cause weight loss. In 2012, the Federal Trade Commission filed deceptive advertising charges against the marketers of the Ab Circle Pro for making false claims about the product's effectiveness as a weight loss aid.