Implementing behaviour change theory and techniques to increase physical activity and prevent functional decline among adults aged 61-70: The PreventIT project.

Abstract
The health and wellbeing benefits of engaging in physical activity PA and of improving strength and balance are well documented The World Health Organization s recommendations of 150 min per week of moderate intensity physical activity have been adopted across the world in policy and practice recommendations However the number of older adults engaging in this level of PA remains low The European Project PreventIT has adapted the Lifestyle integrated Functional Exercise LiFE programme which reduced falls in people 75 years and over for a younger cohort aLiFE aLiFE incorporates challenging strength and balance agility tasks as well as specific recommendations for increasing physical activity and reducing sedentary behaviour in young older adults aged 60 70 years Personalised advice is given on how to integrate strength balance and physical activities into daily life aLiFE has been further developed to be delivered using smartphones and smartwatches eLiFE providing the opportunity to send timely motivational messages and real time feedback to the user Both aLiFE and eLiFE are behaviour change interventions supporting older adults to form long term physical activity habits PreventIT has taken the original LiFE concept and further developed the behaviour change elements explicitly mapping them to Social Cognitive Theory Habit Formation Theory and 30 Behaviour Change Techniques BCTs Goal setting planning prompts and real time feedback are used to deliver a person centred experience Over 1300 motivational messages have been written mapped to psychological theory BCTs and evidence regarding the importance of strength balance and PA A motivational assessment tool has been developed to enable us to investigate stated motivational drivers with actual performed behaviour within the feasibility Randomised Controlled Trial The PreventIT mHealth intervention focusses on behaviour change from initiation to long term maintenance addressing the different phases of adopting a healthier lifestyle As such it makes a strong contribution to the developing field of evidence based mobile health mHealth ABBREVIATIONS AND ACRONYMS
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