Maternal Physical Activity and Gut Microbiota Data from a Preliminary Pregnancy Cohort

68 pregnant women with Fitbit activity data and third-trimester stool 16S rRNA sequencing. The data shows a median of around 5000 steps per day and a majority of activity minutes classified as sedentary. This preliminary investigation by Sara Santarossa was last updated in April 2026.

Use Cases

• Analyzing associations between sedentary time and gut microbiota composition based on beta diversity metrics like Weighted UniFrac and Bray-Curtis.
• Investigating differential abundance of specific bacterial taxa like Prevotella and Acidaminococcus in relation to physical activity levels.
• Examining the relationship between objectively measured step counts and alpha diversity metrics such as Faith's phylogenetic diversity.
• Studying demographic and activity patterns in a cohort where 56% of participants were Black.

Strengths

• Data includes objective physical activity measurements from Fitbit Charge wearables for 68 pregnant women.
• Microbiome profiling uses 16S rRNA sequencing, with results for multiple alpha and beta diversity metrics provided.
• Analysis includes covariate-adjusted statistical models and false discovery rate correction for differential abundance testing.

Limitations

• Row count and column-level documentation are unknown, which limits suitability assessment.
• The dataset is described as a 'preliminary investigation' with an analytic sample of 68, which is a relatively small cohort.
• The primary data file is a 1.7 MB DOCX document, suggesting the underlying data tables may be embedded and require extraction.

Provenance

Source

Sara Santarossa, published on figshare.

Collection Method

Data collected from an ongoing birth cohort study using wearable activity monitors and 16S rRNA sequencing of stool samples.

Time Range

Covers the second and third trimesters of pregnancy for the participants.

Freshness

Last updated 2026-04-23 05:35:25.