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. 2008 Dec;2(4):253-61.
doi: 10.1007/s11764-008-0067-9. Epub 2008 Oct 16.

Dimensions of physical activity and their relationship to physical and emotional symptoms in breast cancer survivors

Karen Basen-Engquist  1 , Daniel Hughes, Heidi Perkins, Eileen Shinn, Cindy Carmack Taylor
Affiliations

Dimensions of physical activity and their relationship to physical and emotional symptoms in breast cancer survivors

Karen Basen-Engquist et al. J Cancer Surviv. 2008 Dec.

Abstract

Background: Many breast cancer survivors experience long term sequelae, including fatigue, decreased physical functioning, pain, and psychological distress. Physical activity can ameliorate these problems, but there is little research on how activity should be performed to be most beneficial. This study explores how dimensions of physical activity (total energy expenditure, frequency, and duration) are associated with symptoms among breast cancer survivors.

Methods: We conducted a secondary analysis of data on physical activity behavior and symptoms in a cross-sectional study (n = 148) of breast cancer survivors who were off treatment and had been diagnosed within the past 5 years.

Results: Multivariate analyses showed that total energy expenditure was associated with better general health (p = 0.006) and fewer depressive symptoms (p = 0.014), while frequency of activity was linearly related to physical functioning (p = 0.047), pain (0.057), general health (p < 0.001), and depressive symptoms (p < 0.001). Duration was related to physical functioning, pain, and general health, but the worst outcomes were reported by the participants with the shortest and longest duration of activity (quadratic trend p values = 0.002, 0.003, 0.008, respectively).

Discussion/conclusions: Greater total energy expenditure, higher physical activity frequency, and moderate duration were associated with better outcomes for most symptoms, although there was no relationship between any of the dimensions of physical activity and fatigue.

Implications for cancer survivors: The association of better outcomes with higher energy expenditure, higher frequency of activity, and moderate duration indicates that increasing activity through multiple short bouts may be the most beneficial for breast cancer survivors. However, randomized studies are needed to confirm this finding.

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Figures

Figure 1
Figure 1
Recruitment flow chart for survey of breast cancer survivors' physical activity of breast cancer survivors conducted in four settings. (*Participating percentages calculated with number of eligible women as the denominator. For the M. D. Anderson sample, the patients who missed their appointments during the recruiting period were not included in the denominator)
See this image and copyright information in PMC

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