Replacing Sedentary Time With Light or Moderate–Vigorous Physical Activity Across Levels of Frailty

2020 ◽  
Vol 28 (1) ◽  
pp. 18-23 ◽  
Author(s):  
Judith Godin ◽  
Joanna M. Blodgett ◽  
Kenneth Rockwood ◽  
Olga Theou
Keyword(s):  
Physical Activity ◽  
Sedentary Behavior ◽  
Mortality Risk ◽  
Sedentary Time ◽  
Vigorous Physical Activity ◽  
Frailty Index ◽  
Lower Mortality ◽  
Vigorous Exercise ◽  
Light Activity ◽  
Lower Mortality Risk

The authors sought to examine how much sedentary time needs to be replaced by light or moderate–vigorous physical activity in order to reduce frailty and protect against mortality. The authors built isotemporal substitution models to assess the theoretical effect of replacing sedentary behavior with an equal amount of light or moderate–vigorous activity on frailty and mortality in community-based adults aged 50 years and older. Controlling for age, sex, body mass index, marital status, race, education, employment status, and National Health and Nutrition Examination Study cycle, replacing 1 hr of sedentary time with moderate–vigorous or light physical activity daily was associated with a lower frailty index. For mortality, results varied based on frailty level. Replacing sedentary behavior with moderate–vigorous exercise was associated with lower mortality risk in vulnerable individuals; however, replacing sedentary behavior with light activity was associated with lower mortality risk in frailer individuals.

scholarly journals 221Association of physical activity bout length and changing intensity with mortality in UK Biobank

2021 ◽  
Vol 50 (Supplement_1) ◽  
Author(s):  
Louise Millard ◽  
Kate Tilling ◽  
Tom Gaunt ◽  
David Carslake ◽  
Deborah Lawlor
Keyword(s):  
Physical Activity ◽  
Mortality Risk ◽  
Vigorous Physical Activity ◽  
Lower Mortality ◽  
Uk Biobank ◽  
Bout Length ◽  
All Cause Mortality ◽  
Light Activity ◽  
Activity Bout ◽  
Lower Mortality Risk

Abstract Background Spending more time active (and less time sedentary) is associated with many health benefits but it is unclear whether these associations differ depending on whether time spent sedentary or in moderate-vigorous physical activity (MVPA) is accumulated in long or short bouts. We used a novel analytical approach to examine whether length of sedentary and MVPA bouts associates with all-cause mortality. Methods We used data on 79,507 participants from UK Biobank. We derived the total time participants spent in activity categories (sleep, sedentary, light activity and MVPA) and in sedentary and MVPA bouts of short (1-15 minutes), medium (16-40 minutes) and long (41+ minutes) duration, on average per day. We used Cox proportion hazards regression to estimate the association of spending 10 minutes more average daily time in one activity or bout length category, coupled with spending 10 minutes less time in another, with all-cause mortality. Results Those spending more time in MVPA had lower mortality risk, irrespective of whether this replaced time spent sleeping, sedentary or in light activity. We found little evidence to suggest that mortality risk differed depending on the length of sedentary or MVPA bouts. Conclusions We uniquely show that higher total MVPA improves health irrespective of whether it is obtained from several short bouts or fewer longer bouts, supporting recent policy changes in some countries. Key messages Our results suggest that time spent in MVPA associates with lower mortality risk irrespective of whether it is obtained from several short bouts or fewer longer bouts.

scholarly journals Meeting Canadian 24-Hour Movement Guideline recommendations and risk of all-cause mortality

2021 ◽  
Author(s):  
Anna E Clarke ◽  
Valerie Carson ◽  
Jean-Philippe Chaput ◽  
Rachel C Colley ◽  
Karen C Roberts ◽  
...  
Keyword(s):  
Physical Activity ◽  
Sedentary Behavior ◽  
Sedentary Behaviour ◽  
Mortality Risk ◽  
Sedentary Time ◽  
Vigorous Physical Activity ◽  
Nutrition Examination Survey ◽  
Health And Nutrition ◽  
All Cause Mortality ◽  
New Guidelines

