Diurnal patterns of objectively measured physical activity and sedentary behaviour in older men

摘要: Background: Physical activity (PA) levels among older adults are generally low and sedentary behaviour (SB) very common; increasing PA reducing SB could have appreciable health benefits. Quantifying patterns through the day help in defining strategies for change. We examined within variations whether these varied by demographic factors status. Methods: Men aged 71-91 years participating an established UK population-based cohort study were invited to wear a GT3x Actigraph accelerometer over hip one week 2010-12. Percentages of time spent (SB, 1040 CPM) derived. Multilevel models used estimate associations between status SB, LIPA MVPA. Results: 1455 3137 men (46.4 %) participated provided adequate data. 73 % 23 4.5 MVPA (619, 197 39 min per respectively). The percentage was highest morning, peaking at 10-11 am (8.4 %), then declining until evening, with exception small increase 2-3 pm. followed similar pattern. Conversely, lowest morning increased throughout day, 9 pm (88 %). who older, did not use active transport, had mobility limitations, obese, depressed, more chronic conditions, smokers lower impacts age, obesity, limitations diseases on LIPA, marked than afternoon evening. Conclusions: Levels (peak am) decrease during day. increases course peak Interventions encourage be physically may need take account current patterns, aiming prolong bouts and/or evening hours.