Table 2.

Coding framework: subthemes and key concepts

COM-B	Framework	Subtheme	Concepts	Contextual domain
Capability	Psychological	Knowledge	Lack of knowledge, acquisition, resources	Healthcare provision/community
		Cognitive difficulties	Denial, memory, language barriers, inability to focus	Healthcare provision
		Previous experience	Family history, previous diagnosis	Family life
	Physical	Existing capacity	Predisposition to exercise or not	*
		Physical restriction	Medical conditions, overweight, mobility, postnatal complications, fatigue	*
Opportunity	Social	Influence of family	Childcare support, encouragement, advice, isolation, negative influence, mealtimes	Family life
		Social belonging	Peer support groups, virtual support, socialising while exercising	Community
	Social/physical	Competing priorities	Time restrictions, family first, self-neglect	Family life
	Physical	Healthcare environment	Importance of primary/secondary care, issues of availability, healthcare process, negative interactions with staff	Healthcare provision
		Convenience	Community resources, work/other duties incorporate exercise, availability of apps	Community
		Financial	Affordability, subsidies	*
Motivation	Reflective	Plans	Creating solid plans to promote behaviour change	Individual
		Intentions	Indenting to change behaviour	Individual
		Monitoring	Tracking behaviour, positive reinforcement, diet restriction, goal setting	Individual
	Automatic	Emotions	Anxiety, overwhelmed, shock, worry, concern, depression	Individual
		Disengaged	Postponement, dislike, denial	Individual

*Subthemes not categorised into a contextual domain.

COM-B, capability, opportunity, motivation and behaviour.