Understanding the determinants of changing physical activity among older adults is crucial
for effective intervention development. The aim of this study was to review and update the …

Purpose Briefly review the current state of theorizing about volitional behaviour change and
identification of challenges and possible solutions for future theory development. Method …

This paper discusses challenges in utilizing findings and constructs from different (health
behavior) theories. There is a multitude of theories that can be used, but the question is what …

Background: For youth living with human immunodeficiency virus (HIV)/acquired
immunodeficiency syndrome (AIDS), nonadherence to antiretroviral therapy (ART) can lead …

Background Physical activity (PA) is beneficial in improving negative physical and
psychological effects of cancer and cancer treatment, but adherence to PA guidelines is low …

Purpose. Examine the effects of three iterative tailored feedback letters addressing smoking;
physical activity; and fruit, vegetable, and fat intake, and test the additional effects of …

Background Positive health beliefs and attitudes towards dementia and dementia risk
reduction may encourage adopting a healthy behaviour. Therefore, we aimed to investigate …

This paper aims to test the direct predictors of the theory of planned behaviour (TPB), action
planning and coping planning as predictors of changes in physical activity (PA) in 157 …

Background Several studies have reemphasized the role of action planning. Yet, little
attention has been paid to the role of plan enactment. This study assesses the determinants …

Objective: Low-cost (eg, computer-tailored) interventions with sustained effects are needed
to increase and maintain physical activity in older adults. This study examined the long-term …