1.
The effects of repetitive transcranial magnetic stimulation on body weight and food consumption in obese adults: A randomized controlled study.
Kim, SH, Chung, JH, Kim, TH, Lim, SH, Kim, Y, Eun, YM, Lee, YA
Brain stimulation. 2019;(6):1556-1564
Abstract
BACKGROUND Although some studies have reported significant reductions in food cravings following the single-session of repetitive transcranial magnetic stimulation (rTMS), there is little research on the effects of multi-session of rTMS on food consumption and body weight in obese subjects. OBJECTIVE We conducted 4-week randomized, sham-controlled, single-blind, parallel-group trial to examine the effect of rTMS on body weight in obese adults. METHODS Forty-three obese patients (body mass index [BMI] ≥25 kg/m2) aged between 18 and 70 years were randomized to the sham or real treatment group (21 in the TMS group and 22 in the sham treatment group). A total of 8 sessions of rTMS targeting the left dorsolateral prefrontal cortex (DLPFC) was provided over a period of 4 weeks. The primary outcome measure was weight change in kilograms from baseline to 4 weeks. Secondary endpoints included changes in anthropometric measures, cardiovascular risk factors, food intake, and appetite. RESULTS Participants in the rTMS group showed significantly greater weight loss from baseline following the 8 session of rTMS (-2.75 ± 2.37 kg vs. 0.38 ± 1.0 kg, p < 0.01). Consistent with weight loss, there was a significant reduction in fat mass and visceral adipose tissue at week 4 in the rTMS group compared with the control group (p < 0.01). After the 8 sessions of rTMS, the TMS group consumed fewer total kilocalories and carbohydrates per day than the control group (p < 0.05). CONCLUSIONS 8 sessions of HF rTMS delivered to the left DLPFC were effective in inducing weight loss and decreasing food intake in obese patients. TRIAL REGISTRATION Clinical trial registered with the Clinical Trials Registry at http://cris.cdc.go.kr (KCT0002548).
2.
The effects of repetitive transcranial magnetic stimulation on eating behaviors and body weight in obesity: A randomized controlled study.
Kim, SH, Chung, JH, Kim, TH, Lim, SH, Kim, Y, Lee, YA, Song, SW
Brain stimulation. 2018;(3):528-535
Abstract
BACKGROUND Although some studies have reported significant reductions in food cravings following repetitive transcranial magnetic stimulation (rTMS), none have examined changes in body weight. OBJECTIVE We conducted 2-week randomized, sham-controlled, single-blind, parallel-group trial to examine the effect of rTMS on body weight in obese patients. METHODS Sixty obese patients (body mass index [BMI] ≥25 kg/m2) aged between 18 and 65 years were recruited. A total of 4 sessions of rTMS targeting the left dorsolateral prefrontal cortex (DLPFC) was provided over a period of 2 weeks, with a follow-up assessment conducted two weeks after treatment had finished. The primary outcome measure was weight change in kilograms from baseline to 4 weeks. Secondary endpoints included changes in anthropometric measures, cardiovascular risk factors, food intake, and appetite. RESULTS Of the 60 volunteers, 57 completed the 4-week follow-up (29 in the TMS group and 28 in the sham treatment group). Participants in the rTMS group showed significantly greater weight loss from baseline following the 4 session of rTMS (p = 0.002). Consistent with weight loss, there was a significant reduction in BMI, fat mass and VAT at week 4 in the rTMS group compared with the control group (p < 0.05). After the 4 sessions of rTMS, the TMS group consumed fewer total kilocalories per day than the control group (p < 0.01). CONCLUSIONS rTMS delivered to the left DLPFC was effective in decreasing food intake and facilitating weight loss in obese patients. The results of this study suggest that rTMS could be an effective treatment option for obesity. TRIAL REGISTRATION Clinical trial registered with the Clinical Trials Tegistry at https://cris.nih.go.kr (KCT0001455).