This study determined if meeting the Canadian 24-Hour Movement Guidelines recommendations are associated with all-cause mortality. Participants were 3,471 adults from the 2005-2006 U.S. National Health and Nutrition Examination Survey followed for mortality over 11 years. They were classified as meeting or not meeting recommendations for sleep duration, sedentary behaviour, and moderate-to-vigorous physical activity (MVPA). A total of 63.8%, 35.3%, and 41.5% of participants met recommendations for sleep, sedentary behavior, and physical activity while 12.3% met all three recommendations. The hazard ratio (HR) for all-cause mortality in participants meeting the recommendations relative to those not meeting the recommendations were 0.91 (0.72, 1.16) for sleep, 0.92 (0.61, 1.40) for sedentary behavior, and 0.42 (0.24, 0.74) for MVPA. The HR for meeting none, any one, any two, and all three recommendations were 1.00, 0.86 (0.65, 1.14), 0.49 (0.28, 0.86), and 0.72 (0.34, 1.50). When the cut-point used to denote acceptable sedentary time was changed from ≤8 to ≤10 hours/day, the HR for meeting none, any one, any two, and all three recommendations were 1.00, 0.83 (0.59, 1.15), 0.57 (0.34, 0.96), and 0.43 (0.20, 0.93). These findings provide some support for the ability of the 24-hour movement guidelines to predict mortality risk. NOVELTY - The 24-Hour Movement Guidelines provide recommendations for sleep, sedentary behavior, and physical activity. - The findings of this study provide some support of the ability of these new guidelines to predict mortality risk.

scholarly journals Association of physical activity intensity and bout length with mortality: An observational study of 79,503 UK Biobank participants

PLoS Medicine ◽  
2021 ◽  
Vol 18 (9) ◽  
pp. e1003757
Author(s):  
Lousise A. C. Millard ◽  
Kate Tilling ◽  
Tom R. Gaunt ◽  
David Carslake ◽  
Deborah A. Lawlor
Keyword(s):  
Physical Activity ◽  
Mortality Risk ◽  
Sedentary Time ◽  
The United States ◽  
Lower Mortality ◽  
Uk Biobank ◽  
Bout Length ◽  
All Cause Mortality ◽  
Light Activity

Background Spending more time active (and less sedentary) is associated with health benefits such as improved cardiovascular health and lower risk of all-cause mortality. It is unclear whether these associations differ depending on whether time spent sedentary or in moderate-vigorous physical activity (MVPA) is accumulated in long or short bouts. In this study, we used a novel method that accounts for substitution (i.e., more time in MVPA means less time sleeping, in light activity or sedentary) to examine whether length of sedentary and MVPA bouts associates with all-cause mortality. Methods and findings We used data on 79,503 adult participants from the population-based UK Biobank cohort, which recruited participants between 2006 and 2010 (mean age at accelerometer wear 62.1 years [SD = 7.9], 54.5% women; mean length of follow-up 5.1 years [SD = 0.73]). We derived (1) the total time participants spent in activity categories—sleep, sedentary, light activity, and MVPA—on average per day; (2) time spent in sedentary bouts of short (1 to 15 minutes), medium (16 to 40 minutes), and long (41+ minutes) duration; and (3) MVPA bouts of very short (1 to 9 minutes), short (10 to 15 minutes), medium (16 to 40 minutes), and long (41+ minutes) duration. We used Cox proportion hazards regression to estimate the association of spending 10 minutes more average daily time in one activity or bout length category, coupled with 10 minutes less time in another, with all-cause mortality. Those spending more time in MVPA had lower mortality risk, irrespective of whether this replaced time spent sleeping, sedentary, or in light activity, and these associations were of similar magnitude (e.g., hazard ratio [HR] 0.96 [95% CI: 0.94, 0.97; P < 0.001] per 10 minutes more MVPA, coupled with 10 minutes less light activity per day). Those spending more time sedentary had higher mortality risk if this replaced light activity (HR 1.02 [95% CI: 1.01, 1.02; P < 0.001] per 10 minutes more sedentary time, with 10 minutes less light activity per day) and an even higher risk if this replaced MVPA (HR 1.06 [95% CI: 1.05, 1.08; P < 0.001] per 10 minutes more sedentary time, with 10 minutes less MVPA per day). We found little evidence that mortality risk differed depending on the length of sedentary or MVPA bouts. Key limitations of our study are potential residual confounding, the limited length of follow-up, and use of a select sample of the United Kingdom population. Conclusions We have shown that time spent in MVPA was associated with lower mortality, irrespective of whether it replaced time spent sleeping, sedentary, or in light activity. Time spent sedentary was associated with higher mortality risk, particularly if it replaced MVPA. This emphasises the specific importance of MVPA. Our findings suggest that the impact of MVPA does not differ depending on whether it is obtained from several short bouts or fewer longer bouts, supporting the recent removal of the requirement that MVPA should be accumulated in bouts of 10 minutes or more from the UK and the United States policy. Further studies are needed to investigate causality and explore health outcomes beyond mortality.

