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Table 3 Interaction of Aspire components and their behaviour change techniques with the determinants of behaviours

From: Mechanisms of change of a novel weight loss programme provided by a third sector organisation: a qualitative interview study

Determinant of behaviour

Function of intervention components

Underpinning behaviour change techniques

Intervention components and delivery methodsa

Intent

Establish

• Commitment

• Completion of application form (self-referral)

• Attendance at briefing event

• Agreement to attend 3 sessions a week over a 26 week period

• Competitive selection process

• Signing of contracts

Knowledge

Educate

• Instruction on how to perform the behaviours

• Big group sessions

• Small group sessions

• One-to-one sessions

• Communication via text and social media

Beliefs about capabilities

Motivate/ Persuade

• Goal setting

• Feedback

• Verbal persuasion

• Paradoxical instructions

• Information on/salience of health consequences

• Social comparison

• Demonstration of behaviour

• Modelling

• Anticipated regret

• Milestone challenges

• Weight loss targets

• Visual feedback (progress graphs)

• Verbal feedback (e.g. on food diary)

• Physical feedback (e.g. revisiting challenging activities)

• Feedback from family

• Case studies

• Letter writing

• Visits from past clients

• Social media

Enable

• Support (practical and emotional)

• Exposure

• Graded tasks

• Social media and text communication

• One-to-one sessions

• Small group sessions

• Milestone challenges

Social and environmental context

Restructure

• Restructuring the physical environment

• Restructuring the social environment

• Problem solving

• Support (practical)

• One to one sessions

• Family night

  1. aSee Additional file 1 for full schedule of intervention components and activities