Evidence map›Paper›PMID 21278835›Full record

ArticlePsychology of sport and exercise2011

Towards an Understanding of Change in Physical Activity from Pregnancy Through Postpartum.

Kelly R Evenson

Abstract read
In one paragraph

Article in Psychology of sport and exercise, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
18citing papers in PubMed, 1 pooled it
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

18 citing papers in PubMed, 1 synthesis or guideline pooled it.

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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

1 author.

Kelly R EvensonDepartment of Epidemiology, Gillings School of Global Public Health, University of North Carolina - Chapel Hill, 137 East Franklin Street, Suite 306, Bank of America Center, Chapel Hill, NC 27514.

Funding

Zonisamide in Patients with Neuropathic Pain Associated with Diabetic NeuropathyM01RR000046 · NCRR · UNIV OF NORTH CAROLINA CHAPEL HILL · PI MUENZER, JOSEPH J. · 1985 to 2008
$38.5M
EPIDEMIOLOGY OF EXERTION, STRESS, AND PRETERM DELIVERYR01HD037584 · NICHD · UNIVERSITY OF NORTH CAROLINA CHAPEL HILL · PI SAVITZ, DAVID A · 2000 to 2004
$3.1M
Pregnancy Related Weight Gain: A Link to ObesityR01DK061981 · NIDDK · UNIV OF NORTH CAROLINA CHAPEL HILL · PI SIEGA-RIZ, ANNA MARIA · 2002 to 2006
$2.2M
Understanding Change in Physical Activity PostpartumR01CA109804 · NCI · UNIV OF NORTH CAROLINA CHAPEL HILL · PI EVENSON, KELLY R. · 2004 to 2009
$1.4M
NCI NIH HHS R01 CA109804NCRR NIH HHS M01 RR000046NICHD NIH HHS R01 HD037584NIDDK NIH HHS R01 DK061981
6 · The paper itself

Abstract

objectiveThe purpose of this paper was to describe the rationale, data collection, and proposed analyses for examination of mediators of change in physical activity from pregnancy to postpartum among a cohort of pregnant women.

methodThe Pregnancy Infection and Nutrition 3 (PIN3) Study enrolled 2006 pregnant women into the cohort from 2001 to 2005. All women lived in central North Carolina upon enrollment. Physical activity was assessed using a self-reported one week recall, measured twice during pregnancy and once each at 3- and 12-months postpartum. On a subset of women, one-week accelerometer measures were also collected during the two postpartum time periods. Potential mediators (intrapersonal, interpersonal, community) were collected during pregnancy and postpartum through interviews and take home questionnaires.

resultsTo assess mediation of physical activity among our cohort, we will first describe change in physical activity and the mediators, as well as their associations, through pregnancy into the postpartum period. Following this, the product of coefficients approach will be applied to examine whether each measure had indirect effects on change in physical activity. Each individual level mediator will be examined one at a time and across the time points in which it was available. The Sobel standard error approximation formula will be used to test for significance of the mediation effect.

conclusionsThis study will provide evidence to develop appropriate interventions targeted at physical activity and will help focus efforts on the appropriate time periods between pregnancy and postpartum.

Identifiers

PMID21278835
PMCPMC3026572

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.