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Mark G. Davis, Kenneth R. Fox, Afroditi Stathi, Tanya Trayers, Janice L. Thompson and Ashley R. Cooper

The relationship of objectively measured sedentary time (ST), frequency of breaks in ST, and lower extremity function (LEF) was investigated in a diverse sample aged ≥ 70 years (n = 217). Physical activity (PA) was assessed by accelerometry deriving moderate-vigorous PA (MVPA) minutes per registered hour (MVPA min · hr−1), registered ST (ST min · hr−1), and breaks in ST min · hr−1 (breaks · hr−1). LEF was assessed by the Short Physical Performance Battery. Univariate associations with overall LEF were MVPA (r = .523), ST (r = −.499), and breaks (r = .389). Adjusted linear regression including MVPA min · hr−1, ST min · hr−1, and breaks · hr−1 explained 41.5% of LEF variance. Each additional break · hr−1 was associated with 0.58 point increase in LEF. Breaks and MVPA had strongest independent associations with LEF. Promoting regular breaks might be useful in maintaining or increasing LEF and later life independence. This novel finding is important for the design of effective lifestyle interventions targeting older adults.

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Tiago V. Barreira, Stephanie T. Broyles, Catrine Tudor-Locke, Jean-Philippe Chaput, Mikael Fogelholm, Gang Hu, Rebecca Kuriyan, Estelle V. Lambert, Carol A. Maher, José A. Maia, Timothy Olds, Vincent Onywera, Olga L. Sarmiento, Martyn Standage, Mark S. Tremblay, Peter T. Katzmarzyk and for the ISCOLE Research Group

(particularly MVPA) and sedentary time can be associated with household income, and this relationship may differ by a country’s level of human development. Some studies have documented associations between family SES and physical activity among children, 12 but the majority of those studies used questionnaire

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Heather McCracken and Shilpa Dogra

Sedentary time, that is, any activity conducted in a seated or reclined posture that requires low energy expenditure ( Sedentary Behaviour Research Network, 2012 ), is emerging as an important determinant of health among adults ( Owen et al., 2011 ) and older adults ( Dogra & Stathokostas, 2012

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Judith Godin, Joanna M. Blodgett, Kenneth Rockwood and Olga Theou

weight gain, whereas 30 min of brisk walking that replaced slow walking or TV watching was associated with weight loss ( Mekary, Willett, Hu, & Ding, 2009 ). Here, we examined sedentary time as the target behavior to be replaced because of the three activity levels we considered (i.e., sedentary, light

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Koji Yonemoto, Takanori Honda, Hiro Kishimoto, Daigo Yoshida, Jun Hata, Naoko Mukai, Mao Shibata, Yoichiro Hirakawa, Toshiharu Ninomiya and Shuzo Kumagai

Physical inactivity is an established risk factor for noncommunicable diseases and the fourth leading cause of death worldwide. 1 – 3 In recent years, a systematic review and meta-analysis showed that sedentary time is an independent risk factor for type 2 diabetes, cardiovascular disease, and

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Jennifer L. Copeland

. Since that time, large-scale epidemiological studies around the world have demonstrated a relationship between sedentary time, estimated in a variety of ways, and the risk of cardiometabolic disease and all-cause mortality ( Healy, Matthews, Dunstan, Winkler, & Owen, 2011 ; Katzmarzyk, Church, Craig

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Kasper Salin, Mikko Huhtiniemi, Anthony Watt, Harto Hakonen and Timo Jaakkola

Research has detailed that insufficient levels of physical activity (PA) and excessive levels of sedentary time (ST) have become a major concern in developed countries. 1 , 2 As a result of insufficient PA and excessive calorie intake, the obesity epidemic among children has become a crucial major

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Sara Knaeps, Stijn De Baere, Jan Bourgois, Evelien Mertens, Ruben Charlier and Johan Lefevre

The cardiometabolic health benefits of physical activity can no longer be denied, as the lack of physical activity is one of the most important predictors of mortality and burden of disease. 1 Lately, sedentary time has also been confirmed as a cardiometabolic health risk in itself, and meeting

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Vera Ramos, Eliana V. Carraça, Teresa Paiva and Fátima Baptista

, several studies show that better SQ is associated with higher levels of physical activity ( Baron, Reid, & Zee, 2013 ; Holfeld & Ruthig, 2014 ; Lambiase, Gabriel, Kuller, & Matthews, 2013 ), but the impact of sedentary time on the quality of sleep of older adults seems to be small or nonexistent

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Erika Rees-Punia, Alicia Holloway, David Knauft and Michael D. Schmidt

Over recent decades, childhood physical inactivity and sedentary time have become a main focus of public health efforts across the developed world. Physical activity interventions for children have been associated with a decrease in percentage of body fat, triglycerides, and systolic blood pressure