App aids bariatric surgery prep in small trial
NCT ID NCT04451499
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study tested whether adding a smartphone app to standard dietitian visits helps people prepare for bariatric surgery. 40 adults who qualified for surgery were split into two groups: one got the app plus usual care, the other only usual care. Researchers measured changes in nutrition knowledge, weight, body composition, and other health markers before and up to 2 years after surgery.
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Study facts
What this study's own registry entry says, in plain language.
- Phase
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Not a phased trial
Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.
- Participants
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40 people
The number who actually took part.
- Started
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Dec 2020
- Finished
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Feb 2023
- Lead sponsor
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Other sponsor
The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
- Ages
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18 years and older
- Sex
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Anyone
- Healthy volunteers
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Not accepted
This study is not open to healthy volunteers. The entry requirements below say who it is open to.
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Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: * Pre-surgery: 18 years old or older, BMI ≥ 40 kg/m² or BMI≥35 kg/m² with comorbidities. * Planned surgery types: LSG, RYGB and OAGB * Reading and speaking Hebrew. Exclusion Criteria: * Previous bariatric surgery. * Planned surgery types: LAGB or BPD-DS. * Patients who underwent more than 1 preparation to bariatric surgery meeting with a dietitian. * Patients with an active psychiatric disorder (uncontrolled) or have other contraindications to bariatric surgery such as addiction to alcohol or drugs. * Diabetic patients taking Insulin. * Patients who do not own a smartphone.
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
Contacts and locations
Locations
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Assuta Medical Center
Tel Aviv, Israel
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Other studies related to the condition(s) this trial covers.
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