Table 2.
Schedule of assessments
| Visit | Screening | Baseline visit (− 7 + 14 days) | Follow-up (12 weeks) (− or + 14 days) |
|---|---|---|---|
| Expression of interest | x | ||
| Physical activity status: General Practice Physical Activity Questionnaire) [27] | x | ||
| Eligibility screening telephone call | x | ||
| Personal identifiers and demographic information | x | ||
| Current medications | x | ||
| Smoking history | x | ||
| Alcohol consumption | x | ||
| Mobility | x | ||
| Diseases/conditions | x | x | |
| Wrist worn accelerometer (worn for up to 8 days) (axivity) | x | x | |
| Anxiety and depression: HADS [38] | x | x | |
| Healthcare utilisation | x | ||
| Household income/composition | x | ||
| Productivity | x | ||
| Sedentary behaviours: Workforce Sitting Questionnaire [36] and sedentary behaviour item from the International Physical Activity Questionnaire [37] | x | x | |
| Enjoyment of physical activity: Physical Activity Enjoyment Scale [39] | x | x | |
| Self-efficacy for exercise and Exercise Self-efficacy Questionnaire [40] | x | x | |
| Habit strength (Snacktivity™ group only): The Self-Report Habit Index [41] | x | ||
| SnackApp™ engagement analytics (Snacktivity™ group only) | x | ||
| Heighta | x | ||
| Weight | x | x | |
| Body mass index (BMI) | x | x | |
| Waist circumference | x | x | |
| Lower limb muscle strength (Takei dynamometer squat position) | x | x | |
| Blood pressure | x | x | |
| Checklist of popular snacks (paper copy, Snacktivity™ group only) | x | ||
| Semi-structured interviews (Snacktivity™ intervention group and health care providers) | x | x | |
| Single item study feedback questions | x |
aTo allow for the calculation of BMI, height will be measured to the nearest 0.1 cm using SECA 213 stadiometers at baseline and follow-up