NEAT - Prevention and Treatment of Overweight and Obesity.

The intervention group will receive a treadmill workstation for 12 months. They will use this at self-selected speed and will be recommended to use this for at least 1 hour per day. Participants in the control group will continue with conventional office work at their regular desk. Participants in the intervention group will receive four boosting e-mails during the study period, in which they will be encouraged to use the treadmill.

Participants in both groups will receive a health talk with recommendations about diet and physical activity habits.