scholarly journals Accelerometer-measured habitual physical activity and sedentary time in pediatric concussion: A controlled cohort study.

2021 ◽  
Author(s):  
Bhanu Sharma ◽  
Joyce Obeid ◽  
Carol DeMatteo ◽  
Michael D Noseworthy ◽  
Brian W Timmons
Keyword(s):  
Physical Activity ◽  
Clinical Management ◽  
Sedentary Time ◽  
Vigorous Physical Activity ◽  
Habitual Physical Activity ◽  
Moderate Physical Activity ◽  
Accelerometer Data ◽  
Healthy Controls ◽  
Exercise Interventions ◽  
Pediatric Concussion

Objectives: To characterize and quantify differences in accelerometer-measured physical activity and sedentary time between children with concussion (within the first month of injury) and 1:1 matched healthy controls. Methods: Secondary analysis of accelerometer data collected on 60 children with concussion and 60 healthy controls matched for age, sex, and season of accelerometer wear. Daily and hourly sedentary time, light physical activity (LPA), moderate physical activity (MPA), and vigorous physical activity (VPA) were compared between groups per independent samples t-tests. Results: Children with concussion (12.74 ± 2.85 years, 31 females) were significantly more sedentary than controls (12.43 ± 2.71 years, 31 females; mean difference [MD], 38.3 minutes/day, p=0.006), and spent less time performing LPA (MD, -19.5 minutes/day, p=0.008), MPA (MD, -9.8 minutes/day, p<0.001), and VPA(MD, -12.0 minutes/day, p<0.001); hour-by-hour analyses showed that these differences were observed from 8:00AM to 9:00PM. Sex-specific analyses identified that girls with concussion were less active and more sedentary than both boys with concussion (MD, 50.8 minutes/day; p=0.010) and healthy girls (MD, 51.1 minutes/day; p<0.010). Days post-injury significantly predicted MPA (β=0.071, p=0.032) and VPA (β=0.095, p=0.004), but not LPA or sedentariness in children with concussion. Conclusion: Clinical management should continue to advise against prolonged rest following pediatric concussion, given the activity debt observed within the first-month of injury. Currently, clinical management of concussion is shifting towards prescribing a single bout of daily sub-maximal aerobic exercise. Interventions aimed at reducing overall sedentary time and increasing habitual physical activity in pediatric concussion also warrant study.

scholarly journals Exploring the relationship between resting state intra-network connectivity and accelerometer-measured physical activity in pediatric concussion: A cohort study.

2021 ◽  
Author(s):  
Bhanu Sharma ◽  
Joyce Obeid ◽  
Carol DeMatteo ◽  
Michael D Noseworthy ◽  
Brian W Timmons
Keyword(s):  
Physical Activity ◽  
Resting State ◽  
Sedentary Time ◽  
Vigorous Physical Activity ◽  
Network Connectivity ◽  
Habitual Physical Activity ◽  
Moderate Physical Activity ◽  
Accelerometer Data ◽  
Resting State Functional Connectivity ◽  
Pediatric Concussion

Objectives: To explore the association between resting state functional connectivity and accelerometer-measured physical activity in pediatric concussion. Methods: Fourteen children with concussion (aged 14.54 ± 2.39 years, 8 female) were included in this secondary data-analysis. Participants had neuroimaging at 15.3 ± 6.7 days post-injury and subsequently a mean of 11.1 ± 5.0 days of accelerometer data. Intra-network connectivity of the default mode network (DMN), sensorimotor network (SMN), salience network (SN), and fronto-parietal network (FPN) was computed. Results: Per general linear models, only intra-network connectivity of the DMN was associated with habitual physical activity levels. More specifically, increased intra-network connectivity of the DMN was significantly associated with higher levels of subsequent accelerometer-measured light physical activity (F(2, 11) = 7.053, p = 0.011, Ra2 = 0.562; β = 0.469), moderate physical activity (F(2, 11) = 7.053, p = 0.011, Ra2 = 0.562; β = 0.725), and vigorous physical activity (F(2, 11) = 10.855, p = 0.002, Ra2 = 0.664; β = 0.79). Intra-network connectivity of the DMN did not significantly predict sedentary time. Likewise, the SMN, SA, and FPN were not significantly associated with either sedentary time or physical activity. Conclusion: These findings suggest that there is a positive association between the intra-network connectivity of the DMN and device-measured physical activity in children with concussion. Given that DMN impairment can be commonplace following concussion, this may be associated with lower levels of habitual physical activity, which can preclude children from experiencing the symptom-improving benefits of sub-maximal physical activity.

