Table 2.

Description of the behavioural change intervention sessions

No. Week	Topics covered
Week 1: Lifestyle choices	• Motivational interview to establish an educational diagnosis • Identify the behaviour stage regarding physical activity • Raise awareness of physical activity benefits • Provide the Fitbit flex 2 and ask them to wear it for at least 3 days each week
Week 2: Why become physically active?	• Raise awareness of the physical activity international recommendations • Deepen the knowledge about the physical activity benefits for patients with asthma • Review Fitbit flex 2 data of the past week and set one smart weekly goal (number of steps) • Establish the action planning (goal) and sign a contract • Evaluate the confidence of patients in achieving the goal (self-efficacy) • Explain about the use of the workbook, diary and vibration alert
Week 3: Sedentary behaviour	• Raise awareness of the risks of prolonged uninterrupted periods of sitting • Ask them to start monitoring their sitting time (diary in a workbook) • Discuss strategies to stand up/break up the sedentary time, according to the Fitbit flex 2 vibration function • Review achievement (using the diary and Fitbit flex 2 data) of the current goal • Discuss progress of the current goal • Set one smart weekly goal (number of steps)
Week 4: Dealing with barriers	• Dealing with barriers (as part of action and coping planning) • Brainstorm the main barriers and possible solutions/modifications • Discuss preferred activities • Invite participants to come up with ideas for walking (progression in duration/intensity) • Congratulate patients on any success (positive reinforcement) and ask them to reflect on any difficulties • Review achievement (using the diary and Fitbit flex 2 data) of the current goal • Progress the current smart goal (number of steps and sedentary behaviour)
Week 5: Self-control	• Facilitate self-control (how to self-monitor the negative and positive behaviours regarding PA) • Identify the benefits acquired with the lifestyle change and reinforce the commitment to change • Invite participants to come up with ideas to break up the sedentary time • Review achievement (using the diary and Fitbit flex 2 data) of the current goal • Progress current goal(s) as able/required
Week 6: Setting additional goal	• Review initial goal and discuss the progress of this goal (challenges) • Evaluate the confidence about achieving the new goal (self-efficacy) • Reinforce the health benefits of increased participation in PA and of breaking up sedentary time • Congratulate any success and reflect on any difficulties • Review achievement (using the diary and Fitbit flex 2 data) of the current goal • Set a new smart goal as able/required
Week 7: Being rewarded	• Identify the behaviour stage regarding physical activity • Discuss the change (or not) that was achieved, as well as the benefits acquired with the new lifestyle • Discuss positive reinforcement • Review achievement (using the diary and Fitbit flex 2 data) of the current goal • Set a final goal (number to steps)
Week 8: Goal balance	• Final motivational interview (goal setting, benefits acquired and strategies to overcome barriers) • Reinforce the importance of following through with these changes Establish a long-term goal to stay physically active