scholarly journals Does light-intensity physical activity moderate the relationship between sitting time and adiposity markers in adolescents?

2020 ◽  
Author(s):  
Ana María Contardo Ayala ◽  
Jo Salmon ◽  
David W. Dunstan ◽  
Lauren Arundell ◽  
Anna Timperio
Keyword(s):  
Physical Activity ◽  
Light Intensity ◽  
Sitting Time ◽  
Intensity Physical Activity ◽  
The Relationship

Breaking up sitting time after stroke (BUST-stroke)

2018 ◽  
Vol 13 (9) ◽  
pp. 921-931 ◽  
Author(s):  
Coralie English ◽  
Heidi Janssen ◽  
Gary Crowfoot ◽  
Robin Callister ◽  
Ashlee Dunn ◽  
...  
Keyword(s):  
Physical Activity ◽  
Glucose Metabolism ◽  
Light Intensity ◽  
Plasma Glucose ◽  
Recurrent Stroke ◽  
Blood Glucose Control ◽  
Random Order ◽  
Sitting Time ◽  
Experimental Conditions ◽  
Intensity Physical Activity

Objectives People with stroke sit for long periods each day, which may compromise blood glucose control and increase risk of recurrent stroke. Studies in other populations have found regular activity breaks have a significant immediate (within-day) positive effect on glucose metabolism. We examined the effects of breaking up uninterrupted sitting with frequent, short bouts of light-intensity physical activity in people with stroke on post-prandial plasma glucose and insulin. Methods Randomized within-participant crossover trial. We included people between 3 months and 10 years post-stroke, ambulant with minimal assistance and not taking diabetic medication other than metformin. The three experimental conditions (completed in random order) were: sitting for 8 h uninterrupted, sitting with 3 min bouts of light-intensity exercise while standing every 30 min, or sitting with 3 min of walking every 30 min. Meals were standardized and bloods were collected half- to one-hourly via an intravenous cannula. Results A total of 19 participants (9 female, mean [SD] age 68.2 [10.2]) completed the trial. The majority ( n = 12, 63%) had mild stroke symptoms (National Institutes of Stroke Scale score 0–13). There was no significant effect of experimental condition on glucose (mean [SD] positive incremental area [+iAUC] mmol·L·h-1 under the curve during sitting 42.3 [29.5], standing 47.4 [23.1], walking 44.6 [26.5], p = 0.563) or insulin (mean + iAUC pmol·L·h-1 sitting 14,161 [7,560], standing 14,043 [8,312], walking 14,008 [8,269], p = 0.987). Conclusion Frequent, short bouts of light-intensity physical activity did not have a significant effect on post-prandial plasma glucose and insulin in this sample of people with stroke. Further studies are needed to identify strategies that improve inactivity-related glucose metabolism after stroke.

Objectively Measured Age-Related Changes in the Intensity Distribution of Daily Physical Activity in Adults

2009 ◽  
Vol 6 (4) ◽  
pp. 419-425 ◽  
Author(s):  
Makoto Ayabe ◽  
Takuya Yahiro ◽  
Myumi Yoshioka ◽  
Hiroyuki Higuchi ◽  
Yasuki Higaki ◽  
...  
Keyword(s):  
Physical Activity ◽  
Light Intensity ◽  
Daily Physical Activity ◽  
Men And Women ◽  
Age Related ◽  
Intensity Physical Activity ◽  
Vigorous Intensity ◽  
Objectively Measured ◽  
The Relationship ◽  
Age Related Changes

Background:The purpose of the present investigation was to examine the relationship between age and the intensity of the daily physical activity in men and women, aged 18 to 69 years.Methods:A total 507 volunteers continuously wore a pedometer with a uni-ax-ial accelerometer (Lifecorder, Kenz, Japan) for 7 days, to determine the number of steps (steps/day) as well as the time spent in physical activity (minutes/day) at light (below 3 METs), moderate (3 to 6 METs), and vigorous (above 6 METs) intensities, respectively. All procedures carried out in the present investigation were conducted from 1999 to 2000 in Japan.Results:The time spent in moderate to vigorous intensity physical activity significantly decreased with aging (P < 0.01). In contrast, the middle- to older-aged individuals spent a longer time in light intensity physical activity in comparison with the younger individuals (P < 0.05). Furthermore, these age-associated differences of physical activity were also significant, even though the number of steps did not differ significantly.Conclusions:These results indicate that the intensity of daily physical activity decreases with increasing age regardless of the amount of daily physical activity.

