Active choice 1 Decision making 1 Inactive Adults 1 Intention 1 Physical activity 1 Process evaluation 1 Web-based intervention adult 1 article 1 controlled study 1 decision making 1 exercise 1 female 1 follow up 1 gender 1 human 1 human experiment 1 major clinical study 1 male 1 outcome assessment 1 personal value 1 physical activity 1 practice guideline 1 questionnaire 1 randomized controlled trial 1 sensitivity analysis 1 web-based intervention 1