Globally, breast cancer incidence rates have been constantly increasing the previous two decades, making breast cancer one of the leading causes of disability and cancer deaths in women. The results imply that the two measurement methods have limited agreement and cannot be used interchangeably.īreast cancer is a major and growing public health concern, affecting millions of women worldwide. The Spearman’s rank correlation coefficients showed that the differences between the methods increased as the average amount of time spent in PA and ST increased ( P < 0.01).
The logbook reported an average of 34 and 50% higher values than the SWA for MPA and VPA, as well as an average of 27% lower values for ST ( P < 0.05). The mean difference between the logbook and SWA with limits of agreement was 14 (☑02) minutes for MPA, 1 (☒1) minute for VPA and −196 (±408) minutes for ST, respectively. The level of agreement between the two measurement methods was then determined by performing Bland-Altman plots with limits of agreements, and calculating Spearman’s rank correlation coefficients. Daily time spent in MPA, VPA and ST was assessed by a study-specific logbook and the SenseWear Armband mini (SWA). Methodsīaseline data from 65 women with breast cancer scheduled to undergo adjuvant treatment was included.
The aim of the present study was to compare self-reports and objective measures for assessing daily time spent in moderate-intensity physical activity (MPA), vigorous-intensity physical activity (VPA) and ST in women undergoing breast cancer treatments.
To date few studies have compared self-reports and objective measurement in assessing PA and ST in women undergoing breast cancer treatments. PA and sedentary behaviors are complex multi-dimensional behaviors and are challenging to monitor accurately. Increasing physical activity (PA) and decreasing sedentary time (ST) have important health effects among breast cancer patients, a growing population group.
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