Adherence to physical activity guidelines in mid-pregnancy does not reduce sedentary time: an observational study

Table 1 Sedentary behavior and physical activity during the 2 ^nd and 3 ^rd trimester (n = 46)

SenseWear® armband	Gestation length (weeks)		P-value ^a
SenseWear® armband	Week 18	Week 35	P-value ^a
Nighttime sleep (hrs∙d⁻¹)	6.8 ± 0.8	6.7 ± 0.7	0.51
Naps (min∙d⁻¹)	13 ± 15	14 ± 14	0.66
Total sleep (hrs∙d⁻¹)	7.0 ± 0.9	7.0 ± 0.7	0.6
Sedentary (excludes all sleep) (hrs∙d⁻¹)	12.4 ± 1.7	12.9 ± 2.2	0.07
Time awake in sedentary behavior (%)	76 ± 11	78 ± 13	0.05
Light PA (hrs∙d⁻¹)	3.1 ± 1.4	2.7 ± 1.5	0.05
Accumulated moderate PA (min∙d⁻¹)	48 ± 42	46 ± 57	0.75
Accumulated vigorous PA (min∙d⁻¹)	5 ± 10	2 ± 4	0.02
Moderate-vigorous PA in ≥ 10 minute bouts (min∙d⁻¹)	32 ± 41	27 ± 43	0.1
Moderate-vigorous PA MET-minutes in ≥ 10 minute bouts (min∙d⁻¹)	150 ± 197	113 ± 179	0.02
Total MET-minutes (∙d⁻¹)	1841 ± 266	1747 ± 283	<0.001

PA, physical activity; MET, metabolic equivalent of task. Significance was set at P < 0.05. Values reported as mean ± standard deviation. ^aPaired t-test.

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