Abdominal fat: a pilot trial cannot isolate the effect of radiofrequency

Two treated groups, no group without radiofrequency

Participants were randomly assigned to two groups: high-power radiofrequency with a low-calorie dietary intervention, or radiofrequency alone. Each group received 12 sessions over six weeks.

The researchers measured, among other outcomes, visceral and subcutaneous abdominal fat volumes before and after treatment. Visceral fat was also assessed at a three-month follow-up. The source materials provide access only to the PubMed abstract, not the full text.

This comparison examines the addition of a dietary intervention to radiofrequency. It compares neither the device with no treatment nor the device combined with a diet with a diet alone.

Reductions observed, but the difference between groups remains uncertain

The abstract reports a 15.0% reduction in visceral fat volume in the radiofrequency-plus-diet group, compared with approximately 9.1% with radiofrequency alone. For subcutaneous fat, the reductions were 18.6% and approximately 9.2%, respectively.

These figures are changes within each group, not effects attributable to the device. The differences in changes between groups did not reach the threshold for statistical significance for either fat compartment. With such a small sample, this does not demonstrate equivalence between the approaches either.

Comparisons favored the diet group for weight and body mass index. At the three-month follow-up, average visceral fat volume remained below baseline in both groups, but this does not establish a lasting benefit beyond that follow-up.

No demonstrated cardiovascular benefit

Most biochemical parameters showed no clear difference between groups. The abstract mentions exploratory differences in triglycerides, insulin and an insulin resistance index, without providing the data needed to assess their magnitude precisely.

These observations do not demonstrate a reduction in cardiovascular risk. Assessing the device’s effectiveness in its own right would require, among other things, a comparison with a sham treatment or no radiofrequency. The supplied abstract also does not document adverse effects, funding or conflicts of interest.

What we can take away

This trial provides an exploratory signal, not sufficient evidence to choose radiofrequency for abdominal fat. The observed reduction does not establish how much is attributable to the device.