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 3 Sedentary time, prolonged sedentary bouts and physical activity for office (n=127), call centre (n=31) and customer service (n=23) employees during work hour ^a

	Adjusted mean (95% CI)			p
	Office	Call centre	Customer service
Number of work days	525	124	98
Mean wear time (hrs)	8.8	8.2	7.5
Mean work time (hrs)	8.9	8.2	7.5
% of worn time spent ^b
All sedentary	75.8 (74.5, 77.1)	83.4 (81.3, 85.2) †	73.7 (70.2, 76.8) ‡	<.0001
Prolonged sedentary, ≥20 min bouts	33.4 (30.8, 36.0)	42.5 (36.8, 48.2) †	20.6 (14.5, 26.7) †‡	<0.001
Prolonged sedentary, ≥30 min bouts	21.4 (19.0, 23.7)	29.7 (24.6, 34.7) †	9.6 (4.3, 15.0) †‡	<0.001
Light -intensity physical activity	20.6 (19.5, 21.8)	15.3 (13.6, 17.3) †	24.4 (21.5, 27.8) †‡	<.0001
Moderate-vigorous physical activity	2.4 (1.9, 2.8)	0.7 (0.4, 0.9) †	1.3 (0.8, 1.7) †‡	<.0001

† Different to office employees (p<0.05) ‡ Different to call centre employees (p<0.05).
^a Table of marginal means (95% CI) from linear mixed models that account for repeated measures and adjust for age (years), gender, BMI (overweight or obese: yes/no), marital status (married or defacto: yes/no), education (post school qualification: yes/no). Data were excluded for days with <75% of time at work unobserved (n=20 days) and for participants without self-reported covariate data (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].

ISSN: 1479-5868