Role of Transcranial Direct Current Stimulation in Appetite and Weight Control

Not Applicable

Terminated

• Conditions: Weight Loss; Appetite Loss
• Interventions: Device: Shame- No current; Device: tDCS

• Registration Number: NCT05609604
• Lead Sponsor: University at Buffalo

Brief Summary

To study the effects of transcranial direct current stimulation (tDCS) on weight and appetite.

Detailed Description

1. To compare weight loss over one month in active tDCS group with sham tDCS group. The investigator will measure weight of every participants at the beginning of the study and one month after the last session of tDCS

2. To compare change in insulin sensitivity over one month in active tDCS group with sham tDCS group. The investigator will measure fasting insulin and glucose level, and calculate homeostatic model assessment-insulin resistance (HOMA-IR)

3. To compare change in cognitive performance as a response to food over one month in active tDCS group with sham tDCS group. The investigator will evaluate performance in a computerized task that measures executive functions under the presence of food (working memory, inhibitory control and a combination of both). The investigator will assess changes in accuracy and speed in the task under active tDCS versus sham tDCS.

4. To compare change in post-prandial glucose excursion and average meal counts per day. The investigator will use continuous glucose monitor to record the frequency and amplitude of glucose excursion.

Study Timeline

• Study Start: 2017-01
• Study First Submitted: 2017-01-31
• Primary Completion: 2022-10-25
• Study Completion: 2022-10-25
• Study First Submitted QC: 2022-11-01
• Study First Posted: 2022-11-08
• Status Verified: 2024-01
• Results First Submitted: 2024-01-03
• Results First Submitted QC: 2024-01-03
• Last Update Submitted: 2024-01-03
• Results First Posted: 2024-01-30
• Last Update Posted: 2024-01-30

Recruitment & Eligibility

• Status: TERMINATED
• Sex: All
• Target Recruitment: 4

Inclusion Criteria

• Men and women 18 to 80 years of age
• Body mass index > 30 kg/m2

Exclusion Criteria

• Current participation in any other concurrent clinical trials or previous participation within 30 days before the screening visit

• Pregnancy or premenopausal women who are trying to be pregnant

• Patients who are incompetent to give consent

• Obesity due to a known secondary cause (Cushing's syndrome, hypothyroidism, etc) or a history of weight loss surgery

• Have taken any of the following medications within the past 3 months:

  • phentermine, naltrexone, bupropion, topiratmate, lorcaserin, phendimetrazine, methamphetamine, benzphetamine, diethylpropion

• Any contraindication to receive transcranial direct current stimulation (tDCS):

  • Personal or family history of seizures, epilepsy or other unexplained loss of consciousness.
  • Current or past history of skin disease or damaged skin on the scalp at the site of stimulation (i.e. eczema, skin with ingrown hairs, acne, razor nicks, wounds that have not healed, recent scar tissue, broken skin, etc.).
  • Prior neurosurgical procedure or radiation.
  • Known diagnosis of brain lesions, such as tumor, stroke or multiple sclerosis
  • Implanted pacemaker, medication pump, vagal stimulator, deep brain stimulator, Transcutaneous Electrical Nerve Stimulation unit, ventriculo-peritoneal shunt or any metallic implant on the head.

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: PARALLEL

Arm && Interventions

Group	Intervention	Description
sham tDCS	Shame- No current	This group will receive 30 minutes of sham (placebo) stimulation from tDCS
active tDCS	tDCS	This group will receive 30 minutes of active stimulation from tDCS

Primary Outcome Measures

Name	Time	Method
Change in Body Weight	5 weeks	change in body weight in Kg measured from baseline at 5 weeks

Trial Locations

Locations (1)

ECMC Ambulatory Center, 3rd Floor; 🇺🇸 Buffalo, New York, United States