Efficacy of a Brief Intervention on Reduction of Systolic Blood Pressure

"The brief counseling letter intervention aiming to reduce physical inactivity, sedentary time in leisure time as well as smoking is based on behavior change theories (Transtheoretical model of health behavior change and Health Action Process Approach).~The computerized intervention system includes up to six interactions with participants. Recurrent assessments are initiated by the system and provide data for scheduling the proceeding intervention steps and selection of relevant content. Physical activity, sedentary time, smoking, and motivational measures to change or maintain behaviors according to the recommendations will be monitored over time and used to provide feedback in the form of letters."