App-technology to Improve the Level of Physical Activity After Bariatric Surgery

Not Applicable

Completed

• Conditions: Obesity; Bariatric Surgery; Body Weight Changes; Eating Behavior; Body Fat Distribution; Exercise; Quality of Life
• Interventions: Behavioral: App-technology to increase physical activity

• Registration Number: NCT03480464
• Lead Sponsor: Karolinska Institutet

Brief Summary

The aim of this study is to investigate the effect of using new app-based technology to increase the level of physical activity, compared to conventional postoperative information given to patients undergoing bariatric surgery. The hypothesis is that the intervention, i.e. using the new technology, will have a greater positive effect on levels of physical activity and outcomes of weight loss than conventional postoperative information.

Detailed Description

Not available

Study Timeline

• Study First Submitted: 2017-09-06
• Study Start: 2017-11-16
• Study First Submitted QC: 2018-03-21
• Study First Posted: 2018-03-29
• Primary Completion: 2021-09-30
• Study Completion: 2021-09-30
• Status Verified: 2022-03
• Last Update Submitted: 2022-03-31
• Last Update Posted: 2022-04-01

Recruitment & Eligibility

• Status: COMPLETED
• Sex: All
• Target Recruitment: 158

Inclusion Criteria

• Accepted to bariatric surgery due to national guidelines, BMI>35 kg/m2
• 18 years of age or older
• Informed consent
• Ability to read and understand Swedish
• Own and use a smartphone

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Exclusion Criteria

• Disability preventing daily walking

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Study & Design

• Study Type: INTERVENTIONAL
• Study Design: PARALLEL

Arm && Interventions

Group	Intervention	Description
App-technology group	App-technology to increase physical activity	App-technology to increase physical activity Participants in the intervention group (App-technology) will use a newly developed smartphone application ("app") in which the participants are able to register their daily physical activity in bouts of 10 min and their intake if supplementary vitamins. They will also be able to set personal goals every week for the level (minutes) of physical activity and get feedback every week in whether they fulfilled the goal or not. They will also get feedback on the intake of supplementary vitamin intake.

Primary Outcome Measures

Name	Time	Method
Change in Physical activity level	Before surgery and 18 weeks, 6 months, 1 year, and 2 years after surgery.	counts/min from accelerometers

Secondary Outcome Measures

Name	Time	Method
Muscle mass	Before surgery, 6 weeks(intervention start) and 18 weeks, 6 months and 1 year after surgery.	kg
Hand grip	Before surgery, 6 weeks(intervention start) and 18 weeks, 6 months and 1 year after surgery.	kg
Self registered physical activity in the app	12 weeks, 6 to 18 weeks after surgery	minutes/day and minutes/week
Body weight	Before surgery, 6 weeks(intervention start) and 18 weeks, 6 months, 1 year, and 2 years after surgery.	kg
Percent Body Fat	Before surgery, 6 weeks(intervention start) and 18 weeks, 6 months and 1 year after surgery.	Percent body fat of total body weight
Body Mass Index	Before surgery, 6 weeks(intervention start) and 18 weeks, 6 months and 1 year after surgery.	BMI, kg/m2
Fat free mass	Before surgery, 6 weeks(intervention start) and 18 weeks, 6 months and 1 year after surgery.	kg
Total body water	Before surgery, 6 weeks(intervention start) and 18 weeks, 6 months and 1 year after surgery.	kg

Trial Locations

Locations (1)

Vrinnevi Hospital; 🇸🇪 Norrköping, Sweden