scholarly journals Leading by Example: Association Between Mother and Child Objectively Measured Physical Activity and Sedentary Behavior

2020 ◽  
pp. 1-12
Author(s):  
Brad R. Julius ◽  
Amy M.J. O’Shea ◽  
Shelby L. Francis ◽  
Kathleen F. Janz ◽  
Helena Laroche
Keyword(s):  
Physical Activity ◽  
Sedentary Behavior ◽  
Low Income ◽  
Multivariate Regression ◽  
Sedentary Time ◽  
Vigorous Physical Activity ◽  
Mother And Child ◽  
Low Income Mothers ◽  
Objectively Measured ◽  
The Relationship

Purpose: The authors examined the relationship between mother and child activity. Methods: The authors compared moderate–vigorous physical activity (MVPA) and sedentary time of low-income mothers with obesity and their 6- to 12-year-old children on week (WD) and weekend (WE) days. A total of 196 mother–child pairs wore accelerometers simultaneously for a week. Mothers completed questionnaires. Spearman correlation and multivariate regression were used. Results: WE MVPA (accelerometry) was significantly correlated between mothers with children aged 6–7 (rs = .35) and daughters (rs = .27). Self-reported maternal PA time spent with one of their children was significantly correlated with the WE MVPA of all children (rs = .21) and children aged 8–10 (rs = .22) and with the WD MVPA of all children (rs = .15), children aged 8–10 (rs = .23), aged 11–12 (rs = .52), and daughters (rs = .37), and inversely correlated to the WD sedentary time of all children (rs = −.21), children aged 8–10 (rs = −.30), aged 11–12 (rs = −.34), daughters (rs = −.26), and sons (rs = −.22). In multivariate regression, significant associations were identified between reported child–mother PA time together and child MVPA and sedentary time (accelerometry). Conclusions: Mothers may influence the PA levels of their children with the strongest associations found in children aged 6–7 and daughters. Mother–child coparticipation in PA may lead to increased child MVPA and decreased sedentary behavior.

Abstract 016: Muscular Strength Predicts All-Cause Mortality Independent of MVPA in Women Ages 63-99 Years

Circulation ◽  
2018 ◽  
Vol 137 (suppl_1) ◽  
Author(s):  
Michael J LaMonte ◽  
David M Buchner ◽  
Cora E Lewis ◽  
Eileen Rillamas-Sun ◽  
John Bellettiere ◽  
...  
Keyword(s):  
Physical Activity ◽  
Standard Deviation ◽  
Muscle Strength ◽  
Grip Strength ◽  
Gait Speed ◽  
Muscular Strength ◽  
Sedentary Time ◽  
Lower Mortality ◽  
Race Ethnicity ◽  
Lower Mortality Risk

