Table 1 Description of hypothesised social-cognitive mediators and associated intervention strategies
Hypothesised mediators | Scale description | Response | Targeted intervention strategies | Internal consistency (Cronbach’s alpha) |
|---|---|---|---|---|
Perceived behavioural control | Perceived control over sitting less at work. E.g. It is my choice whether I stand up or sit at my desk while at work” | Five items; 1–5 Likert scale. Strongly disagree - Strongly agree | - Participant brainstorming session to identify strategies to reduce sitting. - Establishing new workplace policies & practices (e.g. standing meetings, no emails within organisational units) - Installation of height-adjustable workstations - Environmental changes to encourage movement (e.g. signs at lifts prompting use of stairs) | 0.72 |
Barrier self-efficacy | Confidence about overcoming barriers to sitting less at work. E.g. How confident would you have been that you could have stood up during meetings at work, even though no one else was. | Nine items; 1–5 Likert scale. Not at all confident - Very confident | - SMART goal setting for use of workstations with health coach - Problem solving with health coach to overcome barriers - Encouraging use of prompts (e.g. stand when telephone rings) - Encouraging use of strategies (e.g. “imails” instead of emails) | 0.92 |
Perceived organisational norms | Perceived organisational/social support for sitting less at work. E.g. My workplace is committed to supporting staff choices to stand or move more at work | Eight items; 1–5 Likert scale. Strongly disagree - Strongly agree | - Organisational/upper management support - Team champions acting as role models and spokespersons - Tailored management emails sent from team champions - Establish new workplace policies & practices (e.g. standing meetings, no emails within organisational units) | 0.81 |
Knowledge | Knowledge about the health effects of prolonged sitting. E.g. Sitting for most of the time at work is bad for my health | Five items; 1–5 Likert scale. Strongly disagree - Strongly agree | - Information session on the health consequences of excessive sitting - Health coaching - Management emails with information on health effects | 0.50 |