scholarly journals Reliability of GENEActiv accelerometers to estimate sleep, physical activity, and sedentary time in children

2021 ◽  
Vol 18 (1) ◽  
Author(s):  
Devan Antczak ◽  
Chris Lonsdale ◽  
Borja del Pozo Cruz ◽  
Philip Parker ◽  
Taren Sanders
Keyword(s):  
Physical Activity ◽  
Sedentary Time ◽  
Vigorous Physical Activity ◽  
Sleep Onset ◽  
Reliable Estimate ◽  
Moderate Physical Activity ◽  
Accelerometer Data ◽  
Wake Time ◽  
Time In Bed ◽  
Minimum Criteria

Abstract Background Reliable estimates of habitual sleep, physical activity, and sedentary time are essential to investigate the associations between these behaviours and health outcomes. While the number of days needed and hours/day for estimates of physical activity and sedentary time are generally known, the criteria for sleep estimates are more uncertain. The objective of this study was to identify the number of nights needed to obtain reliable estimates of habitual sleep behaviour using the GENEActiv wrist worn accelerometer. The number of days to obtain reliable estimate of physical activity was also examined. Methods Data was used from a two-year longitudinal study. Children wore an accelerometer for up to 8 days 24 h/day across three timepoints. The sample included 2,745 children (51 % girls) between the ages of 7-12-years-old (mean = 9.8 years, SD = 1.1 year) with valid accelerometer data from any timepoint. Reliability estimates were calculated for sleep duration, sleep efficiency, sleep onset, wake time, time in bed, light physical activity, moderate physical activity, moderate-to-vigorous physical activity, vigorous physical activity, and sedentary time. Results Intraclass correlations and the Spearman Brown prophecy formula were used to determine the nights and days needed for reliable estimates. We found that between 3 and 5 nights were needed to achieve acceptable reliability (ICC = 0.7) in sleep outcomes, while physical activity and sedentary time outcomes required between 3 and 4 days. Conclusions To obtain reliable estimates, researchers should consider these minimum criteria when designing their studies and prepare strategies to ensure sufficient wear time compliance.

scholarly journals Children and Adolescents Treated for Valvular Aortic Stenosis Have Different Physical Activity Patterns Compared to Healthy Controls: A Methodological Study in a National Cohort

2021 ◽  
Author(s):  
Pia Skovdahl ◽  
Cecilia Kjellberg Olofsson ◽  
Jan Sunnegårdh ◽  
Jonatan Fridolfsson ◽  
Mats Börjesson ◽  
...  
Keyword(s):  
Physical Activity ◽  
High Resolution ◽  
Aortic Stenosis ◽  
Children And Adolescents ◽  
Sedentary Time ◽  
Heart Defects ◽  
Sports Participation ◽  
Accelerometer Data ◽  
Healthy Controls ◽  
Valvular Aortic Stenosis

AbstractPrevious research in children and adolescents with congenital heart defects presents contradictory findings concerning their physical activity (PA) level, due to methodological limitations in the PA assessment. The aim of the present cross-sectional study was to compare PA in children and adolescents treated for valvular aortic stenosis with healthy controls using an improved accelerometer method. Seven-day accelerometer data were collected from the hip in a national Swedish sample of 46 patients 6–18 years old treated for valvular aortic stenosis and 44 healthy controls matched for age, gender, geography, and measurement period. Sports participation was self-reported. Accelerometer data were processed with the new improved Frequency Extended Method and with the traditional ActiGraph method for comparison. A high-resolution PA intensity spectrum was investigated as well as traditional crude PA intensity categories. Children treated for aortic stenosis had a pattern of less PA in the highest intensity spectra and had more sedentary time, while the adolescent patients tended to be less physically active in higher intensities overall and with less sedentary time, compared to the controls. These patterns were evident using the Frequency Extended Method with the detailed PA intensity spectrum, but not to the same degree using the ActiGraph method and traditional crude PA intensity categories. Patients reported less sports participation than their controls in both age-groups. Specific differences in PA patterns were revealed using the Frequency Extended Method with the high-resolution PA intensity spectrum in Swedish children and adolescents treated for valvular aortic stenosis.

