Prolonged sedentary time and physical activity in workplace and non-work contexts: a cross-sectional study of office, customer service and call centre employees

Table 2 Sedentary time, prolonged sedentary bouts and physical activity of 180 employees during work and outside of work ^a

	All days			Work days only
	Adjusted mean (95% CI)		p	Adjusted mean (95% CI)		p
	Non-work days	Work days		Non-work hours	Work hours
Number of days	345	758		737	738
Mean wear time (hrs)	13.7	15.3		6.8	8.6
% of worn time spent ^b
All sedentary	62.9 (61.6, 64.1)	70.4 (69.5, 71.2)	<0.001	63.0 (62.2, 63.7)	77.0 (76.3, 77.6)	<0.001
Prolonged sedentary ≥20 min bouts	22.9 (21.1, 24.6)	29.6 (28.2, 31.1)	<0.001	23.8 (22.7, 24.9)	33.5 (32.1, 34.8)	<0.001
Prolonged sedentary ≥30 min bouts	14.4 (12.9, 16.0)	18.9 (17.6, 20.2)	<0.001	15.0 (14.0, 16.1)	21.5 (20.2, 22.7)	<0.001
Light -intensity physical activity	33.1 (31.9, 34.3)	25.0 (24.2, 25.8)	<0.001	30.3 (29.7, 31.0)	20.2 (19.6, 20.7)	<0.001
Moderate-vigorous physical activity	2.3 (2.1, 2.6)	3.7 (3.4, 4.9)	<0.001	4.3 (4.0, 4.7)	1.9 (1.7, 2.0)	<0.001

^a Table reports marginal mean and 95% CI from linear mixed models that account for repeated measures and adjust for workplace setting (office, customer service, call centre). Data were excluded for days with < 10 hours of wear (excludes n=13 participants).
^b Marginal means (95% CI) back-transformed for percentage worn time spent (sedentary [inverse log], in prolonged sedentary bouts of ≥20 minutes or ≥30 minutes, in light-intensity activity [log], and in MVPA (log of [MVPA % +0.001]).
Mean work time = 8.7 hours.

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