Prediction of Physical Activity Level Using Processes of Change From the Transtheoretical Model: Experiential,Behavioral,or an Interaction Effect?

Abstract

Purpose:

The purpose of the present study was to compare prediction of physical activity (PA) by experiential or behavioral processes of change (POCs) or an interaction between both types of processes.

Design:

A cross-sectional study.

Setting:

This study was conducted using an online questionnaire.

Participants:

A total of 394 participants (244 women, 150 men), with a mean age of 35.12 ± 12.04 years and a mean body mass index of 22.97 ± 4.25 kg/m² were included.

Measures:

Participants completed the Processes of Change, Stages of Change questionnaires, and the International Physical Activity Questionnaire to evaluate self-reported PA level (total, vigorous, and moderate PA).

Analysis:

Hierarchical multiple regression models were used to test the prediction of PA level.

Results:

For both total PA (β = .261; P < .001) and vigorous PA (β = .297; P < .001), only behavioral POCs were a significant predictor. Regarding moderate PA, only the interaction between experiential and behavioral POCs was a significant predictor (β = .123; P = .017).

Conclusion:

Our results provide confirmation that behavioral processes are most prominent in PA behavior. Nevertheless, it is of interest to note that the interaction between experiential and behavioral POCs was the only element predicting moderate PA level. Experiential processes were not associated with PA level.

Keywords

processes of change transtheoretical model physical activity behavioral processes

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