Evidence map›Paper›PMID 41310098›Full record

ArticleJournal of cancer survivorship : research and practice2025

Predictive ability of the theory of planned behavior on physical activity in newly diagnosed women with breast cancer: a prospective cohort study.

Chad W Wagoner, Christine M Friedenreich, Kerry S Courneya, Qinggang Wang, Jeff K Vallance, Charles E Matthews, Lin Yang, Margaret L McNeely, Leanne Dickau, S Nicole Culos-Reed

Abstract read
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In one paragraph

Article in Journal of cancer survivorship : research and practice, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

0numbers the graph read from it
0cells of the map it votes in
1citing papers in PubMed
–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

1 citing paper in PubMed.

  1. Article
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

10 authors.

Chad W WagonerDepartment of Kinesiology, Recreation, and Sport Studies, University of Tennessee, 322 HPER Building, 1914 Andy Holt Avenue, Knoxville, TN, 37996, USA. cwagone2@utk.edu.
Christine M FriedenreichDepartment of Oncology, Cumming School of Medicine, University of Calgary, Calgary, Canada.
Kerry S CourneyaFaculty of Kinesiology, Sport, and Recreation, University of Alberta, Edmonton, Canada.
Qinggang WangDepartment of Cancer Epidemiology and Prevention Research, Cancer Care Alberta, Calgary, Canada.
Jeff K VallanceFaculty of Health Disciplines, Athabasca University, Athabasca, Canada.
Charles E MatthewsDivision of Cancer Epidemiology and Genetics, US National Cancer Institute, Bethesda, USA.
Lin YangDepartment of Oncology, Cumming School of Medicine, University of Calgary, Calgary, Canada.
Margaret L McNeelyFaculty of Rehabilitation Medicine, University of Alberta, Edmonton, Canada.
Leanne DickauDepartment of Cancer Epidemiology and Prevention Research, Cancer Care Alberta, Calgary, Canada.
S Nicole Culos-ReedDepartment of Oncology, Cumming School of Medicine, University of Calgary, Calgary, Canada.

Funding

Canadian Institutes of Health Research,Canada 155952CIHR 107534
6 · The paper itself

Abstract

purposeFew studies assess how well the Theory of Planned Behavior (TPB) predicts physical activity over time after a breast cancer diagnosis. This study evaluated TPB's prediction, measured at diagnosis, on women's physical activity 1 year later.

methodsThe Alberta Moving Beyond Breast Cancer (AMBER) study follows women recently diagnosed with breast cancer (n = 1528; average age 55.4). Participants completed questionnaires on TPB variables about recreational activity shortly after diagnosis. At 1 year, actiGraph GT3X+® devices measured light and moderate-vigorous activity, and self-reported activity over the past year was assessed with the Past Year Total Physical Activity Questionnaire. Structural equation models evaluated TPB variables' ability to predict physical activity after 1 year.

resultsAt diagnosis, positive attitudes (β = 0.51; p < 0.001) and greater perceived behavioral control (β = 0.16; p < 0.001) were associated with greater intentions for physical activity derived from device-measured (R

conclusionThe variance explained by the TPB for physical activity at 1 year after breast cancer diagnosis was minimal. These findings highlight the need to identify additional factors influencing intentions and long-term activity. IMPLICATIONS FOR CANCER SURVIVORS: Incorporating behavior change strategies that influence attitudes toward physical activity may positively impact intentions at diagnosis. To ensure long-term activity among breast cancer survivors, supportive care should include interventions addressing factors beyond initial intentions.

Indexed as

Breast cancerIntention-behavior gapPhysical activityStructural equation modelingTheory of Planned Behavior

Identifiers

PMID41310098

What Socratic holds

Textmetadata
Read underepoch 390

Registered trials

None linked

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 Socratic graph.