Intervention based on Transtheoretical Model promotes anthropometric and nutritional improvements - a randomized...

Area of Science:

• Public Health
• Behavioral Science
• Nutrition Science

Background:

• Primary Health Care (PHC) settings in Brazil face challenges in managing women's anthropometric and dietetic profiles.
• Behavioral change interventions are crucial for improving health outcomes in this demographic.

Purpose of the Study:

• To evaluate the impact of a Transtheoretical Model-based intervention on the anthropometric and dietetic status of women within a Brazilian Primary Health Care context.
• To assess the effectiveness of tailored, stage-matched interventions in promoting healthier lifestyle choices.

Main Methods:

• A randomized controlled trial was conducted involving women in Primary Health Care.
• The intervention group received 10 workshops grounded in the Transtheoretical Model, while the control group received usual care including physical activity and general nutrition education.
• Seventy-one women (mean age 57.9±11.7 years) completed the study.

Main Results:

• The intervention group demonstrated significant improvements in body perception, reduced body weight, and lower Body Mass Index (BMI) post-intervention.
• Participants in the intervention group exhibited decreased consumption of high-calorie and high-fat foods.
• Factors associated with weight reduction included higher per capita income, reduced protein and lipid intake, and dietary modifications like removing visible fat from meat and skin from poultry.

Conclusions:

• The Transtheoretical Model intervention effectively reduced the intake of high-calorie and high-fat foods, leading to positive changes in weight and body image.
• These findings underscore the applicability and benefits of utilizing the Transtheoretical Model within primary health care services for lifestyle modification.
• The study provides evidence for the successful integration of behavioral science principles into public health nutrition strategies.