Initial Weight Status Moderates the Impact of Exercise Referral Schemes on Improving Patients' Body Mass Index

Area of Science:

• Public Health
• Exercise Science
• Obesity Research

Background:

• Elevated body mass index (BMI) is a significant public health concern.
• Exercise referral schemes (ERS) aim to increase physical activity and improve health outcomes.
• The moderating effect of baseline BMI on ERS effectiveness requires further investigation.

Purpose of the Study:

• To determine if baseline body mass index (BMI) influences BMI changes after completing an exercise referral scheme (ERS).
• To analyze the effectiveness of ERS across different baseline BMI categories.

Main Methods:

• Retrospective analysis of data from the National ReferAll Database.
• Included 634 adults who completed a community-based ERS with physical activity counseling and supervised exercise.
• Used mixed methods analysis of covariance and linear regression to assess BMI changes and the relationship between baseline BMI and BMI reduction.

Main Results:

• Baseline BMI significantly predicted BMI reduction (P < .001).
• Individuals with obesity classes I-III experienced significantly greater BMI reductions compared to the normal weight group (P < .001).
• No significant BMI difference was observed between normal weight and overweight participants (P = .207).

Conclusions:

• Exercise referral schemes are effective in improving BMI outcomes, particularly for individuals with higher baseline BMIs.
• ERS demonstrate potential as a scalable public health strategy for weight management.
• Findings support the continued development and refinement of ERS for promoting weight-related health improvements.