Detecting sleep and physical activity changes across the perinatal period using wearable technology

Area of Science:

• Perinatal Health
• Sleep Science
• Exercise Physiology

Background:

• Sleep quality significantly declines during pregnancy, particularly in the third trimester.
• While sleep duration may remain stable, sleep quality is substantially impaired.
• Understanding perinatal sleep changes and physical activity's impact is crucial.

Purpose of the Study:

• To investigate changes in sleep patterns throughout the perinatal period.
• To determine the influence of physical activity on sleep quality in pregnant women.
• To explore the relationship between different intensities of physical activity and sleep.

Main Methods:

• 18 physically active women aiming for conception participated.
• WHOOP straps (fitness monitors) tracked sleep and activity data during the perinatal period.
• Data included time awake, deep sleep duration, and moderate-to-vigorous physical activity (MVPA).

Main Results:

• Women maintained physical activity levels during and after pregnancy.
• Moderate-to-vigorous physical activity was positively associated with increased deep sleep hours during pregnancy.
• Increased overall physical activity also correlated with improved deep sleep, though this effect diminished postpartum.

Conclusions:

• Wearable technology offers a non-invasive method for tracking perinatal sleep and activity.
• Engaging in moderate-to-vigorous physical activity positively impacts sleep during the perinatal period.
• Findings can inform recommendations for physical activity to enhance sleep for expectant mothers.