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BACKGROUND	Inactivity and sedentary behavior are related to poorer health outcomes in breast cancer survivors .
BACKGROUND	However , few studies examining these behaviors in survivors have used objective measures , considered activities other than moderate-to-vigorous intensity activity ( MVPA ) and/or sedentary behavior ( i.e. low intensity activities ) or compared survivors to healthy controls .
BACKGROUND	The purpose of the present study is to compare accelerometer-measured activity of various intensities ( total , light , lifestyle , MVPA ) and sedentary behavior between breast cancer survivors and non-cancer controls .
METHODS	An imputation-based approach of independent sample t-tests adjusting for multiple comparisons was used to compare estimates of participation in each activity and sedentary behavior between survivors [ n = 398 ; M ( SD ) age = 56.95 ( 9.11 ) ] and block-matched non-cancer controls [ n = 1120 ; M ( SD ) age = 54.88 ( 16.11 ) ] .
METHODS	Potential moderating effects of body mass index ( BMI ) , age , and education were also examined .
RESULTS	Breast cancer survivors registered less daily total ( 282.8 v. 346.9 ) light ( 199.1 v. 259.3 ) and lifestyle ( 62.0 v. 71.7 ) activity minutes and more MVPA ( 21.6 v. 15.9 ) and sedentary behavior ( 555.7 v. 500.6 ) minutes than controls ( p < 0.001 for all ) .
RESULTS	These relationships were largely consistent across BMI , age and education .
RESULTS	On average , survivors spent an estimated 66.4 % of their waking time sedentary and 31.1 % in light/lifestyle activity and 2.6 % in MVPA .
CONCLUSIONS	Breast cancer survivors are more sedentary and participate in less low intensity activity than controls .
CONCLUSIONS	Although survivors registered more MVPA , these levels were insufficient .
CONCLUSIONS	Future research should explore these differences and potential benefits of targeting low intensity activities and reducing sedentary time in this population .

