The Association of School Friends on Objectively Measured Physical Activity and Sedentary Behavior, and Reported Screen Time

Abstract Background Older adults are recommended to sleep 7–8 h/day. Time in bed (TIB) differs from sleep duration and includes also the time of lying in bed without sleeping. Long TIB (≥9 h) are associated with self-reported sedentary behavior, but the association between objectively measured physical activity, sedentary behavior and TIB is unknown. Methods This study was based on cross-sectional analysis of the Healthy Ageing Network of Competence (HANC Study). Physical activity and sedentary behaviour were measured by a tri-axial accelerometer (ActiGraph) placed on the dominant wrist for 7 days. Sedentary behavior was classified as < 2303 counts per minute (cpm) in vector magnitude and physical activity intensities were categorized, as 2303–4999 and ≥ 5000 cpm in vector magnitude. TIB was recorded in self-reported diaries. Participants were categorized as UTIB (usually having TIB 7–9 h/night: ≥80% of measurement days), STIB (sometimes having TIB 7–9 h/night: 20–79% of measurement days), and RTIB (rarely having TIB 7–9 h/night: < 20% of measurement days). Multinominal regression models were used to calculate the relative risk ratios (RRR) of being RTIB and STIB by daily levels of physical activity and SB, with UTIB as the reference group. The models were adjusted for age, sex, average daily nap length and physical function. Results Three hundred and fourty-one older adults (median age 81 (IQR 5), 62% women) were included with median TIB of 8 h 21 min (1 h 10 min)/day, physical activity level of 2054 (864) CPM with 64 (15) % of waking hours in sedentary behavior. Those with average CPM within the highest tertile had a lower RRR (0.33 (0.15–0.71), p = 0.005) for being RTIB compared to those within the lowest tertile of average CPM. Accumulating physical activity in intensities 2303–4999 and ≥ 5000 cpm/day did not affect the RRR of being RTIB. RRR of being RTIB among highly sedentary participants (≥10 h/day of sedentary behavior) more than tripled compared to those who were less sedentary (3.21 (1.50–6.88), p = 0.003). Conclusions For older adults, being physically active and less sedentary was associated with being in bed for 7–9 h/night for most nights (≥80%). Future longitudinal studies are warranted to explore the causal relationship sbetween physical activity and sleep duration.

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Levels of objectively measured physical activity and sedentary behavior in the PRIMROSE trial

European Journal of Public Health ◽

10.1093/eurpub/ckv174.068 ◽

2015 ◽

Vol 25 (suppl_3) ◽

Author(s):

D Berglind ◽

L Hansson ◽

P Tynelius ◽

F Rasmussen

Keyword(s):

Physical Activity ◽

Sedentary Behavior ◽

Objectively Measured ◽

Objectively Measured Physical Activity

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Association Between Accelerometer-Measured Physical Activity Intensities and Sedentary Time in 8- to 10-Year-Old Children

Pediatric Exercise Science ◽

10.1123/pes.2012-0128 ◽

2014 ◽

Vol 26 (1) ◽

pp. 76-85 ◽

Cited By ~ 8

Author(s):

Katya M. Herman ◽

Gilles Paradis ◽

Marie-Eve Mathieu ◽

Jennifer O’Loughlin ◽

Angelo Tremblay ◽

...

Keyword(s):

Public Health ◽

Physical Activity ◽

Linear Regression ◽

Video Game ◽

Screen Time ◽

Sedentary Time ◽

Objectively Measured ◽

Public Health Strategies ◽

Objectively Measured Physical Activity ◽

Daily Total

This study examines the association between objectively-measured physical activity (PA) intensities and sedentary behavior (SED) in a cohort of 532 children aged 8–10 y. PA and SED were assessed by accelerometer over 7-days. Television and computer/video-game use were self-reported. Associations between PA intensities and SED variables were assessed by Spearman correlations and adjusted multiple linear regression. Higher mean daily moderate-to-vigorous and vigorous PA (MVPA, VPA) were negatively associated with mean daily SED (r = −0.47 and −0.37; p < .001), and positively associated with mean daily total PA (r = .58 and 0.46; p < .001). MVPA was also positively associated with light PA (LPA; r = .26, p < .00l). MVPA and VPA were not significantly associated with TV, computer/video or total screen time; accelerometer SED was only weakly associated with specific SED behaviors. On average, for each additional 10 min daily MVPA, children accumulated >14 min less SED, and for each additional 5 min VPA, 11 min less SED. Thus, over the course of a week, higher mean daily MVPA may displace SED time and is associated with higher total PA over and above the additional MVPA, due to concomitant higher levels of LPA. Public health strategies should target both MVPA and SED to improve overall PA and health in children.

