Conclusions : The available literature suggests that African American breast cancer survivors adhere to interventions of various modalities and are capable of making modest to significant changes .
Background : African American breast cancer survivors have a higher incidence of estrogen receptor negative and basal-like ( e.g. , triple negative ) tumors , placing them at greater risk for poorer survival when compared to women of other racial and ethnic groups .
While access to equitable care , late disease stage at diagnosis , tumor biology , and sociodemographic characteristics contribute to health disparities , poor lifestyle characteristics ( i.e. , inactivity , obesity , and poor diet ) contribute equally to these disparities .
Lifestyle interventions hold promise in shielding African American survivors from second cancers , comorbidities , and premature mortality , but they are often underrepresented in studies promoting positive behaviors .
This review examined the available literature to document health behaviors and lifestyle intervention ( i.e. , obesity , physical activity , and sedentary behavior ) studies in African American breast cancer survivors .
Objective Assessment of Physical Activity: Classifiers for Public Health.
PURPOSE Walking for health is recommended by health agencies , partly based on epidemiological studies of self-reported behaviors . Accelerometers are now replacing survey data , but it is not clear that intensity-based cut points reflect the behaviors previously reported . New computational techniques can help classify raw accelerometer data into behaviors meaningful for public health . METHODS Five hundred twenty days of triaxial 30-Hz accelerometer data from three studies ( n = 78 ) were employed as training data . Study 1 included prescribed activities completed in natural setting s. The other two studies included multiple days of free-living data  with SenseCam-annotated ground truth . The two population s in the free-living data sets were demographically and physical different . R and om forest classifiers were trained on each data set , and the classification accuracy on the training data set and that applied to the other available data sets were assessed . Accelerometer cut points were also compared with the ground truth from the three data sets . RESULTS The r and om forest classified all behaviors with over 80 % accuracy . Classifiers developed on the prescribed data performed with higher accuracy than the free-living data classifier , but these did not perform as well on the free-living data sets . Many of the observed behaviors occurred at different intensities compared with those identified by existing cut points . CONCLUSIONS New machine learning classifiers developed from prescribed activities ( study 1 ) were considerably less accurate when applied to free-living population s or to a functionally different population ( studies 2 and 3 ) . These classifiers , developed on free-living data , may have value when applied to large cohort studies with existing hip accelerometer data
Conclusions : The available literature suggests that African American breast cancer survivors adhere to interventions of various modalities and are capable of making modest to significant changes .
Background : African American breast cancer survivors have a higher incidence of estrogen receptor negative and basal-like ( e.g. , triple negative ) tumors , placing them at greater risk for poorer survival when compared to women of other racial and ethnic groups .
While access to equitable care , late disease stage at diagnosis , tumor biology , and sociodemographic characteristics contribute to health disparities , poor lifestyle characteristics ( i.e. , inactivity , obesity , and poor diet ) contribute equally to these disparities .
Lifestyle interventions hold promise in shielding African American survivors from second cancers , comorbidities , and premature mortality , but they are often underrepresented in studies promoting positive behaviors .
This review examined the available literature to document health behaviors and lifestyle intervention ( i.e. , obesity , physical activity , and sedentary behavior ) studies in African American breast cancer survivors .