Automaticity facets applied to screen-time sedentary behaviours and active commuting measured by accelerometers

Figures & data

Table 1. Selected sociodemographic, physical activity, and sitting-related characteristics of the sample.

	Frequency(%)	Means (SD)
Age, years		35.11 (12.32)
<25	34(27)
25-45	73(57)
>45	21(16)
Women	70 (55)
Civil status
Single	33(25.8)
Couple	85(66.4)
Cohabitation	7.8(7.8)
Diploma
No diploma	1(0.8)
Primary school	4(3.1)
High-school	26(20.3)
University	97(75.8)
Sport practice
Yes	93(72.7)
No	35(27.3)
Type of sedentary leisure activity
Reading	25(19.5)
Watching tv	24(18.8)
Playing electronic games	4(3.1)
Computer(i.e. internet, series, movies)	61(47.7)
Unspecified	14(10.9)
Automaticity of Screen-based sedentary behaviours		3.67(.97)
Lack of intentionality		3.75(.82)
Lack of controllability		2.61(.93)
Efficiency		3.67(.90)
Automaticity of Active Commuting		3.63(.65)
Lack of intentionality		4.10(.91)
Lack of controllability		2.85(1.04)
Efficiency		3.87(.90)
Accelerometer
Screen-based hours per day in sedentary behaviour ^a (n=75)		2.5(2.3)
Screen-based sedentary behaviours per day ^a		3.4(1.81)
Active commuting ^a minutes/day (n=84)
Active commuting behaviours per week		3.7(1.83)
Light Physical Activity minutes/day		39.28(58.63)
Moderate Physical Activity minutes/day		49.04(57.99)
Vigorous Physical Activity minutes/day		3.64(10.20)
Steps counts per day		8364.88(11054.92)

Note: Valid days are defined by convention as those with ≥ 10 h wear-time.

^a Detailed-log + Troiano algorithm used data from participant logs that make use of date, type of activity, and time (hour, minute, Am/Pm) that the monitor was put on and off.

SD= Standard Deviation.

Figure 1. Path model of automaticity facets of active commuting and screen-time sedentary behaviour, predicting objective measured physical activity and sitting time. Active Commuting sample (n= 84); Screen-based sedentary behaviour sample (n= 75). * p ≤ .05; ** p ≤ .01.

Table 2. Student t-test Results Comparing Participants Who Adopted Behaviours on Automaticity facets and Accelerometer outcomes.

	Adoption (n=84)		No adoption (n=44)
Active commuting	M	SD	M	SD	95% CI Mean difference		p	t	df
Automaticity	3.61	0.65	3.62	0.71	−0.24	0.27	0.91	0.11	126
Lack of intentionality	4.10	0.91	3.97	0.81	−0.46	0.20	0.42	−0.82	126
Lack of control	2.85	1.04	2.83	0.91	−0.38	0.33	0.88	−0.15	126
Efficiency	3.88	0.90	4.08	0.82	−0.11	0.51	0.21	1.26	126
Screen-based sedentary behaviour	Adoption (n=75)		No adoption (n=53)
Automaticity	3.29	0.59	3.30	0.74	−0.22	0.25	0.91	0.11	124
Lack of intentionality	3.67	0.82	3.81	0.95	−0.19	0.46	0.41	0.82	124
Lack of control	2.57	0.88	2.47	1.07	−0.44	0.24	0.57	−0.55	124
Efficiency	3.63	0.89	3.64	1.01	−0.34	0.35	0.97	0.04	124
Accelerometer time in minutes per week ^a
Light Physical Activity	589.61	174.67	504.34	126.60	−138.70	−31.83	<.001	−3.16	126
Moderate Physical Activity	448.97	143.76	334.64	101.62	−157.76	−70.90	<.001	−5.21	126
Vigorous Physical Activity	45.97	42.95	37.59	54.37	−27.20	10.44	0.38	−0.89	126
Steps counts per week	84892.3	43487.1	59005.5	19853.8	−36990.3	−14783.2	<.001	−4.614	126
Sedentary time	4310.01	1961.82	3646.71	2228.13	−1412.85	86.23	0.08	−1.75	126

^a Variables standardized to device wear time.

Table 3. Pearson correlations (r) of Active Commuting and Sitting-Time Sedentary Behaviour for automaticity and accelerometer.

	GMAS				Accelerometer
	1 AC/SB	2 AC/SB	3 AC/SB	4 AC/SB	5 AC/SB	6 AC/SB	7 AC/SB	8 AC/SB	9 AC/SB
1.Automaticity	1	.77**/.74**	.53**/.68**	.76**/.65**	.13/.20	-.04/-.19	.34**/-.09	-.02/-.11	.19/.04
2.Lack of intentionality		1	-.10/.25*	.67**/.31**	.07/.15	-.08/-.24*	.30**/-.17	.05/-.05	.19/-.06
3.Lack of controllability			1	-.05/.07	.21*/.30**	.05/-.09	22*/-.04	-.07/-.05	.10/-.09
4.Efficiency				1	-.03/-.04	-.07/-.06	.18/-.08	-.02/-.14	.10/26*
5.Screen-based SB					1	.06	.80**	.38**	.87
6. Light Physical Activity						1	.-.12	.07	.83
7. Moderate Physical Activity							1	.22*	.142
8.Vigorous Physical Activity								1	-.04
9.Steps counts									1

Note: AC= Active Commuting (n=84); SB= Sedentary Behaviour (n=75).

* p ≤ .05; ** p ≤ .01.