Accelerometer-Assessed Habitual Physical Activity and Sedentary Time of Chinese Children and Adolescents with Visual Impairments

2020 ◽  
Vol 114 (5) ◽  
pp. 421-431
Author(s):  
Jing Qi ◽  
Wen Hong Xu ◽  
Li Juan Wang ◽  
Qi Di Li
Keyword(s):  
Physical Activity ◽  
Body Composition ◽  
Children And Adolescents ◽  
Sedentary Time ◽  
Vigorous Physical Activity ◽  
Visual Impairments ◽  
Habitual Physical Activity ◽  
Chinese Children ◽  
Future Research ◽  
Chinese Children And Adolescents

Introduction: Physical activity is a key component of a healthy lifestyle for youths with visual impairments (i.e., blindness or low vision). This study aims to examine the habitual physical activity and sedentary time of Chinese children and adolescents with visual impairments and to determine whether age, gender, and body composition significantly influence their behavior. Methods: A purposeful sample method was utilized to recruit 137 Chinese youths with visual impairments from a special school for individuals with visual and hearing impairments. A total of 72 students with visual impairments (aged 7–17 years; M age = 13.4) participated in this study. ActiGraph GT3X accelerometers were used to measure the habitual physical activity and sedentary time. Results: Youths with visual impairments in this study spent an average of 287.86 (standard deviation [ SD] = 45.67) minutes of light physical activity, 146.79 ( SD = 56.95) minutes of moderate physical activity, 18.47 ( SD = 15.15) minutes of vigorous physical activity, 165.26 ( SD = 69.83) minutes of moderate-to-vigorous-intensity physical activity, and 979.51 ( SD = 109.10) minutes of sedentary time per day. Children with visual impairments in elementary school engaged in more habitual physical activity and had less sedentary time than did students in middle and high school. Differences in gender and body composition with regard to time spent being active or sedentary were insignificant. Discussion: Findings demonstrated that Chinese youths with visual impairments in this study had sufficient health-enhancing physical activity and were habitually active. Future research is needed to identify the factors that account for the high habitual physical activity levels of Chinese youths with visual impairments. Implications for practitioners: Transition planning for students with visual impairments to facilitate active habitual physical activity participation when children grow up is warranted.

scholarly journals Relationship of Physical Activity and Sedentary Time with Metabolic Health in Children and Adolescents Measured by Accelerometer: A Narrative Review

Healthcare ◽  
2021 ◽  
Vol 9 (6) ◽  
pp. 709
Author(s):  
Jungjun Lim ◽  
Joon-Sik Kim ◽  
Soyoung Park ◽  
On Lee ◽  
Wi-Young So
Keyword(s):  
Physical Activity ◽  
Data Collection ◽  
Children And Adolescents ◽  
Sedentary Time ◽  
Vigorous Physical Activity ◽  
Health Indicators ◽  
Metabolic Health ◽  
Moderate Intensity ◽  
Accelerometer Data ◽  
Relationship Of

The purpose of this study was to summarize the associations of physical activity (PA) and sedentary time (SED) with metabolic health and examine the effects of time reallocation on metabolic health in adolescents using accelerometer data. A literature search was conducted using PubMed, ScienceDirect, Web of Science, Cochran Library, and Google Scholar, and 27 articles were reviewed. Recent research generally confirms the associations of PA and SED with metabolic health. High PA levels and low SED levels had a positive relationship with metabolic health. Moreover, reallocating 10 min of daily SED to PA was associated with better metabolic health indicators. These results were stronger for moderate-to-vigorous physical activity than for light intensity PA. Thus, efforts to convert SED into PA of at least moderate intensity appear to be an effective strategy to prevent metabolic disease development in children and adolescents. However, some of the associations between PA and metabolic health indicators were inconsistent, depending on age, obesity degree, and PA intensity. Additionally, various accelerometer data collection and processing criteria impact the interpretation of the results. Therefore, consistent accelerometer data collection and analysis methods are needed in future studies. Further, intervention studies are required to verify the causality and effectiveness of the isotemporal substitution model.

scholarly journals The Relationship of Accelerometer-Assessed Standing Time With and Without Ambulation and Mortality: The WHI OPACH Study

