Cited by 188Cancer-related cognitive impairment studiesCancer survivorship and careIntensive Care Unit Cognitive Disorders

Randomized controlled trial of increasing physical activity on objectively measured and self‐reported cognitive functioning among breast cancer survivors: The memory & motion study

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Hartman, Sheri J., Nelson, Sandahl H., Myers, Emily, Natarajan, Loki, Sears, Dorothy D., Palmer, Barton W., Weiner, Lauren S., Parker, Barbara A. +1 more·2018·Cancer

Abstract

BACKGROUND: Increasing physical activity can improve cognition in healthy and cognitively impaired adults; however, the benefits for cancer survivors are unknown. The current study examined a 12‐week physical activity intervention, compared with a control condition, on objective and self‐reported cognition among breast cancer survivors. METHODS: Sedentary breast cancer survivors were randomized to an exercise arm (n = 43) or a control arm (n = 44). At baseline and at 12 weeks, objective cognition was measured with the National Institutes of Health Cognitive Toolbox, and self‐reported cognition using the Patient‐Reported Outcomes Measurement Information System scales. Linear mixed‐effects regression models tested intervention effects for changes in cognition scores. RESULTS: On average, participants (n = 87) were aged 57 years (standard deviation, 10.4 years) and were 2.5 years (standard deviation, 1.3 years) post surgery. Scores on the Oral Symbol Digit subscale (a measure of processing speed) evidenced differential improvement in the exercise arm versus the control arm (b = 2.01; P < .05). The between‐group differences in improvement on self‐reported cognition were not statistically significant but were suggestive of potential group differences. Time since surgery moderated the correlation, and participants who were ≤2 years post surgery had a significantly greater improvement in Oral Symbol Digit score (exercise vs control (b = 4.00; P < .01), but no significant improvement was observed in patients who were >2 years postsurgery (b = −1.19; P = .40). A significant dose response was observed with greater increased physical activity associated with objective and self‐reported cognition in the exercise arm. CONCLUSIONS: The exercise intervention significantly improved processing speed, but only among those who had been diagnosed with breast cancer within the past 2 years. Slowed processing speed can have substantial implications for independent functioning, supporting the potential importance of early implementation of an exercise intervention among patients with breast cancer. Cancer 2018;124:192‐202 . © 2017 American Cancer Society .

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Authors
Hartman, S. J., Nelson, S. H., Myers, E., Natarajan, L., Sears, D. D., Palmer, B. W., Weiner, L. S., Parker, B. A., & Patterson, R. E.
Affiliations
University of California San Diego (US)
Corresponding author
Hartman, Sheri J.
Venue
Cancer
Publisher
Wiley
Published
2017-09-19
Volume
124
Issue
1
Pages
192-202
ISSN
  • 0008-543X (ISSN-L)
  • 1097-0142
OpenAlex
W2756172936
Cited by
188
References
76
Citations by year
2026: 17 · 2025: 23 · 2024: 24 · 2023: 25 · 2022: 24 · 2021: 25 · 2020: 18 · 2019: 20 · 2018: 10 · 2017: 1 · 2016: 1
FWCI
11.08
Type
journal article
Language
en
Open access
Locations
  • Cancer (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
  • eScholarship (California Digital Library) (submittedVersion)
Funders
NIH (K07CA181323)
Topics
  • Health Sciences › Medicine › Pulmonary and Respiratory Medicine › Cancer-related cognitive impairment studies
  • Health Sciences › Medicine › Oncology › Cancer survivorship and care
  • Health Sciences › Medicine › Critical Care and Intensive Care Medicine › Intensive Care Unit Cognitive Disorders
Keywords
breast cancer survivors, physical activity interventions, physical activity, cognitive function, processing speed, memory, sedentary behavior, time since surgery, dose-response relationship, objective cognition, self-reported cognition, NIH Toolbox, PROMIS
MeSH terms
Cancer Survivors, Aged, Breast Neoplasms, Cognition, Exercise Therapy, Female, Humans, Memory, Middle Aged, Neuropsychological Tests, Exercise, Sedentary Behavior, Self Report, Cognitive Dysfunction

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