Frequent, short bouts of light-intensity exercises while standing decreases systolic blood pressure: Breaking Up Sitting Time after Stroke (BUST-Stroke) trial

2018 ◽  
Vol 13 (9) ◽  
pp. 932-940 ◽  
Author(s):  
Coralie English ◽  
Heidi Janssen ◽  
Gary Crowfoot ◽  
Josephine Bourne ◽  
Robin Callister ◽  
...  
Keyword(s):  
Physical Activity ◽  
Blood Pressure ◽  
Light Intensity ◽  
Systolic Blood Pressure ◽  
Plasma Fibrinogen ◽  
Sitting Time ◽  
Stroke Survivors ◽  
Clotting Factors ◽  
Increased Risk ◽  
Intensity Physical Activity

Background Stroke survivors sit for long periods each day. Uninterrupted sitting is associated with increased risk of cardiovascular disease. Breaking up uninterrupted sitting with frequent, short bouts of light-intensity physical activity has an immediate positive effect on blood pressure and plasma clotting factors in healthy, overweight, and type 2 diabetic populations. Aim We examined the effect of frequent, short bouts of light-intensity physical activity on blood pressure and plasma fibrinogen in stroke survivors. Methods Prespecified secondary analyses from a three-armed randomized, within-participant, crossover trial. Participants were 19 stroke survivors (nine female, aged 68 years old, 90% able to walk independently). The experimental conditions were sitting for 8 h uninterrupted, sitting with 3 min bouts of light-intensity exercise while standing every 30 min, or sitting with 3 min of walking every 30 min. Blood pressure was measured every 30 min over 8 h and plasma fibrinogen at the beginning, middle, and end of each day. Intention-to-treat analyses were performed using linear mixed models including fixed effects for condition, period, and order, and a random intercept for participant to account for repeated measures and missing data. Results Sitting with 3 min bouts of light-intensity exercise while standing every 30 min decreased systolic blood pressure by 3.5 mmHg (95% CI 1.7–5.4) compared with sitting for 8 h uninterrupted. For participants not taking antihypertensive medications, sitting with 3 min of walking every 30 min decreased systolic blood pressure by 5.0 mmHg (95% CI −7.9 to 2.0) and sitting with 3 min bouts light-intensity exercise while standing every 30 min decreased systolic blood pressure by 4.2 mmHg (95% CI −7.2 to −1.3) compared with sitting for 8 h uninterrupted. There was no effect of condition on diastolic blood pressure (p = 0.45) or plasma fibrinogen levels (p = 0.91). Conclusion Frequent, short bouts of light-intensity physical activity decreases systolic blood pressure in stroke survivors. However, before translation into clinical practice, the optimal duration and timing of physical activity bouts needs to be determined. Clinical trial registration Australian and New Zealand Clinical Trials Registry http://www.anzctr.org.au ANZTR12615001189516.

scholarly journals How does light-intensity physical activity associate with adult cardiometabolic health and mortality? Systematic review with meta-analysis of experimental and observational studies

2018 ◽  
Vol 53 (6) ◽  
pp. 370-376 ◽  
Author(s):  
Sebastien F M Chastin ◽  
Marieke De Craemer ◽  
Katrien De Cocker ◽  
Lauren Powell ◽  
Jelle Van Cauwenberg ◽  
...  
Keyword(s):  
Physical Activity ◽  
Light Intensity ◽  
Observational Studies ◽  
Meta Analysis ◽  
Experimental Studies ◽  
Cardiometabolic Health ◽  
Light Physical Activity ◽  
Intensity Physical Activity ◽  
Light Activity ◽  
The Relationship

AimTo assess the relationship between time spent in light physical activity and cardiometabolic health and mortality in adults.DesignSystematic review and meta-analysis.Data sourcesSearches in Medline, Embase, PsycInfo, CINAHL and three rounds of hand searches.Eligibility criteria for selecting studiesExperimental (including acute mechanistic studies and physical activity intervention programme) and observational studies (excluding case and case–control studies) conducted in adults (aged ≥18 years) published in English before February 2018 and reporting on the relationship between light physical activity (<3 metabolic equivalents) and cardiometabolic health outcomes or all-cause mortality.Study appraisal and synthesisStudy quality appraisal with QUALSYST tool and random effects inverse variance meta-analysis.ResultsSeventy-two studies were eligible including 27 experimental studies (and 45 observational studies). Mechanistic experimental studies showed that short but frequent bouts of light-intensity activity throughout the day reduced postprandial glucose (−17.5%; 95% CI −26.2 to −8.7) and insulin (−25.1%; 95% CI −31.8 to –18.3) levels compared with continuous sitting, but there was very limited evidence for it affecting other cardiometabolic markers. Three light physical activity programme intervention studies (n ranging from 12 to 58) reduced adiposity, improved blood pressure and lipidaemia; the programmes consisted of activity of >150 min/week for at least 12 weeks. Six out of eight prospective observational studies that were entered in the meta-analysis reported that more time spent in daily light activity reduced risk of all-cause mortality (pooled HR 0.71; 95% CI 0.62 to 0.83).ConclusionsLight-intensity physical activity could play a role in improving adult cardiometabolic health and reducing mortality risk. Frequent short bouts of light activity improve glycaemic control. Nevertheless, the modest volume of the prospective epidemiological evidence base and the moderate consistency between observational and laboratory evidence inhibits definitive conclusions.

scholarly journals Daily Sitting for Long Periods Increases the Odds for Subclinical Atheroma Plaques

