Sitting Time and Mortality from All Causes, Cardiovascular Disease, and Cancer

Katzmarzyk, Peter T.; Church, Timothy S.; Craig, Cora L.; Bouchard, Claude

doi:10.1249/mss.0b013e3181930355

Cited by 1,341 publications

(1,092 citation statements)

References 23 publications

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“…However, interventions need to be developed that target reductions in sedentary time to test whether diet also changes. ¹Longitudinal study but only baseline cross-sectional data used in this review; ²Intervention studies, analyses for control group only used for this review; 3 Studies from the larger Planet Health study; 4 Studies from the larger Project EAT study; 5 Studies from the larger HBSC study.…”

Section: Discussionmentioning

confidence: 99%

“…Excessive sitting time is essentially the main concern for sedentary behavior researchers. 1,2 Studies are now showing associations between sedentary behavior (usually assessed as screen-based behaviors such as TV and computer use), and a range of health outcomes, including all-cause mortality and cardiovascular disease, 3,4 adverse metabolic profile, 5 and obesity. 6 However, relationships are not always consistent across age, gender or health outcomes.…”

Section: Contextmentioning

confidence: 99%

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Sedentary Behavior and Dietary Intake in Children, Adolescents, and Adults

Pearson

Biddle

2011

American Journal of Preventive Medicine

492

385

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Context: Sedentary behavior is implicated in youth and adult overweight and obesity. However, the relationship between sedentary behavior and weight status is often small or inconsistent with few studies controlling for confounding factors such as diet and physical activity. Diet has been hypothesized to co-vary with some sedentary behaviors. It is opportune, therefore, to review whether dietary intake is associated with sedentary behavior in young people and adults. This may allow for better interpretation of the diversity of findings concerning sedentary behavior and weight status.Evidence acquisition: Published English language studies were located from computerized and manual searches in early 2010. Included studies were observational studies assessing an association between at least one sedentary behavior and at least one aspect of dietary intake in children (<11 years), and/or adolescents (12-18 years), and/or adults (>18 years).Evidence synthesis: 53 studies (k), totaling 111 independent samples were eligible for this review. Sedentary behavior in children (k=19; independent samples=24), adolescents (k=26; independent samples=72), and adults (k=11; independent samples=14) appears to be clearly associated with elements of a less healthy diet including lower fruit and vegetable consumption, higher consumption of energy-dense snacks, drinks and fast foods, and higher total energy intake. Strength of associations were mainly in the range of small-to-moderate. Conclusions:The association drawn mainly from cross-sectional studies is that sedentary behavior, usually assessed as screen time and predominantly TV viewing, is associated with unhealthy dietary behaviors in children, adolescents and adults. Interventions need to be developed that target reductions in sedentary time to test whether diet also changes. ContextSedentary behavior is rapidly emerging as an important issue in public health. Researchers are now investigating the role of sedentary behavior in diverse health outcomes. Typically, researchers have defined 'sedentary' as not meeting a criterion level of physical activity.However, by sedentary behavior we are referring to very low levels of energy expenditure through sitting and lying. Excessive sitting time is essentially the main concern for sedentary behavior researchers. 1,2 Studies are now showing associations between sedentary behavior (usually assessed as screen-based behaviors such as TV and computer use), and a range of health outcomes, including all-cause mortality and cardiovascular disease, 3, 4 adverse metabolic profile, 5 and obesity. 6 However, relationships are not always consistent across age, gender or health outcomes. For example, while there has been a longstanding assumption that TV viewing in youth is associated with overweight and obesity, 7 a meta-analysis of mainly cross-sectional studies found that the strength of such an association was actually very small. 8 Moreover, a review of sedentary behavior intervention studies showed inconsistent weight loss for young people. 9 ...

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Section: Discussionmentioning

confidence: 99%

Section: Contextmentioning

confidence: 99%

Sedentary Behavior and Dietary Intake in Children, Adolescents, and Adults

Pearson

Biddle

2011

American Journal of Preventive Medicine

492

385

View full text Add to dashboard Cite

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“…Compared with the non-CKD subgroup, those with CKD are more sedentary (4,6,7). Sedentary activities with low energy expenditure (approximately 1.0-1.3 metabolic equivalents [METs]) have emerged as an important risk factor for obesity (8), insulin resistance (9), diabetes (10), and increased mortality (11)(12)(13) in the general population. The term exercise is typically applied to moderate (3-6 METs of energy expenditure) or vigorous (.6 METs) physical activities (14).…”

