Table 4.

Instrument overview: knowledge domain

Instrument and authors	Tool description: target group, Items and Scales	Construct(s) assessed	Validation	Overall strengths	Limitations
Cognitive domain
Level of knowledge of physical activity for health (adapted from Chapman’s questionnaire of levels of smoking knowledge). Fredriksson, Alley, Rebar, Hayman, Vandelanotte and Schoeppe (2018).56	Target group is the general population. 11 items/question divided in four subscales/levels.	The measure assesses the individual’s level of knowledge concerning physical activity. The four levels assessed include: (1) knowing that physical activity is beneficial for health and physical inactivity is harmful to health; (2) knowing that specific health conditions are related to physical inactivity; (3) knowing exactly how much physical activity is needed for health and (4) the probabilities of developing Physical inactivity related health conditions, knowing and accepting that the risks and benefits of physical activity (inherent in levels 1–3) apply to one’s own risk of developing such health conditions.	Not validated.	Relative new measurement, more research need.	No validation studies exist. May not be relevant to knowledge and understanding of physical activity.
Understanding Contemplators’ Knowledge and Awareness of the Physical Activity Guidelines. Piercy, Bevington, Vaux-Bjerke, Hilfiker, Arayasirikul and Barnett. (2020).57	Target group is the general population. Seven items.	The measure assesses knowledge of health benefits from physical activity and knowledge of physical activity dosage recommendations.	Not validated.	Relative new measurement, more research need.	No validation studies exist. May not be relevant to knowledge and understanding of physical activity.