Table 2

Summary of the core components of the SIT LESS manual

StepCore componentAimContent*
1 A
Risk factors
Patient educationTo introduce prolonged sitting as a risk factor for CVD progressionOnline supplemental figure S2-1A with CVD risk factors, verbal introduction of SB as one of the CVD risk factors and correcting possible misconceptions
1 B
Patient educationTo inform about facilitating role of CR in targeting CVD risk factorsVerbal explanation of CR and specifically targeting SB in an individually tailored CR programme
2 A
Patient educationTo explain SB with examples of several SB settingsOnline supplemental figure S2-2A1, an easy-to-understand figure with examples of sedentary everyday life situations
Online supplemental figure S2-2A2, an example of two daily schedules to illustrate that most part of the day is spent sitting (without noticing)
2 B
Detrimental health consequences of SB
Patient educationTo increase knowledge about the detrimental health effects of SBOnline supplemental figure S2-2B, an insightful figure to clarify the ways in which SB could lead to adverse health effects
2 C
Sitting less and regularly standing up improves health
Patient educationTo discuss (health) benefits of sitting less and interrupting prolonged sitting boutsOnline supplemental figure S2-2C, easy-to-remember graphs explaining how reduced sitting and regular sitting interruption can improve health status using colours and emoticons
2 D
More PA improves health
Patient educationTo explain (health) benefits of increasing regular PAOnline supplemental figure S2-2D, easy-to-remember graph to explain health benefits of increasing daily PA volumes using colours and emoticons
3 A
Reasons to sit less
Motivation and goal settingTo identify personal reasons for sitting less and enforce identified benefits/introduce new benefitsDrop-down list with common reasons to reduce SB to explore whether these are applicable to the patient
3 B
Concerns regarding sitting less
Motivation and goal settingTo identify personal concerns for sitting less and (if inaccurate) correct identified concerns/discuss solutionsDrop-down list with common concerns regarding reducing SB to explore whether these are applicable to the patient
4 A
Scenario selection and goal setting
Motivation and goal settingTo set the goal of daily sedentary time and provoke language of change using scenario selectionOnline supplemental figure S2-4A, four examples of activity tracker-based SB reports ranging from excellent to poor regarding goal achievement; patient sets a sitting goal, selects a (desired) scenario and elaborates why
5 A
Possibilities, difficult situations and solutions to sit less
Planning and self-efficacyTo determine possibilities to sit less in everyday life situations, discuss obstacles and define effective solutionsDrop-down list with common obstacles and corresponding solutions to explore whether these are applicable to the patient
5 B
A plan to sit less
Planning and self-efficacyTo define a clear action and coping plan to reduce SB and regularly break up sittingTemplates for action and coping plans (if–then) to effectively reduce SB
6 A
Confidence in the ability to accomplish the goal
Planning and self-efficacyTo determine the confidence in reducing SB (reaching the defined goal)Ruler (1–10 scale) to score confidence in reaching the reduced sitting goal; if confidence is low, residual barriers are explored and/or the goal is set less ambitious
7 A
Introduction of the activity tracker
Monitoring, learning, problem solving and maintenance of behaviour changeTo give an introduction of the activity tracker with smartphone application for monitoring SB and coaching in the home environmentLive demonstration of the functionalities of the activity tracker and smartphone application and introduce telephone consultations for coaching purposes to continue the behaviour change intervention in the home environment
8 A
Evaluation of SB report
Monitoring, learning, problem solving and maintenance of behaviour changeTo evaluate the SB over the past period, identify days when sitting goals were not achieved and explore the patient’s thoughtsPatient’s own SB report using the online dashboard; reinforce good periods and highlight discrepancies between the desired and actual SB with regard to the goal that is set
8 B
Learning, problem solving and maintenance of behaviour change
Monitoring, learning, problem solving and maintenance of behaviour changeTo identify patterns of success or failure reducing SB over the past period and to evaluate obstacles and solutions and define a clear action plan for the upcoming period; the patient continues monitoring at home using the activity tracker with smartphone application and coaching by telephone consultationsTemplates to discuss experienced obstacles and effective solutions to reduce SB; use the online dashboard to set the goal for the upcoming period, identify potential barriers and ways to overcome these, resulting in a concrete plan (what to do when)
  • *For the SIT LESS intervention manual including online supplemental figures S2-1A–S2-4A (see online supplemental file 2, SIT LESS intervention manual).

  • CR, cardiac rehabilitation; CVD, cardiovascular disease; PA, physical activity; SB, sedentary behaviour; SIT LESS, Sedentary Behaviour Intervention as a Personalised Secondary Prevention Strategy.