Abstract
SEDENTARY BEHAVIOR, LIGHT-INTENSITY PHYSICAL ACTIVITY, STEPS, AND ADVERSE PRENGNACY OUTCOMES: THE PREGNANCY 24/7 COHORT STUDY: 858
Medicine and science in sports and exercise, Vol.58(10S), 858
10/2026
DOI: 10.1249/01.mss.0001261320.64361.80
Abstract
Moderate-to-vigorous intensity physical activity (MVPA) decreases the risk of adverse pregnancy outcomes (APOs), yet associations with sedentary behavior (SB), light-intensity physical activity (LPA), and steps are uncertain.
PURPOSE: Determine associations between trajectories of SB, LPA, and steps across pregnancy with incidence of APOs METHODS: The Pregnancy 24/7 multisite pregnancy cohort (n=500) assessed SB, LPA, and steps by thigh-worn activPAL each trimester. APOs (hypertensive disorders of pregnancy, preterm birth, gestational diabetes, and small-for-gestational age) were abstracted from medical records and adjudicated by an obstetrician. Group-based trajectories of SB (total and accumulated in bouts of ≥60 min [SB60]), LPA (total and separated into standing/non-standing), and steps/day were constructed. Logistic regression evaluated associations between trajectories and APOs, adjusted for age, parity, and socioeconomic status (SES). Sensitivity analyses further adjusted for pre-pregnancy body mass index (BMI) and MVPA.
RESULTS: Participants with available device and outcome data (n=471) had mean age 30.6 ± 4.5 years, 38% were high SES, 44 - 53% had ≥150 min/week of MVPA across trimesters, and mean pre-pregnancy BMI was 27.4 ± 6.6 kg/m2. APOs occurred in 175 (37%) participants. Mean durations/steps in each trajectory as well as adjusted odds of APO by trajectories are presented in the Table. Those in the highest vs. lowest SB and SB60 trajectories had nearly three times the odds of APO, while those in the highest vs. lowest trajectory of LPA and steps had less than half the odds of APO (all linear p-for-trends<0.05). Standing and non-standing LPA trajectories were not associated with APOs. Adjustment for MVPA and pre-pregnancy BMI did not change findings.
CONCLUSION: Lower SB, higher LPA, and greater steps during pregnancy protected against APOs and should be tested as novel intervention targets to improve pregnancy health.
Details
- Title: Subtitle
- SEDENTARY BEHAVIOR, LIGHT-INTENSITY PHYSICAL ACTIVITY, STEPS, AND ADVERSE PRENGNACY OUTCOMES: THE PREGNANCY 24/7 COHORT STUDY: 858
- Creators
- Bethany B. Barone Gibbs - West Virginia UniversityJaemyung Kim - University of IowaJacob Gallagher - Iowa State UniversityMelissa A. Jones - Oakland UniversityAlex H. Crisp - University of IowaKatrina Wilhite - West Virginia UniversityKarina Smith - University of IowaSabera Rahman - University of PittsburghAlexis Thrower - West Virginia UniversityJanet Catov - University of PittsburghChristopher Kline - University of PittsburghMaisa Feghali - University of PittsburghDonna Santillan - University of IowaMark Santillan - University of IowaIqra Sheikh - West Virginia UniversityBridget Zimmerman - University of Iowa, BiostatisticsKara M. Whitaker - University of Iowa
- Resource Type
- Abstract
- Publication Details
- Medicine and science in sports and exercise, Vol.58(10S), 858
- DOI
- 10.1249/01.mss.0001261320.64361.80
- ISSN
- 0195-9131
- eISSN
- 1530-0315
- Publisher
- Lippincott Williams & Wilkins
- Grant note
- NHLBI: R01HL153095
Supported by: This research was supported by NHLBI (R01HL153095)
- Language
- English
- Date published
- 10/2026
- Academic Unit
- Epidemiology; Biostatistics; Obstetrics and Gynecology; Health, Sport, and Human Physiology
- Record Identifier
- 9985230784102771
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