Background: While some studies report muscle strength is associated with mortality, independent of aerobic physical activity (PA), in older people, there are less data in women and lack of studies adjusting the association for objective measures of PA and physical performance. We prospectively examined this association in 5,061 multiethnic (White, 48.2%; Black, 34.0%; Hispanic, 17.9%) women ages 63-99 (mean 78.3) with complete information for analysis in the Objective Physical Activity and Cardiovascular Health Study. Methods: Quartile categories of dominant hand grip strength (<14, 14-18, 18.1-22.5, >22.5 kg) and EPESE categories of time to complete five consecutive unassisted chair stands (>16.6, 16.6-13.7, 13.6-11.2, <11.2 sec) were the muscle strength exposure measures. Primary covariables included age, race-ethnicity, current smoking, BMI, and number of comorbidities. Accelerometer measured moderate-to-vigorous PA (MVPA) and total sedentary time, and gait speed during a self-paced 8 meter walk test were further assessed as confounding factors. Cox regression was used to estimate hazard ratios (HR) and 95% confidence intervals (CI). Results: There were 306 (5.5%) all-cause deaths during a mean 3.3 year follow-up. Adjusting for primary covariables, significant inverse trends in mortality were observed across categories of grip strength, HR (95% CI) = 1.00 (ref), 0.70 (0.53, 0.93), 0.77 (0.56, 1.05), 0.59 (0.41, 0.87), trend p = .007, and chair stands, 1.00, 0.82 (0.62, 1.09), 0.76 (0.55, 1.04), 0.53 (0.36, 0.77), trend p <.001. Further adjustment for MVPA attenuated these associations which remained statistically significant, 1.00, 0.72, 0.81, 0.66, trend p = .032, and 1.00, 0.91, 0.88, 0.65, trend p = .033, respectively. Similarly, adding sedentary time or gait speed to the primary covariables did not eliminate significance of the inverse mortality trends with either muscle strength measure. Adjusting for primary covariables, each 1-standard deviation (6.2 sec) faster chair stand time was associated with 12% lower mortality risk (p = .004), which was attenuated to 8% risk reduction (p = .04) when further controlling for MVPA. Adjusting for primary covariables and MVPA, each 1-standard deviation (6.8 kg) increment in grip strength was associated with 13% lower mortality risk (p = .04), and this inverse association was generally consistent across subgroups defined by age (interaction p = .78), race-ethnicity (p = .19), and BMI (p = .88). Controlling for gait speed opposed to MVPA resulted in consistent findings. Conclusions: Higher muscular strength is associated with lower mortality in older women, independent of device-measured MVPA and sedentary time, and measured gait speed, an indicator of aerobic fitness. If results are confirmed, in addition to guideline recommendations regarding aerobic PA, promoting skeletal muscle strength is an important component of aging well.

scholarly journals Accelerometer-Measured Physical Activity and Sedentary Behavior Patterns in Taiwanese Adolescents

2019 ◽  
Vol 16 (22) ◽  
pp. 4392 ◽  
Author(s):  
Wen-Yi Wang ◽  
Yu-Ling Hsieh ◽  
Ming-Chun Hsueh ◽  
Yang Liu ◽  
Yung Liao
Keyword(s):  
Physical Activity ◽  
Sedentary Behavior ◽  
Sedentary Time ◽  
Vigorous Physical Activity ◽  
Activity Patterns ◽  
After School ◽  
Behavior Patterns ◽  
Activity Levels ◽  
School Time ◽  
Sedentary Bouts

Levels of physical activity and sedentary behavior among adolescents seem to vary within different settings, but few Asian studies have compared physical activity and sedentary activity patterns in adolescents across weekdays/weekends and during-school time/after-school time. This study aimed to provide objectively measured data describing intensity-specific physical activity and sedentary behavior patterns in Taiwanese adolescents. The results were sorted by gender and divided between weekdays/weekends and during-school time/after-school time. A total of 470 Taiwanese students (49.6% boys, ages 12–15 y) were recruited and fitted with GT3X+ accelerometers for seven days. Intensity-specific physical activity, total sedentary time, and sedentary bouts (number and duration ≥30 min) were measured. The Mann-Whitney U test was used to examine the significant differences in physical activity and sedentary behavior patterns between the genders on weekdays/weekends and during school/after-school time. The results show that the adolescents’ overall activity levels were below recommended thresholds, with girls engaging in significantly less moderate to vigorous physical activity, having longer sedentary time, longer time spent in sedentary bouts, and more frequent sedentary bouts than boys. Similar results were observed in physical activities of each intensity as well as sedentary behavior variables, both on weekdays/weekends and during-school/after-school periods. These findings emphasize the importance of developing and implementing approaches to increase moderate to vigorous physical activity, as well as decrease prolonged sedentary time and long sedentary bouts, especially for Taiwanese girls.

Evaluation of a Redesigned Outdoor Space on Preschool Children’s Physical Activity During Recess

2012 ◽  
Vol 24 (4) ◽  
pp. 507-518 ◽  
Author(s):  
Virginie Nicaise ◽  
David Kahan ◽  
Karen Reuben ◽  
James F. Sallis
Keyword(s):  
Physical Activity ◽  
Sedentary Behavior ◽  
Open Space ◽  
Environmental Changes ◽  
Vigorous Physical Activity ◽  
Light Activity ◽  
Outdoor Space ◽  
The Impact ◽  
Children’S Physical Activity ◽  
Cycle Path

