Impacts of physical activity, sedentary behaviour, and sleep on depression symptoms in Canadian older adults 65 years of age and above: a compositional data analysis of the Canadian Longitudinal Study on Aging

Table 6 Estimated change in depression symptoms as measured by CES-D score scale that would occur by displacing 30-min from one movement behaviour to remaining behaviours proportionally

Movement behaviour	Remove 30-min of column behaviour and add to remaining behaviours	Add 30-min to column behaviour from remaining two behaviours
MVPA	0.23 (0.14, 0.33)	– 0.02 (– 0.12, 0.07)
LIPA	− 0.01 (− 0.10, 0.09)	0.01 (− 0.09, 0.10)
SB	− 0.02 (− 0.11, 0.07)	0.02 (− 0.08, 0.11)
Sleep	0.02 (− 0.07, 0.11)	− 0.02 (− 0.11, 0.07)

Data presented as estimated points change in CES-D score (95% confidence interval). All estimates adjusted for age, sex, race, employment status, education level, marital status, smoking status, alcohol consumption, diet quality score, comorbidity burden score, baseline depression symptoms. Values reflect estimated points change in CES-D score with re-allocating time from one behaviour to the remaining movement behaviours proportionally (or vice versa) using the mean movement behaviour composition as the reference. For example, replacing 30-min of MVPA with 6.25-min LIPA, 8.75-min SB and 15-min sleep would result in an increase of 0.23 points in depression symptoms. Lower CES-D score indicates less depression symptoms, higher score indicates more depression symptoms. MVPA moderate-to-vigorous physical activity, LIPA light-intensity physical activity, SB sedentary behaviour

ISSN: 2731-4391