2020 ◽  
Vol 76 (1) ◽  
pp. 77-84
Author(s):  
Purva Jain ◽  
John Bellettiere ◽  
Nicole Glass ◽  
Michael J LaMonte ◽  
Chongzhi Di ◽  
...  
Keyword(s):  
Physical Activity ◽  
Mortality Risk ◽  
Sedentary Time ◽  
Vigorous Physical Activity ◽  
Community Dwelling ◽  
Machine Learning Algorithms ◽  
Cardiovascular Health Study ◽  
Accelerometer Data ◽  
All Cause Mortality

Abstract Background Self-reported time spent standing has been associated with lower risk of mortality. No previous studies have examined this association using device-measured standing. Method This was a prospective cohort study of 5878 older (median age = 80 years), racial/ethnically diverse, community-dwelling women in the WHI Objective Physical Activity and Cardiovascular Health Study (OPACH). Women wore accelerometers for 1 week and were followed for mortality. The study applied previously validated machine learning algorithms to ActiGraph GT3X+ accelerometer data to separately measure time spent standing with and without ambulation. Cox proportional hazards models were used to estimate mortality risk adjusting for potential confounders. Effect modification by age, body mass index, moderate-to-vigorous physical activity, sedentary time, physical functioning, and race/ethnicity was evaluated. Results There were 691 deaths during 26 649 person-years of follow-up through March 31, 2018 (mean follow-up = 4.8 years). In fully adjusted models, all-cause mortality risk was lower among those with more standing without ambulation (quartile [Q] 4 vs Q1 HR = 0.63; 95% CI = 0.49–0.81, p-trend = .003) and more standing with ambulation (Q4 vs Q1 HR = 0.50; 95% CI = 0.35–0.71, p-trend &lt; .001). Associations of standing with ambulation and mortality were stronger among women with above-median sedentary time (HR = 0.51; 95% CI = 0.38–0.68) compared to women with below-median sedentary time (HR = 0.80; 95% CI = 0.59–1.07; p-interaction = .02). Conclusions In this prospective study among older women, higher levels of accelerometer-measured standing were associated with lower risks of all-cause mortality. Standing is an achievable approach to interrupting prolonged sedentary time, and if not contraindicated, is a safe and feasible behavior that appears to benefit health in older ages.

scholarly journals Cross‐Sectional Associations of Objectively Measured Sedentary Time, Physical Activity, and Fitness With Cardiac Structure and Function: Findings From the Dallas Heart Study

2021 ◽  
Author(s):  
Neela D. Thangada ◽  
Kershaw V. Patel ◽  
Bradley Peden ◽  
Vijay Agusala ◽  
Julia Kozlitina ◽  
...  
Keyword(s):  
Physical Activity ◽  
Sedentary Time ◽  
Vigorous Physical Activity ◽  
Structure And Function ◽  
Moderate Physical Activity ◽  
Cardiac Structure ◽  
Cardiac Structure And Function ◽  
Dallas Heart Study ◽  
And Function ◽  
Objectively Measured

Background Physical inactivity and low cardiorespiratory fitness (CRF) are associated with higher risk of heart failure. However, the independent contributions of objectively measured sedentary time, physical activity, and CRF toward left ventricular (LV) structure and function are not well established. Methods and Results We included 1368 participants from the DHS (Dallas Heart Study) (age, 49 years; 40% men) free of cardiovascular disease who had physical activity and sedentary time measured by accelerometer, CRF estimated from submaximal treadmill test, and cardiac magnetic resonance imaging performed using 3‐T magnetic resonance imaging. A series of linear regression models were constructed to evaluate the associations of sedentary time, moderate physical activity, vigorous physical activity, and CRF with LV parameters after adjustment for established cardiovascular risk factors. We observed a modest correlation between CRF levels and objectively measured moderate (correlation coefficient, 0.17; P <0.001) and vigorous physical activity (correlation coefficient, 0.25; P <0.001) levels. In contrast, sedentary time was not associated with CRF. In adjusted analysis, both vigorous physical activity and higher CRF were significantly associated with greater stroke volume, LV mass, LV end‐diastolic volume, and lower arterial elastance, independent of other confounders. Sedentary time and moderate physical activity levels were not associated with LV parameters. Conclusions Vigorous physical activity and CRF are significantly associated with cardiac structure and function parameters. Future studies are needed to determine if interventions aimed at improving CRF levels may favorably modify cardiac structure and function.