Section: Introductionmentioning

confidence: 99%

Light-Intensity Physical Activities and Mortality in the United States General Population and CKD Subpopulation

Beddhu

Wei

Marcus

et al. 2015

Clinical Journal of the American Society of Nephrology

114

106

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Background and objectives Sedentary behavior is associated with increased mortality in the general population. Whether replacing sedentary behavior with low-or light-intensity activities confers a survival benefit in the general or CKD populations is unknown.Design, setting, participants, & measurements This observational analysis of the 2003-2004 National Health and Nutrition Examination Survey examined the associations of low-and light-intensity activities with mortality. On the basis of the number of counts/min recorded by an accelerometer, durations of sedentary (,100/min), low (100-499/min), light (500-2019/min), and moderate/vigorous ($2020/min) activity were defined and normalized to 60 minutes. The mortality associations of 2 min/hr less sedentary duration in conjunction with 2 min/ hr more (tradeoff) spent in one of the low, light, or moderate/vigorous activity durations while controlling for the other two activity durations were examined in multivariable Cox regression models in the entire cohort and in the CKD subgroup.Results Of the 3626 participants included, 383 had CKD. The mean sedentary duration was 34.467.9 min/hr in the entire cohort and 40.866.8 in the CKD subgroup. Tradeoff of sedentary duration with low activity duration was not associated with mortality in the entire cohort or the CKD subgroup. Tradeoff of sedentary duration with light activity duration was associated with a lower hazard of death in the entire cohort (hazard ratio, 0.67; 95% confidence interval, 0.48 to 0.93) and CKD subgroup (hazard ratio, 0.59; 95% confidence interval, 0.35 to 0.98). Tradeoff of sedentary duration with moderate/vigorous activity duration had a nonsignificant lower hazard in the entire cohort and CKD subgroup.Conclusions Patients with CKD are sedentary nearly two thirds of the time. Interventions that replace sedentary duration with an increase in light activity duration might confer a survival benefit.

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“…Study results have demonstrated associations of prolonged sitting time with premature mortality (1–3); chronic diseases such as cardiovascular disease, diabetes, and cancer (4–7); metabolic syndrome (5,6); and obesity (5,7). In contrast, breaks in prolonged sitting time have been correlated with beneficial metabolic profiles among adults, suggesting that frequent breaks in sedentary activity may explain lower health risk related to waist circumference, body mass index (BMI), triglyceride levels, and 2-hour plasma glucose levels (8).…”

Section: Introductionmentioning

confidence: 99%

Reducing Occupational Sitting Time and Improving Worker Health: The Take-a-Stand Project, 2011

Pronk¹,

Katz²,

Lowry³

et al. 2012

Prev. Chronic Dis.

266

221

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BackgroundProlonged sitting time is a health risk. We describe a practice-based study designed to reduce prolonged sitting time and improve selected health factors among workers with sedentary jobs.Community ContextWe conducted our study during March–May 2011 in Minneapolis, Minnesota, among employees with sedentary jobs.MethodsProject implementation occurred over 7 weeks with a baseline period of 1 week (period 1), an intervention period of 4 weeks (period 2), and a postintervention period of 2 weeks (period 3). The intervention group (n = 24) received a sit-stand device during period 2 designed to fit their workstation, and the comparison group (n = 10) did not. We used experience-sampling methods to monitor sitting behavior at work during the 7 weeks of the project. We estimated change scores in sitting time, health risk factors, mood states, and several office behaviors on the basis of survey responses.OutcomeThe Take-a-Stand Project reduced time spent sitting by 224% (66 minutes per day), reduced upper back and neck pain by 54%, and improved mood states. Furthermore, the removal of the device largely negated all observed improvements within 2 weeks.InterpretationOur findings suggest that using a sit-stand device at work can reduce sitting time and generate other health benefits for workers.

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Sitting Time and Mortality from All Causes, Cardiovascular Disease, and Cancer

Cited by 1,341 publications

References 23 publications

Sedentary Behavior and Dietary Intake in Children, Adolescents, and Adults

Sedentary Behavior and Dietary Intake in Children, Adolescents, and Adults

Light-Intensity Physical Activities and Mortality in the United States General Population and CKD Subpopulation

Reducing Occupational Sitting Time and Improving Worker Health: The Take-a-Stand Project, 2011

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