Even when ab stimulators do slightly strengthen muscles, therefore, a person will not notice a difference in their appearance if they are not also burning fat. To burn fat, a person must create a calorie deficit, using more calories through exercise and movement than they eat each day. Therefore, it is impossible to draw strong scientific conclusions about the effectiveness of ab stimulators.Ī more recent study involving trained athletes found that 12 weeks of FES did not increase the size of the abdominal muscles.Īlthough the evidence that ab stimulators work well for toning the muscles is weak, FDA-regulated stimulators are safe to try.Īb stimulators cannot burn fat. However, the study was very small, and researchers have not replicated it. These findings suggest that ab stimulators might improve strength and posture while offering a very small change in waist size. The control group did not report similar outcomes and had no reduction in waist circumference. All 24 people in the stimulation group said that their abs were more toned, and 54% reported that their posture had improved. The study group also had an average 3.5-centimeter (1.4-inch) decrease in waist circumference. A curl-up test showed that these individuals had a 100% increase in abdominal endurance, compared with a 28% increase in the control group. The study group had a 58% increase in ab strength, which the team measured using an isokinetic dynamometer. The researchers compared them with 16 adults who neither used ab stimulators nor did any ab exercises for the study period.
The limited research that has looked at these devices has reported very small changes that were insufficient to change a person’s appearance significantly.įor example, a 2005 study followed 24 adults who did no exercise but used ab stimulators 5 days per week for 8 weeks.
There is less evidence that abdominal stimulators can train the abs in people seeking increased muscle strength, better posture, or a slimmer waistline. A 2016 review of 14 previous studies found that, following FES, people with spinal cord injuries were better able to breathe on their own than those acting as controls. FES works well as a physical therapy tool for people with serious muscle injuries.įor example, a doctor might recommend ab stimulation following a spinal cord injury to restore some abdominal muscle function and help a person breathe on their own.
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