Weight lifting and physical function among survivors of breast cancer

A post hoc analysis of a randomized controlled trial

Justin C. Brown, Kathryn Schmitz

Research output: Contribution to journalArticle

21 Citations (Scopus)

Abstract

Purpose: Survivors of breast cancer may experience deterioration of physical function. This is important because poor physical function may be associated with premature mortality, injurious falls, bone fracture, and disability. We conducted a post hoc analysis to explore the potential efficacy of slowly progressive weight lifting to reduce the incidence of physical function deterioration among survivors of breast cancer. Methods: Between October 2005 and August 2008, we conducted a single-blind, 12-month, randomized controlled trial of twice-per-week slowly progressive weight lifting or standard care among 295 survivors of nonmetastatic breast cancer. In this post hoc analysis of data from the Physical Activity and Lymphedema Trial, we examined incident deterioration of physical function after 12 months, defined as a ≥ 10-point decrease in the physical function subscale of the Medical Outcomes Short-Form 36-item questionnaire. Results: The proportion of participants who experienced incident physical function deterioration after 12 months was 16.3% (24/147) in the control group and 8.1% (12/148) in the weight lifting group (relative risk, 0.49; 95% CI, 0.25 to 0.96; P = .04). No serious or unexpected adverse events occurred that were related to weight lifting. Conclusion: Slowly progressive weight lifting compared with standard care reduced the incidence of physical function deterioration among survivors of breast cancer. These data are hypothesis generating. Future studies should directly compare the efficacy of weight lifting with other modalities of exercise, such as brisk walking, to appropriately inform the development of a confirmatory study designed to preserve physical function among survivors of breast cancer.

Original languageEnglish (US)
Pages (from-to)2184-2189
Number of pages6
JournalJournal of Clinical Oncology
Volume33
Issue number19
DOIs
StatePublished - Jul 1 2015

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Weight Lifting
Survivors
Randomized Controlled Trials
Breast Neoplasms
Exercise
Premature Mortality
Lymphedema
Bone Fractures
Incidence
Walking
Control Groups

All Science Journal Classification (ASJC) codes

  • Oncology
  • Cancer Research

Cite this

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title = "Weight lifting and physical function among survivors of breast cancer: A post hoc analysis of a randomized controlled trial",
abstract = "Purpose: Survivors of breast cancer may experience deterioration of physical function. This is important because poor physical function may be associated with premature mortality, injurious falls, bone fracture, and disability. We conducted a post hoc analysis to explore the potential efficacy of slowly progressive weight lifting to reduce the incidence of physical function deterioration among survivors of breast cancer. Methods: Between October 2005 and August 2008, we conducted a single-blind, 12-month, randomized controlled trial of twice-per-week slowly progressive weight lifting or standard care among 295 survivors of nonmetastatic breast cancer. In this post hoc analysis of data from the Physical Activity and Lymphedema Trial, we examined incident deterioration of physical function after 12 months, defined as a ≥ 10-point decrease in the physical function subscale of the Medical Outcomes Short-Form 36-item questionnaire. Results: The proportion of participants who experienced incident physical function deterioration after 12 months was 16.3{\%} (24/147) in the control group and 8.1{\%} (12/148) in the weight lifting group (relative risk, 0.49; 95{\%} CI, 0.25 to 0.96; P = .04). No serious or unexpected adverse events occurred that were related to weight lifting. Conclusion: Slowly progressive weight lifting compared with standard care reduced the incidence of physical function deterioration among survivors of breast cancer. These data are hypothesis generating. Future studies should directly compare the efficacy of weight lifting with other modalities of exercise, such as brisk walking, to appropriately inform the development of a confirmatory study designed to preserve physical function among survivors of breast cancer.",
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Weight lifting and physical function among survivors of breast cancer : A post hoc analysis of a randomized controlled trial. / Brown, Justin C.; Schmitz, Kathryn.

In: Journal of Clinical Oncology, Vol. 33, No. 19, 01.07.2015, p. 2184-2189.

Research output: Contribution to journalArticle

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