Impact Of Postpartum Exercise On Maternal Health And Infant Physical Activity And Sleep Behaviours
Bibliographic record
Abstract
Physical activity (PA) has many implications for health, including effects on weight loss, body mass index (BMI), and sleep behaviours. The literature has established a relationship between mother-child physical activity, however, the impact of this interaction is unknown during the postpartum period. PURPOSE: To determine if a structured postpartum resistance training intervention with strollers and babies (60 minutes/session, twice/week for 10 weeks) improves maternal health outcomes and if infant physical activity (IPA) levels and infant sleep behaviours (ISB) are impacted. METHODS: Forty-six women voluntarily enrolled in the Active Mom, Active Baby Intervention. Measures were taken at baseline (t1), 5-weeks (t2; mid-intervention), and 10-weeks (t3; post-intervention). At each time point, maternal weight (kg) was used to calculate BMI (kg/m2), and maternal physical activity (MPA) levels were measured using the self-reported International Physical Activity Questionnaire-long form (IPAQ-L). Infants were assessed using the Rothbart Infant Behaviour Questionnaire-Revised (IBQ-R) for PA and sleep behaviours. A nonparametric test was conducted to determine if there was a significant change in maternal weight, BMI, and PA levels (light, moderate, and vigorous) across the intervention. Comparisons in IPA and ISB were made using a one-way ANOVA with repeated-measures. A post hoc comparison was completed using the Bonferroni test through the three time points. RESULTS: Maternal age of participants (n=46) was 32.0±3.5 years at 16.6±7.5 weeks postpartum. The results showed a significant (p<0.001) decrease in maternal weight (-1.4±0.04kg) and BMI (-0.5±0.005kg/m2) across the intervention. There was no significant difference in light- or moderate- PA in the mother, however, vigorous-intensity PA increased from t1 (214.2±331.3MET-mins/week) to t2 (837.3±516.7MET-mins/week; p<0.001) and was maintained until t3 (736.0±582.6MET-mins/week; p>0.001). There was a significant increase in scores for IPA from t1 (3.89±0.85) to t2 (4.47±0.83; p<0.001) to t3 (4.80±0.93; p<0.001). No change in infant sleep behaviour was found between time points. CONCLUSION: A postpartum exercise intervention with babies can increase physical activity in both mother and infant, resulting in maternal weight loss.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.001 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.001 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".