How central support built capacity to deliver a health‐promoting intervention for older adults in Canada

Most implementation frameworks note that a central support unit (CSU) is key to successful implementation and scale‐up of evidence‐based interventions (EBIs). However, few studies investigated core functions of CSUs—such as capacity building—to better understand their essential role in implementing EBIs at scale. Therefore, the aims of our study are to (1) describe the role that a CSU plays to build capacity in delivery partner organisations, to enable implementation and scale‐up of a health‐promoting intervention (Choose to Move [CTM]) for older adults, and (2) identify elements within capacity‐building strategies deemed essential to effectively implement CTM in diverse community contexts. CTM is a flexible, scalable, community‐based health‐promoting physical activity (PA) and social connectedness intervention for older adults. In 2018–2020, eight health and social service societies, rural or remote municipalities or community‐based organisations delivered 22 CTM programmes that served 322 older adults. We conducted in‐depth interviews with delivery partners (n = 23), and a focus group with the central support system (n = 4). CSU provided a sounding board to organisations to create buy‐in (adoption) and plan ahead. Essential elements within capacity‐building strategies included: a support unit champion, enhanced delivery partner skills, self‐efficacy and confidence; interactive assistance to answer questions and clarify materials. There is a key role for capacity‐building under the stewardship of the CSU to promote implementation success. Investigating specific elements within capacity‐building strategies that drive implementation success continues to be a relevant question for implementation science researchers, that deserves further attention.