scholarly journals Differences in daily objective physical activity and sedentary time between women with self-reported fibromyalgia and controls: results from the Canadian Health Measures Survey

2018 ◽  
Author(s):  
Paquito Bernard ◽  
Gabriel Hains-Monfette ◽  
Sarah Atoui ◽  
Célia Kingsbury
Keyword(s):  
Physical Activity ◽  
Sedentary Time ◽  
Vigorous Physical Activity ◽  
Accelerometer Data ◽  
Light Physical Activity ◽  
Health Measures ◽  
Activity Promotion ◽  
Modifiable Factors ◽  
Canadian Health ◽  
Canadian Health Measures Survey

IntroductionPhysical activity and sedentary behaviors are important modifiable factors that influence health and quality of life in women with fibromyalgia. The purpose of this study was to compare objectively assessed physical activity and sedentary time in women self-reporting fibromyalgia with a control group. MethodData were drawn from the Canadian Health Measures Survey cycle 1, 2 and 3 conducted by Statistics Canada. We included women aged 18 to 79 years with complete accelerometer data. We performed one-way analyses of covariance (adjusted-for socio-demographic and health factors) to determine mean differences in physical activity and sedentary variables (minutes per day of moderate and vigorous physical activity, light physical activity, sedentary and daily steps) between women with and without fibromyalgia.ResultsIn total, 4132 participants were included. A cross-sectional weighted analysis indicated that 3,1% of participants self-reported a diagnosis of fibromyalgia. Participants with fibromyalgia spent less time than controls engaged in moderate and vigorous physical activity (M = 19.2 min/d (SE=0.7) vs M = 9.1 min/d (SE=1.2), p = 0.03, η2= 0.01). No significant differences were found for daily time spent in light physical activity, sedentary activities and number of steps.ConclusionWomen participants with self-reported fibromyalgia spent significantly less time in moderate and vigorous physical activity than control. Physical activity promotion interventions for women with self-reported fibromyalgia should, as a priority, target physical activities with moderate to vigorous intensity.

scholarly journals Socioeconomic and ethnic differences in children’s vigorous intensity physical activity: a cross-sectional analysis of the UK Millennium Cohort Study

BMJ Open ◽  
2019 ◽  
Vol 9 (5) ◽  
pp. e027627 ◽  
Author(s):  
Rebecca Love ◽  
Jean Adams ◽  
Andrew Atkin ◽  
Esther van Sluijs
Keyword(s):  
Physical Activity ◽  
Cohort Study ◽  
Socioeconomic Position ◽  
Maternal Education ◽  
Vigorous Physical Activity ◽  
Moderate Physical Activity ◽  
Accelerometer Data ◽  
Linear Regression Models ◽  
Cross Sectional ◽  
Vigorous Intensity

ObjectiveTo investigate if daily vigorous physical activity (VPA), adjusted for minutes of moderate physical activity (MPA) performed, differs by socioeconomic position or ethnicity in a large sample of UK children with objectively measured physical activity.DesignNationally representative prospective cohort study.SettingUK children born between 2000 and 2002.Participants5172 children aged 7–8 with valid accelerometer data for ≥10 hour on ≥3 days, including 1 weekend day.Main outcome measuresTime spent in VPA (>3841 counts per min).Explanatory measuresMaternal education, annual household Organisation for Economic Co-Operation and Development equivalised income, ethnicity.ResultsMultivariable linear regression models fitted to explore differences in average daily minutes of VPA (adjusted for MPA, mean accelerometer wear time, season of measurement, age and sex), revealed significantly higher amounts of VPA accumulated as a child’s socioeconomic position increased (highest vs lowest level of maternal education: β: 2.96, p: 0.00; annual household equivalised income: β: 0.58, p: 0.00, per £10 000 annual increase). Additionally, children from certain minority ethnicities (Bangladeshi and Pakistani: β: −3.34, p: 0.00; other ethnic groups: β:−2.27, p: 0.02) accrued less daily VPA compared with their white British counterparts.ConclusionsThe socioeconomic and ethnic patterning of vigorous activity observed in this study mirrors parallel inequalities in rates of childhood obesity. Given the stronger association of VPA with adiposity than of MPA, intensity specific differences may be contributing to widening inequalities in obesity. Accordingly, these findings suggest that the current global focus on overall moderate-to-vigorous intensity activity may mask important behavioural inequalities.

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