Journal Article

InterMob: a 24-month randomised controlled trial comparing the effectiveness of an intervention including behavioural change techniques and free transport versus an intervention including air pollution awareness-raising on car use reduction among regular car users living in Grenoble, France

Duché, Sarah, Sarrazin, Philippe, Risch, Anna, Juen, Patrick, Tabaka, Kamila, Institute for Advanced Biosciences / Institut pour l'Avancée des Biosciences (Grenoble) (IAB) ; Centre Hospitalier Universitaire [CHU Grenoble] (CHUGA)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Etablissement français du sang - Auvergne-Rhône-Alpes (EFS)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA), Ployon, Estelle, Pacte, Laboratoire de sciences sociales (PACTE) ; Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA)-Sciences Po Grenoble - Institut d'études politiques de Grenoble (IEPG) ; Université Grenoble Alpes (UGA), Bouscasse, Hélène, Teran-Escobar, Claudia, ANR-15-IDEX-0002,UGA,IDEX UGA, Lacoste, Lilas, Sport et Environnement Social (SENS) ; Université Grenoble Alpes (UGA), Chalabaev, Aïna, Mathy, Sandrine, Chardonnel, Sonia, Laboratoire d'Economie Appliquée de Grenoble (GAEL) ; Centre National de la Recherche Scientifique (CNRS)-Institut Nat

2022

Overview

Background: Frequent car use contributes to health and environmental issues such as air pollution, climate change and obesity. Active and sustainable mobility (bike, walk, public transport, car sharing) may address these issues. Different strategies have been implemented in past research, involving hard levers, aimed at modifying the economical or geographical context (e.g., free public transport), and soft levers, aimed at modifying psychological processes (e.g., personalised transport advice). However, few studies have combined both hard and soft levers. In addition, few have used robust methodologies (e.g., randomised controlled trials), followed behavioural changes in the longterm, and been anchored in behaviour change theories. InterMob aims to address these limits by implementing a 24-month randomised controlled trial including hard and soft levers. The objectives of InterMob are to a) evaluate the effectiveness of an experimental arm versus an active controlled arm, and b) identify the processes of mobility change.Methods: Regular car users living in Grenoble (N = 300) will be recruited and randomised to one of the two arms. The experimental arm consists in a six-month intervention combining hard levers (free access to transport/bikes), and soft levers (e.g., personalised transport advice). The control arm consists in a six-month intervention aimed at raising awareness on air pollution and its health effects. Both arms will include eight evaluation weeks (spread out over 24 months) based on a GPS, an accelerometer, and a pollution sensor. Moreover, participants will complete mobility logbooks and surveys measuring psychological constructs, socio-economical, and socio-spatial characteristics.Discussion: InterMob will assess the effectiveness of two interventions aimed at reducing car use within regular car users in the short-, mid- and long-term. Moreover, InterMob will allow to better understand the psychological processes of behaviour change, and the socio-economical and geographical conditions under which the intervention is efficient in reducing car use. Finally, the benefits of mobility change in terms of physical activity, quality of life, and exposure to pollution will be quantified.Trial registration: Clini calTr ials. gov: NCT05096000 on 27/10/2021 (retrospectively registered).

• Publisher: CCSD,BioMed Central,BioMed Central Ltd,Springer Nature B.V,BMC
• Subject: Accelerometers / Active control / Active mobility / Air pollution / Automobiles / Behavior / Bicycles / Biostatistics / Car sharing / Car use / Climate change / Cognitive science / Customization / Daily mobility / Discussion groups / Economics and Finance / Effectiveness / Environmental aspects / Environmental Health / Epidemiology / Ethics / Evaluation / Geography / Health aspects / Health promotion / Humanities and Social Sciences / Interdisciplinary aspects / Intervention / Levers / Life expectancy / Life Sciences / Literature reviews / Logbooks / Medicine / Medicine & Public Health / Methods / Metropolitan areas / Mobility / Physical activity / Pollution dispersion / Psychology / Public Health / Public transportation / Quality of life / Santé publique et épidémiologie / Sensors / Sociodemographics / Spatial organisation / Study Protocol / Sustainable mobility / Vaccine
• ISBN: 0008545082000