Table 2.

Sleep, SED, and MVPA Across Pregnancy Trimesters

Sleep, SED, and MVPA Measures	Pregnancy Trimesters			p Value
	First	Second	Third
PSQI sleep measures
Sleep duration, mean hours/day	7.1 ± 1.4‡	7.1 ± 1.5‡	6.5 ± 1.2*,†	<.001
Sleep efficiency, %§	84.9 ± 13.4‡	85.0 ± 12.4‡	80.8 ± 12.6*,†	.006
Global score, score‖	6.1 ± 3.0‡	6.0 ± 3.3‡	7.3 ± 3.5*,†	<.001
Poor sleep quality,¶	58 (48.7)‡	56 (49.6)‡	75 (66.4)*,†	<.001
ActivPAL3 micro measures
SED, % time/day	65.0 ± 10.4‡,†	63.0 ± 9.8*	63.3 ± 10.1*	.029
Total waking wear time, hours/day	15.0 ± 1.0	15.2 ± 1.1	15.0 ± 1.0	.239
Valid wear days, days	6.8 ± 1.4‡	6.4 ± 2.1	6.2 ± 2.3*	.029
ActiGraph GT3X measures
MVPA, % time/day	3.8 ± 1.9‡	3.6 ± 1.8‡	3.0 ± 1.7*,†	<.001
Total waking wear time, hours/day	14.7 ± 1.2	14.6 ± 1.2	14.6 ± 1.5	.567
Valid wear days, mean days	7.5 ± 1.4†	7.2 ± 1.1*	7.2 ± 0.9	.087

Abbreviations: MVPA, moderate-to-vigorous-intensity physical activity; PSQI, Pittsburgh Sleep Quality Index; SED, sedentary behavior.

Values are number (%) or mean ± standard deviation.

Bolded values are statistically significant (p < .05).

^*Indicates a significant difference from trimester 1 (p < .05).

^†Indicates a significant difference from trimester 2 (p < .05).

^‡Indicates a significant difference from trimester 3 (p < .05).

^§Possible score range 0%–100%, higher scores indicate better sleep efficiency.

^‖Possible score range 0–21, higher scores indicate poorer sleep quality.

^¶Defined as PSQI global score of >5.