2021 ◽  
Vol 10 (6) ◽  
pp. 1229
Author(s):  
Jose Luis Perez-Lasierra ◽  
Martin Laclaustra ◽  
Pilar Guallar-Castillón ◽  
Jose Antonio Casasnovas ◽  
Jose Antonio Casajús ◽  
...  
Keyword(s):  
Physical Activity ◽  
Subclinical Atherosclerosis ◽  
Sitting Time ◽  
Health Study ◽  
Activity Levels ◽  
Cross Sectional ◽  
Trained Personnel ◽  
Atherosclerosis Development ◽  
Sectional Analysis ◽  
The Relationship

Sedentarism is a risk factor for cardiovascular disease (CVD), but currently it is not clear how a sedentary behavior such as long sitting time can affect atherosclerosis development. This study examined the relationship between sitting time and the prevalence of carotid and femoral subclinical atherosclerosis. A cross-sectional analysis based on a subsample of 2082 participants belonging to the Aragon Workers’ Health Study was carried out. Ultrasonography was used to assess the presence of plaques in carotid and femoral territories; the validated Spanish version of the questionnaire on the frequency of engaging in physical activity used in the Nurses’ Health Study and the Health Professionals’ was used to assess physical activity and sitting time; and demographic, anthropometric, and clinical data were obtained by trained personnel during the annual medical examination. Participants were categorized into <9 h/day and ≥9 h/day sitting time groups. After adjusting for several confounders, compared with participants that remain seated <9 h/day, those participants who remain seated ≥9 h/day had, respectively, OR = 1.25 (95%CI: 1.01, 1.55, p < 0.05) and OR = 1.38 (95%CI: 1.09, 1.74, p < 0.05) for carotid and any-territory plaque presence. Remaining seated ≥9 h/day is associated with higher odds for carotid and any-territory plaque presence independently of physical activity levels and other cardiovascular risk factors.

Duration–Response of Light-Intensity Physical Activity and Glucose Dynamics in Older Adults

2019 ◽  
Vol 16 (1) ◽  
pp. 37-42 ◽  
Author(s):  
Whitney A. Welch ◽  
Scott J. Strath ◽  
Michael Brondino ◽  
Renee Walker ◽  
Ann M. Swartz
Keyword(s):  
Physical Activity ◽  
Older Adults ◽  
Light Intensity ◽  
Intensity Physical Activity ◽  
Glucose Dynamics

scholarly journals Objective Light-Intensity Physical Activity Associations With Rated Health in Older Adults

2010 ◽  
Vol 172 (10) ◽  
pp. 1155-1165 ◽  
Author(s):  
M. P. Buman ◽  
E. B. Hekler ◽  
W. L. Haskell ◽  
L. Pruitt ◽  
T. L. Conway ◽  
...  
Keyword(s):  
Physical Activity ◽  
Older Adults ◽  
Light Intensity ◽  
Intensity Physical Activity

scholarly journals Longitudinal Changes in Sitting Patterns, Physical Activity, and Health Outcomes in Adolescents

Children ◽  
2018 ◽  
Vol 6 (1) ◽  
pp. 2 ◽  
Author(s):  
Ana Contardo Ayala ◽  
Jo Salmon ◽  
David Dunstan ◽  
Lauren Arundell ◽  
Kate Parker ◽  
...  
Keyword(s):  
Physical Activity ◽  
Vigorous Physical Activity ◽  
Activity Patterns ◽  
Sitting Time ◽  
Linear Regression Models ◽  
Anthropometric Measures ◽  
Prolonged Sitting ◽  
Intensity Physical Activity ◽  
Changes Over Time

This study examined two-year changes in patterns of activity and associations with body mass index (BMI) and waist circumference (WC) among adolescents. Inclinometers (activPAL) assessed sitting, sitting bouts, standing, stepping, and breaks from sitting. ActiGraph-accelerometers assessed sedentary time (SED), light-intensity physical activity (LIPA, stratified as low- and high-LIPA), and moderate-to-vigorous physical activity (MVPA). Anthropometric measures were objectively assessed at baseline and self-reported at follow-up. Data from 324 and 67 participants were obtained at baseline and follow-up, respectively. Multilevel mixed-effects linear regression models examined changes over time, and associations between baseline values and BMI and WC at follow-up. There were significant increases in BMI (0.6 kg/m2) and durations of prolonged sitting (26.4 min/day) and SED (52 min/day), and significant decreases in stepping (−19 min/day), LIPA (−33 min/day), low-LIPA (−26 min/day), high-LIPA (−6.3 min/day), MVPA (−19 min/day), and the number of breaks/day (−8). High baseline sitting time was associated (p = 0.086) with higher BMI at follow-up. There were no significant associations between baseline sitting, prolonged sitting, LIPA, or MVPA with WC. Although changes in daily activity patterns were not in a favourable direction, there were no clear associations with BMI or WC. Research with larger sample sizes and more time points is needed.

Sedentarism and light-intensity physical activity (in COPD)

2020 ◽  
pp. 335-345
Author(s):  
Kylie Hill ◽  
Zoe McKeough ◽  
Daniel F. Gucciardi
Keyword(s):  
Physical Activity ◽  
Light Intensity ◽  
Intensity Physical Activity
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