![]() ![]() ![]() These results improve our understanding of the interrelationships between different intensities of movement behaviours and several aspects of sleep in older adults.Īgeing is associated with an increased prevalence of sleep problems. There were no significant associations of time reallocations for wake time after sleep onset, length of awakenings, and sleep quality. Furthermore, reallocating 30 min of SB to LPA showed a significant association with decreased sleep efficiency. Moreover, a reallocation of 30 min between light physical activity (LPA) and MVPA was significantly associated with increased sleep efficiency. Replacing 30 min of SB with moderate to vigorous intensity physical activity (MVPA) was significantly associated with an increased number of awakenings. Device-measured physical activity data and both objective and subjective sleep data were collected from 439 adults aged 55+ years. This study examines the associations of statistically modelled time reallocations between sedentary time and different physical activity intensities with sleep outcomes using isotemporal substitution analysis. Although higher physical activity levels are associated with better sleep, the association between specific physical activity intensities and sedentary behaviour (SB) with sleep remains unclear. Physical activity has been proposed as an effective alternative treatment option for the increasing occurrence of sleep problems in older adults. ![]()
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