Background The aim of this study is to review accelerometer wear methods and correlations
between accelerometry and physical activity questionnaire data, depending on participant …

Despite improvements in cardiovascular care in recent decades, cardiovascular disease
(CVD) remains a leading cause of death worldwide. At its core, CVD is a largely preventable …

Sleep dysregulation is a feature of dementia but it remains unclear whether sleep duration
prior to old age is associated with dementia incidence. Using data from 7959 participants of …

Recent technological advances have transformed the research on physical activity initially
based on questionnaire data to the most recent objective data from accelerometers. The shift …

Background Physical activity has not been objectively measured in prospective cohorts with
sufficiently large numbers to reliably detect associations with multiple health outcomes …

Being a morning person is a behavioural indicator of a person's underlying circadian rhythm.
Using genome-wide data from 697,828 UK Biobank and 23andMe participants we increase …

Background Sleep duration has been shown to be associated with individual chronic
diseases but its association with multimorbidity, common in older adults, remains poorly …

Wrist worn raw-data accelerometers are used increasingly in large-scale population
research. We examined whether sleep parameters can be estimated from these data in the …

Physical activity and sleep duration are established risk factors for many diseases, but their
aetiology is poorly understood, partly due to relying on self-reported evidence. Here we …

Background Combinations of lifestyle factors interact to increase mortality. Combinations of
traditional factors such as smoking and alcohol are well described, but the additional effects …