Almost all felt they had benefitted , irrespective of their change in step-count , and that primary care was an appropriate setting.Important facilitators included a desire for a healthy lifestyle , improved physical health , enjoyment of walking in the local environment , having a flexible routine allowing for an increase in walking , appropriate self and external monitoring and support from others.Important barriers included physical health problems , an inflexible routine , work and other commitments , the weather and a mistrust of the monitoring equipment.BCTs that were reported to have the most impact included : providing information about behaviour-health link ; prompting self-monitoring and review of goals and outcomes ; providing feedback ; providing specific information about how to increase walking ; planning social support/change ; and relapse prevention .