This study investigated the impact of renovation and redesign of a university preschool’s outdoor space on children’s sedentary behavior, light activity, and moderate-to-vigorous-physical-activity (MVPA) during unstructured recess. Physical activity was measured by accelerometry and direct observation in two independent samples of 50 (baseline) and 57 (postintervention) children (Mage=4.4 yrs ± 0.5). Controlling for gender, age, BMI and recess length, observational data, but not accelerometry, revealed a significant decrease in intervals spent sedentary (-26.5%) and increases in light physical activity (+11.6%) and MVPA (+14.9%). Higher levels of MVPA were associated with specific environmental changes (new looping cycle path, OR = 2.18; increased playground open space, OR = 7.62; and new grass hill, OR = 3.27). Decreased sedentary behavior and increased light activity and MVPA may be realized with environmental changes that promote continuous and novel movement experiences in more expansive spaces.

scholarly journals Association of changing physical activity intensity and bout length with mortality: a study of 79,507 participants in UK Biobank

2020 ◽  
Author(s):  
Louise Amanda Claire Millard ◽  
Kate Tilling ◽  
Tom R Gaunt ◽  
David Carslake ◽  
Deborah A Lawlor
Keyword(s):  
Physical Activity ◽  
Mortality Risk ◽  
Analytical Approach ◽  
Vigorous Physical Activity ◽  
Hazard Ratio ◽  
Uk Biobank ◽  
Bout Length ◽  
All Cause Mortality ◽  
Light Activity ◽  
The Impact

Background Spending more time active (and less time sedentary) is associated with many health benefits such as improved cardiovascular health and lower risk of all-cause mortality. However, it is unclear whether these associations differ depending on whether time spent sedentary or in moderate-vigorous physical activity (MVPA) is accumulated in long or short bouts. In this study we used a novel analytical approach, that accounts for substitution (i.e. more time in MVPA means spending less time sleeping, in light activity or being sedentary), to examine whether length of sedentary and MVPA bouts associates with all-cause mortality. Methods and findings We used data on 79,507 participants from UK Biobank. We derived the total time participants spent in activity categories - sleep, sedentary, light activity and MVPA - on average per day. We also derived the time spent in sedentary and MVPA bouts of short (1-15 minutes), medium (16-40 minutes) and long (41+ minutes) duration. We used Cox proportion hazards regression to estimate the association of spending 10 minutes more average daily time in one activity or bout length category, coupled with spending 10 minutes less time in another, with all-cause mortality. Those spending more time sedentary had higher mortality risk if this replaced time spent in light activity (hazard ratio 1.02 [95% confidence interval (CI): 1.01, 1.03]), and an even higher risk if this replaced time spent in MVPA (hazard ratio 1.08 [95% CI: 1.06, 1.10]). Those spending more time in MVPA had lower mortality risk, irrespective of whether this replaced time spent sleeping, sedentary or in light activity. We found little evidence to suggest that mortality risk differed depending on the length of sedentary or MVPA bouts. A limitation of our study is that we cannot assume that these results are causal, though we adjusted for key confounders. Conclusions Using our novel analytical approach, we uniquely show that time spent in MVPA is associated with reduced mortality, irrespective of whether it replaces time spent sleeping, sedentary or in light activity. This emphasizes the specific importance of MVPA. We found little evidence to suggest that the impact of MVPA differs depending on whether it is obtained from several short bouts or fewer longer bouts, supporting recent policy changes in some countries. Further studies are needed to investigate causality and explore health outcomes beyond mortality.

scholarly journals Association of Sedentary and Active Bout Frequency With Mortality in Older Men Using Accelerometry

2021 ◽  
Vol 5 (Supplement_1) ◽  
pp. 969-970
Author(s):  
Lauren Roe ◽  
Stephanie Harrison ◽  
Kyle Moored ◽  
Kristine Ensrud ◽  
Katie Stone ◽  
...  
Keyword(s):  
Mortality Risk ◽  
Sedentary Time ◽  
Osteoporotic Fractures ◽  
Older Men ◽  
Transition Frequency ◽  
Lower Mortality ◽  
Cox Proportional Hazard ◽  
Mortality Models ◽  
Cox Proportional Hazard Models ◽  
Lower Mortality Risk

