´Sit Less, Move More' at Work: mHealth Intervention on Office Employees With Diabetes Type 2.

´Sit Less, Move More' at Work: Impact of a mHealth Intervention on the Glycaemic Control and Anthropometric Profile of Office Employees With Diabetes Type 2. A Randomized Controlled Trial.

The objective of the study is measuring the impact of a ´sit less, move more' mHealth intervention at work on the glycaemic control and anthropometric profile of office employees with diabetes type 2 (DT2) at short, mid and long term.

A double-blind randomized controlled trial. Seven Primary Care Centers from Spain (n=5 Catalonia, n=2 Madrid), 2 hospitals (n=1 Catalonia, n=1 Madrid) and 2 companies (occupational health services; n=1 public, n=1 private) will participate in the study. In each center, physicians, nurses, endocrinologists and occupational physicians will recruit patients with DT2 who spend at least 55% of their working hours doing desk-based tasks (OSPAQ) and have a cellphone. Following the CONSORT Statement (2010), volunteers will be randomized into a control (CG) or intervention group (IG) by the research team using a computer program to generate the random sequence. 184 individuals are needed in each group. Main variables: fasting glucose levels, HbA1c, weight, height, BMI, waist circumference. Occupational sitting time and sitting time breaks will be measured using ActivPAL devices. Other variables: physical activity (IPAQ short), quality of life (EuroQool), presenteeism (WLQ), triglycerides, total cholesterol (LDL and HDL), blood pressure and sociodemographic variables.

Intervention: A mHealth program (13 wks) will progressively replace occupational sitting time with light physical activities. Participants from the CG will receive usual care. Multivariate analysis will assess changes over time (post intervention and at 6 months follow up) in the dependent variables; looking at differences between groups. Intention to treat will be applied.

Inclusion Criteria:

• DM2 diagnosed office employees according to international criteria.
• Doing sedentary tasks during at least a 55% of their daily work schedule (according to the Occupational Sedentary and Physical Activity Questionnaire: OSPAQ >55%).
• Having a cellphone .
• Having a minimum work contract of 18.5 hours per week.
• Being able to get up from the chair or to walk by themselves (without any help).

Exclusion Criteria:

• Not having a cellphone.
• Having some pathology/disability/injury which changes their ability and capacity to walk or getting up from the chair.
• Doing less than a 55% of the daily tasks in a sitting position according to the OSPAQ questionnaire.