Table 1.

Definitions used.

Term	Definition
Contexts	‘The physical, social, political or organisational setting in which an intervention was evaluated or in which it was implemented’ (p119, Rychetnik et al., 2002)
Mechanisms	Those processes which described how intervention activities, and participants' interactions with them trigger change. These may be measureable or hidden (latent). In the literature there is considerable debate about how mechanisms are conceptualised and identified (Dalkin et al., 2015) and during the extraction we further separated two parts of mechanisms: the resources (what the intervention did) from the reasoning or process of change (how people or populations responded).
Outcomes	Those which were subject of the main evaluative study (e.g. physical activity or use of the new environment or infrastructure), or intermediate outcomes which were necessary for changes in the physical activity or use, or subsequent outcomes which followed from use or changes in physical activity