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Accelerometer-Determined Sedentary and Physical Activity Estimates Among Older Adults With Diabetes: Considerations by Demographic and Comorbidity Characteristics

Journal of Aging and Physical Activity ◽

10.1123/japa.2013-0019 ◽

2014 ◽

Vol 22 (3) ◽

pp. 432-440 ◽

Cited By ~ 14

Author(s):

Paul D. Loprinzi

Keyword(s):

Physical Activity ◽

Older Adults ◽

Sedentary Behavior ◽

Population Level ◽

National Sample ◽

Nutrition Examination Survey ◽

Health And Nutrition ◽

Objectively Measured ◽

Objectively Measured Physical Activity ◽

Sedentary Activities

Understanding of the objectively measured physical activity (PA) and sedentary patterns of adults with diabetes at the population level is currently limited. Therefore, the purpose of this study was to report accelerometer-determined PA and sedentary patterns among a national sample of U.S. adults with and without evidence of diabetes and to also explore differences across other comorbidity characteristics. Data from the 2003–2006 National Health and Nutrition Examination Survey were used. Four hundred seven participants had evidence of diabetes (mean age = 73.4 years), and 1,346 did not have diabetes (mean age = 74.3 years). Results showed that few older adults meet PA guidelines; the majority of their time is spent in sedentary activities; very few engage in more light-intensity PA than sedentary behavior; and older adults with multiple comorbidities engage in less PA and more sedentary behavior than their counterparts. The development and implementation of feasible, effective PA programs for older adults with multiple comorbidities are warranted.

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Association Between Employment Status and Objectively Measured Physical Activity and Sedentary Behavior—The Maastricht Study

Journal of Occupational and Environmental Medicine ◽

10.1097/jom.0000000000001254 ◽

2018 ◽

Vol 60 (4) ◽

pp. 309-315 ◽

Cited By ~ 8

Author(s):

Anna Pulakka ◽

Sari Stenholm ◽

Hans Bosma ◽

Nicolaas C. Schaper ◽

Hans H.C.M. Savelberg ◽

...

Keyword(s):

Physical Activity ◽

Sedentary Behavior ◽

Employment Status ◽

Objectively Measured ◽

Objectively Measured Physical Activity

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Effect of Elimination Games on Physical Activity and Psychosocial Responses in Children

Journal of Physical Activity and Health ◽

10.1123/jpah.7.4.475 ◽

2010 ◽

Vol 7 (4) ◽

pp. 475-483 ◽

Cited By ~ 12

Author(s):

Karla E. Foster ◽

Timothy K. Behrens ◽

Abigail L. Jager ◽

David A. Dzewaltowski

Keyword(s):

Physical Activity ◽

Sedentary Behavior ◽

Peer Victimization ◽

Self Efficacy ◽

Vigorous Physical Activity ◽

Preliminary Evidence ◽

Before And After ◽

Psychosocial Responses ◽

Objectively Measured ◽

Objectively Measured Physical Activity

Background:This study evaluated the effect of elimination and nonelimination games on objectively measured physical activity and psychosocial responses in children.Methods:A total of 29 children in grades 4 to 6 (65.5% male; 10.5 ± 1.0 years old) wore an accelerometer while participating in 2 elimination and 2 nonelimination games. Activity counts were collected using a 30-second epoch and converted to METs to determine minutes spent in sedentary behavior and light, moderate, vigorous, and moderate-to-vigorous physical activity. Self-efficacy, enjoyment, and peer-victimization were assessed on 4 occasions (before and after 2 elimination and 2 nonelimination games).Results:Overall, girls spent more time in sedentary behavior compared with boys. Children engaged in significantly more moderate-to-vigorous physical activity during nonelimination games compared with elimination games. Furthermore, children significantly increased self-efficacy after playing both game sessions. A significant interaction between type of game and time of measurement in the prediction of enjoyment showed that enjoyment modestly increased after elimination games and slightly decreased after nonelimination games. There were no differences in peer-victimization.Conclusion:This study provides preliminary evidence that nonelimination games provide more moderate-to-vigorous physical activity compared with elimination games, but elimination games may be more enjoyable.

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