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

Table 3 Women who met versus did not meet physical activity guidelines ^a during 2 ^nd and 3 ^rd trimester

SenseWear® armband	Met PA guidelines ^a	Did not meet PA guidelines ^a	P-value ^b
Week 18	n = 21	n = 25
Total sleep (includes nighttime sleep and naps) (hrs∙d⁻¹)	7.0 ± 0.7	7.1 ± 1.0	0.82
Sedentary (hrs∙d⁻¹)	11.8 ± 1.7	12.9 ± 1.5	0.03
Light PA (hrs∙d⁻¹)	3.3 ± 1.3	3.0 ± 1.4	0.46
Total MET minutes (∙d⁻¹)	1981 ± 282	1724 ± 187	<0.001
Week 35	n = 13	n = 33
Total sleep (includes nighttime sleep and naps) (hrs∙d⁻¹)	6.8 ± 0.7	7.0 ± 0.7	0.46
Sedentary (hrs∙d⁻¹)	11.5 ± 2.2	13.4 ± 1.9	0.005
Light PA (hrs∙d⁻¹)	3.3 ± 1.1	2.5 ± 1.5	0.09
Total MET-minutes (∙d⁻¹)	1999 ± 314	1647 ± 199	<0.001

Significance was set at P < 0.0125. Values reported as mean ± standard deviation; PA: physical activity.
^a2008 Department of Health and Human Services prenatal physical activity guidelines; ^bIndependent t-tests with Bonferroni adjustment for multiple comparisons.

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