Sarcopenia and sleep in individuals with chronic obstructive pulmonary disease.

Objective: To verify the relationship between sarcopenia and sleep in individuals with chronic obstructive pulmonary disease (COPD).

Methods: Individuals with COPD were cross-sectionally assessed for lung function (spirometry), sleep (both subjectively [Pittsburgh Sleep Quality Index, PSQI] and objectively [Actiwatch sleep monitor]) and the presence of sarcopenia (handgrip strength by dynamometry). All tests were carried out in accordance with international standards.

Assessment of sedentary behaviour in individuals with COPD: how many days are necessary?

Objective: The objective of the present study was to define the minimum number of monitoring days required for the adequate cross-sectional assessment of sedentary behaviour in individuals with chronic obstructive pulmonary disease (COPD).

Methods: In this cross-sectional study, the sedentary behaviour of individuals with COPD was assessed using two physical activity monitors during awake time for seven consecutive days. Time spent per day in activities requiring ≤1.

Tossing and turning: association of sleep quantity-quality with physical activity in COPD.

The association between characteristics of sleep and physical activity in daily life (PADL) has not yet been investigated in depth in subjects with COPD. This study evaluated whether time spent per day in physical activity (PA) and sedentary behaviour are associated with sleep quantity and quality in this population. Sleep and PADL were objectively assessed by an activity monitor for 7 days and analysed on a minute-by-minute basis.

Physical activity and inactivity among different body composition phenotypes in individuals with moderate to very severe chronic obstructive pulmonary disease.

Background: The phenotype profiling of individuals with chronic obstructive pulmonary disease (COPD) according to impairments in body composition and level of physical activity in daily life (PADL) needs to be determined.

Objective: To verify if individuals with COPD classified as physically active/inactive present different characteristics within different body composition phenotypes.

Methods: Individuals with COPD were cross-sectionally stratified into four groups according to fat-free and fat mass indexes: Normal Body Composition (NBC), Obese (Ob), Sarcopenic (Sarc), and Sarcopenic/Obese (Sarc/Ob).