The Relationship Between Maternal Physical Activity during Late Pregnancy and Infant Motor Development
Notice bibliographique
Résumé
BACKGROUND: Physical activity is beneficial for pregnant women and their offspring. Exercise during pregnancy may elicit improvements in the brain/neurodevelopment of offspring; however, it is unknown whether or not physical activity during pregnancy is connected to infant motor development. The purpose of this study was to determine the relationship between maternal physical activity during late pregnancy and infant motor development at four months of age. METHODS: Physical activity was objectively assessed during late pregnancy (32-39 weeks gestation) via a wrist worn accelerometer. The amount of time spent sedentary and participating in light and moderate exercises were calculated for one week. Within 48 hours of birth, surveys were given to participants to complete prospectively with information on time their infant spends in different positions (supine, prone, supported sitting and standing), infant feeding practices (breastfed vs. formula-fed), and other factors that could contribute to infant motor development during the first 4 months of life. Between 4 and 4.5 months of age, the motor development of the child was assessed by a board-certified pediatric physical therapist using the well-validated Alberta Infant Motor Scale (AIMS). RESULTS: Thirty women-infant pairs participated in the study (n=30). Infant motor development percentiles were not correlated to time spent sedentary (r=-.02, p=.94), time spent participating in light activity (r=-.03, p=.88), or time spent participating in moderate activity during late pregnancy (r=.04, p=.85). In addition, there was not a significant relationship between infant motor scores and the total time an infant spent in prone (“tummy time”) (r=.06, p=.81). Interestingly, infants who were exclusively breastfed at 4 months had a significantly higher mean motor score percentiles compared to those who were on formula (19.0 vs. 15.8, p=0.003). CONCLUSIONS: There was no relationship between maternal physical activity levels during late pregnancy and infant motor development at four months of age. However, infants who were still breastfed at 4 months of age had higher motor development percentiles. The long-term implications of these data are substantial as motor performance in infancy is linked to an improved-cognitive function in school-age children.
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Comment cette classification a été obtenuedéplier
Prédiction machine sur la base complète
Imitation des enseignantsNi prévalence calibrée, ni vérité terrain. Validation humaine à venir. Le volet Gemma est une étiquette directe du modèle pour chaque travail de la base, lue sur la notice réduite au titre. Le volet Codex est un classifieur appris des 10 348 étiquettes directes de Codex et calibré sur les taux pondérés de l'échantillon; les champs sans appui suffisant ne portent aucun appel Codex. Le mode candidate est l'union des deux volets; le consensus est leur intersection. Ces sorties portent le statut machine_predicted_unvalidated et ne sont pas des étiquettes humaines.
Scores du classifieur distillé par catégorie (deux têtes)
| Catégorie | Codex | Gemma |
|---|---|---|
| Métarecherche | 0,000 | 0,003 |
| Méta-épidémiologie (sens strict) | 0,000 | 0,000 |
| Méta-épidémiologie (sens large) | 0,000 | 0,000 |
| Bibliométrie | 0,000 | 0,000 |
| Études des sciences et des technologies | 0,000 | 0,000 |
| Communication savante | 0,000 | 0,000 |
| Science ouverte | 0,000 | 0,000 |
| Intégrité de la recherche | 0,000 | 0,000 |
| Charge utile insuffisante (le modèle a refusé de juger) | 0,001 | 0,000 |
Scores machine (provisoires)
Les deux têtes enseignantes du modèle étudiant, lues sur ce travail. Un score ordonne la base pour la relecture; il n'affirme jamais une catégorie, et le statut de validation accompagne chaque rangée tel quel.
Scores de référence d'un modèle non mature (critères de maturité non atteints, 7 itérations). Un score ordonne; il n'affirme jamais une catégorie.
score_only:v0-immature-baseline · tel quel depuis la passe de notation : score_only signifie que le nombre peut ordonner les travaux, et qu'aucune étiquette de catégorie n'en découleClassification
machine, non validéePrédiction automatique; un appel candidat d’une seule source (Gemma direct ou Codex distillé), pas un consensus.
Le détail, modèle par modèle et score par score, se trouve en fin de page sous « Comment cette classification a été obtenue ».