Abstract Background Time spent sedentary increases with age and has several negative health consequences. We sought to examine associations between daily sedentary and active bout frequency with all-cause mortality. Methods Data are from 2,918 men in the Osteoporotic Fractures in Men (MrOS) study (mean age at Visit 3±SD: 79.0±5.1 years) with valid activity monitor data (5.1±0.3 days worn&gt;90%) at Year 7 visit (Visit 3, 2007-2009). Sedentary and active bout frequencies are defined as the daily transition frequency from a sedentary bout lasting 5+ minutes to activity of any intensity, and the transition frequency from an active bout lasting 5+ minutes to sedentary. Deaths were centrally adjudicated using death certificates. Cox proportional hazard models were used to examine associations between quartiles of sedentary (Q1 referent, &lt;13.6 bouts/day) or active (Q1 referent, &lt;5 bouts/day) bout frequency and mortality. Models were repeated, stratifying by median daily total time spent sedentary and active. Results After 9.4±3.7 years of follow-up, 1,487 (51.0%) men died. Men averaged 16.9±5.1 and 8.2±4.2 sedentary and active bouts/day, respectively. After full covariate adjustment, each quartile reflecting a higher sedentary (Q4 vs Q1 HR: 0.68, 95%CI: 0.58-0.81, p-trend&lt;0.001) and active bout (Q4 vs Q1 HR: 0.57, 95%CI: 0.48-0.68, p-trend&lt;0.001) frequency was associated with lower mortality risk. There was no evidence that effects differed by total sedentary time (p-interaction for sedentary bout frequency and total sedentary time&gt;0.05). Conclusions More frequent, prolonged sedentary and active bouts are associated with a lower mortality risk in older men and is not moderated by total sedentary time.

Abstract 047: Sedentary Behavior Increases Risk for Cardiovascular Disease in Older Women: The Objective Physical Activity and Cardiovascular Health (OPACH) Study

Circulation ◽  
2018 ◽  
Vol 137 (suppl_1) ◽  
Author(s):  
John Bellettiere ◽  
Michael J LaMonte ◽  
Eileen Rillamas-Sun ◽  
Jacqueline Kerr ◽  
Kelly R Evenson ◽  
...  
Keyword(s):  
Physical Activity ◽  
Cardiovascular Disease ◽  
Sedentary Behavior ◽  
Older Women ◽  
Cardiovascular Health ◽  
Sedentary Time ◽  
Vigorous Physical Activity ◽  
Cvd Risk ◽  
Bout Duration ◽  
Increased Risk

Background: Evidence on sedentary behavior and cardiovascular disease (CVD) is largely based on self-reported sedentary time. Furthermore, how sedentary time is accumulated (in longer vs. shorter bouts) may be related to CVD risk but has not been tested. Methods: Women (n=5638, mean age=79±7) with no history of myocardial infarction or stroke wore accelerometers for 4-7 days and were followed for up to 4 years for incident CVD. Hazard ratios (HR) and 95% confidence intervals (CIs) for CVD and coronary heart disease (CHD) events were estimated across quartiles of sedentary time and mean sedentary bout duration using Cox proportional hazard models adjusting for covariates. Separate models evaluated associations after adding moderate-to-vigorous physical activity (MVPA) and possible mediators: body mass index, diabetes, hypertension, systolic blood pressure, fasting glucose, HDL-cholesterol, and triglycerides. We then tested whether mean bout duration was associated with increased risk for CVD and CHD among women with above median sedentary time (≥10hr/day). Results: Covariate-adjusted HRs for CVD and CHD increased across quartiles of both sedentary time and mean bout duration (Table). All CHD associations remained significant but attenuated after adjustment for possible mediators. After adjustment for MVPA, highest vs. lowest quartile HRs (CI) for CHD were 1.6 (0.7-3.4; p-trend = .08) for sedentary time and 1.8 (0.9-3.5; p-trend = .047) for mean bout duration. Among women with high sedentary time, the HRs (CI) comparing the 75 th vs. 25 th percentile of mean bout duration were 1.05 (0.95-1.15) for CVD and 1.16 (1.01-1.34) for CHD. Conclusions: Both sedentary time and mean bout duration showed independent, dose-response associations with increased risk of CVD and CHD events in older women. Among women with high sedentary time, longer mean bout duration was associated with higher CHD risk. Taken together, this provides evidence that both total sedentary time and the way it is accumulated are predictive of incident CHD.

Sign in / Sign up

Export Citation Format

Share Document