Acute and chronic non-invasive radiofrequency intervention modulates inflammatory but non epigenetic makers in physically active women
The non-invasive radiofrequency (RF) intervention has been demonstrating to improve anthropometric variables in women. However, the molecular mechanisms involved in this response were not elucidated. This study aimed verify the effect of RF on anthropometric measurements, inflammatory cytokines (interleukin (IL)-1β, IL-1ra, monocyte chemoattractant protein type 1 (MCP-1)) and global histone H4 acetylation levels in the peripheral blood of healthy women. The volunteers were divided in sedentary (SED) and physically active (PA) groups and submitted to the intervention (4 sessions, 1 time per week). Blood samples were collected before (T1), after the first session (T2) and after the last session (T3). The anthropometric measures were checked before and after the intervention. A significant reduction in body mass and adipose mass was observed in the PA group at T3 when compared to T1; while reductions in supra-iliac and abdominal skinfolds and abdominal circumference were found in SED and PA groups after intervention. The PA group presented greater reductions in supra-iliac skinfold and abdominal circumference at T3 when compared to the SED group. The intervention did not alter IL-1β and IL-1ra and global histone H4 acetylation levels in both groups. A significant increase in MCP-1 levels was found at T3 compared to T1 in the SED group. In the PA group, a reduction in MCP-1 levels was observed at T2 compared to T1. However, there was an increase in this marker at T3 compared to T1. Non-invasive RF improved anthropometric measurements with more pronounced effects in the PA and this response might involve the modulation of MCP-1.