Physical activity behavior change interventions based on the transtheoretical model: a systematic review.

Area of Science:

• Behavioral Science
• Health Psychology
• Public Health

Background:

• The Transtheoretical Model (TTM) is frequently applied to physical activity (PA) behavior change interventions.
• Previous reviews have not critically assessed the accurate representation of the TTM in these interventions.
• Questions exist regarding the TTM's appropriateness for PA behavior change.

Purpose of the Study:

• To critically examine TTM-based interventions for PA behavior change.
• To evaluate the accuracy with which interventions represent the TTM.
• To identify inconsistencies in the development and application of TTM-based interventions.

Main Methods:

• Review of existing literature on TTM-based PA interventions.
• Analysis of intervention development and implementation strategies.
• Assessment of how accurately each intervention reflects the dimensions of the TTM.

Main Results:

• Significant inconsistencies were found in the development and application of TTM-based interventions.
• Most interventions reported as TTM-based do not accurately represent all dimensions of the TTM.
• Sample characteristics and TTM utilization varied across reviewed interventions.

Conclusions:

• The efficacy of current TTM-based PA interventions remains undetermined due to inaccurate model representation.
• Further research is required to develop and implement interventions that accurately reflect the TTM.
• The appropriateness of the TTM for PA behavior change cannot be definitively concluded without accurate interventions.