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Understanding Primary Care Dietitians' Experiences and Perspectives on Weight Management Practice Using the COM-B

Amira Hassan1,2, Lynne Williams1,2,3, Megan E Rollo1

  • 1Curtin School of Population Health, Curtin University, Bentley, Western Australia, Australia.

Journal of Human Nutrition and Dietetics : the Official Journal of the British Dietetic Association
|September 24, 2025
PubMed
Summary
This summary is machine-generated.

Understanding dietitian behavior in weight management is key. Interventions should target capability, opportunity, and motivation to improve practice and client outcomes.

Keywords:
counsellingdietitianshealth behaviourweight management

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Area of Science:

  • Dietetics
  • Behavioural Science
  • Health Psychology

Background:

  • Weight management is a primary focus in dietetic practice.
  • Understanding the behavioral influences on dietitians is crucial for effective support.
  • The Capability, Opportunity, Motivation-Behaviour (COM-B) model provides a framework for analyzing behavior.

Purpose of the Study:

  • To explore the behavioral drivers influencing dietitians' weight management practice using the COM-B model.
  • To identify factors related to capability, opportunity, and motivation that shape dietitian behavior.

Main Methods:

  • Qualitative descriptive study with an interpretivist approach.
  • Semi-structured interviews conducted with primary care dietitians in Australia.
  • Content analysis of interview transcripts, mapped to the COM-B model.

Main Results:

  • Dietitians showed understanding of weight management complexity and used holistic approaches but faced challenges with clients' psychosocial needs (Capability).
  • System constraints and multidisciplinary environments impacted care, while digital solutions offered advantages (Opportunity).
  • Strong professional drive and client-centered strategies characterized dietitian motivation (Motivation).

Conclusions:

  • Targeted interventions are needed across all COM-B components to support dietitians.
  • Enhancing capability through training, improving opportunity via digital integration, and sustaining motivation through clinical pathways are recommended.
  • These strategies aim to improve dietitian practice and client-centered care in weight management.