Perception of inadequate sleep and the conscious awareness of its impact on functioning during the daytime may be sure signs of immediate postpartum mood disturbances.
The study has been published in the April 1 issue of the journal Sleep.
Results indicate that both objective and subjective nighttime sleep significantly worsened with decreased total sleep time and sleep efficiency after giving birth. However, variables related to the subjective perception of sleep and sleep-related daytime dysfunction were stronger predictors of postpartum mood. After giving birth, subjective total sleep time at night fell from 437 minutes to 348 minutes, and mean subjective sleep efficiency decreased from 79 percent to 66 percent. Seventeen participants (46 percent) experienced some deterioration of mood after delivery.
Lead author Bei Bei, DPsych, clinical psychologist at the University of Melbourne in Victoria, Australia, said that while pregnancy is a joyous and exciting time, it also exposes women to many stressors, including disturbed sleep.
"We were surprised that while objective sleep was not irrelevant, subjective perception of sleep shared a much stronger relationship with mood," said Bei. "Women who are concerned about their sleep and/or mood should speak to health care professionals about cognitive-behavioral therapy, which is effective for improving both sleep and mood."