SedestActiv Project: Intervention to Reduce Diary Hours of Sitting Time in Overweight and Obese Patients (SedestActiv)
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ClinicalTrials.gov Identifier: NCT01729936 |
Recruitment Status : Unknown
Verified February 2014 by Fundacio d'Investigacio en Atencio Primaria Jordi Gol i Gurina.
Recruitment status was: Recruiting
First Posted : November 21, 2012
Last Update Posted : February 10, 2014
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Primary care centres are a key setting to treat people with overweight and moderate obesity. There is growing evidence that sitting for a long time is negatively associated with people's health. Interventions with the aim of reducing daily time of sedentary activities can be an effective strategy to increase daily energy expenditure. To improve the effectiveness of programmes promoting physical activity in primary care we need some clear action protocols that can be easily integrated in the daily routines of primary care professionals.
Objective. The objective of the study is to evaluate the effectiveness of a six-moth primary care intervention to reduce diary hours of sitting time in overweight and obese sedentary patients, as well as to increase their weekly caloric spend.
Methods. The design of the study is a simple randomized controlled trial. Ten primary care centers will be invited to participate and will be randomized into control (CG) and intervention group (IG). Each professional will randomly invite to participate voluntarily moderate obese or overweight patients (BMI: 25-34,9 kg/m2) of both sexes, aged between 25 and 65 years old, who are 6 or more than 6 hours daily sitting. A total of 400 subjects (200 individuals in each group) are needed. In addition, 50 subjects with fibromyalgia will be included in the study to know the feasibility of the intervention among them.
The main dependent variable (sitting times) will be measured with an ActivPAL during first and last intervention week. There will be a follow up after 3, 6 and 12 months of the end of the intervention. Other variables included in the study: number of steps walked, subjective level of physical activity, weight, height, BMI, skinfolds, waist circumference, triglycerides, total cholesterol, (LDL and HDL), glucose, sociodemographic variables, blood pressure and quality of life related to health. A descriptive analysis of all variables and a multivariate analysis to assess differences among intervention and control group will be undertaken. Multivariate analysis will be carried out to assess time changes of dependent variables. All the analysis will be done under the intention to treat principle.
Condition or disease | Intervention/treatment | Phase |
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Overweight Obese Sedentary | Behavioral: Sitting time Change Intervention | Not Applicable |
Study Type : | Interventional (Clinical Trial) |
Estimated Enrollment : | 450 participants |
Allocation: | Randomized |
Intervention Model: | Parallel Assignment |
Masking: | Double (Investigator, Outcomes Assessor) |
Primary Purpose: | Prevention |
Official Title: | Effectiveness of an Intervention to Reduce Diary Hours of Sitting Time in Overweight and Obese Patients (SEDESACTIV):Simple Randomized Controlled Trial |
Study Start Date : | June 2012 |
Estimated Primary Completion Date : | February 2014 |
Estimated Study Completion Date : | December 2016 |
Arm | Intervention/treatment |
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Experimental: Sitting time Change Intervention
Sitting time Change Intervention: recommendation to substitute Sitting time by doing the regular activities standing or walking. Duration: 6 month. Frequency: 1 time each 15 days during the first 4 month and 1 time each month the last 2 months. |
Behavioral: Sitting time Change Intervention
Intervention to find alternatives to substitute sitting time by doing the regular activities standing or walking.
Other Name: SedestActiv Intervention |
No Intervention: Active Control
Control visits to the Primary Health Care Center
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- To assess the effectiveness of a 6-month primary care intervention to reduce diary hours of Sitting time in overweight and obese patients, as well as to increase their weekly caloric spend [ Time Frame: Baseline-6-9-12 and 18 month ]In this part of the study will use two measure tools: 1) A sitting time test during a working day and during the weekends (Marshall Test). 2) The activPal device will measure the sitting, stand and walking minutes and Mets expended during a week period.
- Number of steps walked [ Time Frame: Baseline-6-9-12 and 18 month ]
- Subjective level of physical activity [ Time Frame: Baseline-6-9-12 and 18 month ]
- Quality of life related to health [ Time Frame: Baseline-6-9-12 and 18 month ]
- Blood pressure [ Time Frame: Baseline-6-9-12 and 18 month ]
- Skinfolds and waist circumference [ Time Frame: Baseline-6-9-12 and 18 month ]
- Triglycerides, total cholesterol and glucose [ Time Frame: Baseline-6-9-12 and 18 month ]

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Ages Eligible for Study: | 25 Years to 65 Years (Adult, Older Adult) |
Sexes Eligible for Study: | All |
Accepts Healthy Volunteers: | No |
Inclusion Criteria:
- Overweight and moderate obese patients (BMI: 25-34,9 kg/m2).
- Be 6 or more than 6 hours daily sitting.
- Able to walk and stand up from a chair unaided.
- Subjects who can guarantee a year continuity in the study.
Exclusion Criteria:
- Recommended contradictions to advising physical activity to overweight and obese people.
- Have an obesity surgical operation.

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.
Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT01729936
Spain | |
IDIAP Jordi Gol | Recruiting |
Barcelona, Spain | |
Contact: Carme Martín-Borràs sedestactiv@gmail.com |
Principal Investigator: | Martínez R Elena | Institut Català de la Salut |
Responsible Party: | Fundacio d'Investigacio en Atencio Primaria Jordi Gol i Gurina |
ClinicalTrials.gov Identifier: | NCT01729936 |
Other Study ID Numbers: |
PI11/01082 |
First Posted: | November 21, 2012 Key Record Dates |
Last Update Posted: | February 10, 2014 |
Last Verified: | February 2014 |
Sitting time Overweight Obese Primary Health Care |
Overweight Overnutrition Nutrition Disorders Body Weight |