Validation of Static and Dynamic Activity Detection Using a Tri-Axial Accelerometer and Video

2012 ◽  
Author(s):  
Vipul Lugade ◽  
Emma Fortune ◽  
Melissa Morrow ◽  
Kenton Kaufman
Keyword(s):  
Physical Activity ◽  
Energy Expenditure ◽  
Postural Sway ◽  
Activity Monitoring ◽  
Metabolic Energy ◽  
Activity Levels ◽  
Activity Detection ◽  
Dynamic Activity ◽  
Physical Activity Levels ◽  
Metabolic Energy Expenditure

Recording body accelerations has been investigated previously to monitor health, metabolic energy expenditure, postural sway and falls [1]. Activity monitoring and the subsequent analysis of the accelerometry data have also proven useful in detecting physical activity levels among Parkinson’s [2] and osteoarthritis patients [3].

Caloric Intake and Energy Expenditures in India

2020 ◽  
Author(s):  
Shari Eli ◽  
Nicholas Li
Keyword(s):  
Physical Activity ◽  
Energy Expenditure ◽  
Total Energy ◽  
Caloric Intake ◽  
Total Energy Expenditure ◽  
Activity Levels ◽  
Significant Drop ◽  
Energy Expenditures ◽  
Food And Nutrition ◽  
Physical Activity Levels

Abstract Total energy expenditures for the Indian population between 1983 and 2012 are estimated to shed light on the debate concerning falling measured caloric intake during the period (A. Deaton and J. Drèze. 2009. “Food and Nutrition in India: Facts and Interpretations.” Economic and Political Weekly 44(7): 42–65). Anthropometric, time-use, and detailed employment surveys are used to estimate the separate components of total energy expenditure related to metabolism and physical activity levels. Despite a significant drop in adult physical activity levels, total energy expenditures are flat overall between 1983 and 2012. Rising metabolic requirements due to increases in weight dampened the effect of falling activity levels on total energy expenditure. In addition, the 10 percent decline in the population share of children in the period raised average total energy expenditures considerably as children have much lower metabolic requirements and activity levels than adults.

scholarly journals Energy balance and obesity: a UK perspective on the gluttonyv.sloth debate

2013 ◽  
Vol 26 (2) ◽  
pp. 89-109 ◽  
Author(s):  
D. Joe Millward
Keyword(s):  
Physical Activity ◽  
Energy Consumption ◽  
Energy Expenditure ◽  
Energy Supply ◽  
Activity Levels ◽  
Food Energy ◽  
Household Food ◽  
Diet And Exercise ◽  
Physical Activity Levels ◽  
The Uk

Obesity in the UK was assumed to have developed against a population decline in physical activity, with health messages focused on diet and exercise prevention strategies. Doubly-labelled water (DLW) studies of energy expenditure have indicated the alternative scenario that the increased obesity prevalence reflects excessive food energy intake with physical activity levels unchanged. This analysis is questionable, deriving in part from a weakness of the DLW methodology in identifying changing physical activity levels within populations of increasing body weight. This has resulted in an underestimation of the reduction in physical activity in the overweight and obese, as revealed by direct studies of such behaviour. Furthermore, a close examination of food energy supply, household food purchases and individual food energy consumption since 1955, in relation to likely estimates of current intakes indicated by simple modelling of predicted energy expenditure, identifies: (a) food energy supply as markedly overestimating energy intakes; (b) individual food energy consumption as markedly underestimating energy intakes; and (c) household food purchase data as the closest match to predicted current food energy intakes. Energy intakes indicated by this latter method have fallen by between 20 to 30 %, suggesting comparable falls in physical activity. Although unequivocal evidence for a matching UK trend in falling physical activity is limited, as is evidence that obesity follows reductions in physical activity, such a link has been recently suggested in a large prospective study in adolescents. Thus, for the UK, obesity has developed within a ‘move less–eat somewhat less but still too much’ scenario. A focus on both diet and exercise should remain the appropriate public health policy.

Physical Activity for Weight Loss in Children: Is There Any Compensatory Mechanism?

2014 ◽  
Vol 26 (2) ◽  
pp. 121-123 ◽  
Author(s):  
David Thivel ◽  
Pascale Duché
Keyword(s):  
Physical Activity ◽  
Weight Loss ◽  
Energy Expenditure ◽  
Overweight And Obesity ◽  
Compensatory Mechanism ◽  
Activity Levels ◽  
Compensatory Responses ◽  
Physical Activity Levels ◽  
Prevention And Treatment ◽  
And Control

Although physical activity is primarily considered for its effects on energy expenditure for prevention and treatment of both overweight and obesity, its role in the regulation and control of energy balance seems more complex. Not only does physical activity affect energy expenditure, it also leads to modifications in energy intake and appetite that have been identified in children and that should be considered for weight loss. It also appears that it may not systematically favor increased energy expenditure due to individual differences in compensatory responses. This brief paper summarizes the pediatric evidence regarding those potential compensatory responses to physical activity and suggests that these compensatory responses of increasing physical activity levels may depend on children’s adiposity status.

scholarly journals Accuracy of Self-Reported Physical Activity Levels in Obese Adolescents

2014 ◽  
Vol 2014 ◽  
pp. 1-6 ◽  
Author(s):  
Sarah A. Elliott ◽  
Kimberley A. Baxter ◽  
Peter S. W. Davies ◽  
Helen Truby
Keyword(s):  
Physical Activity ◽  
Energy Expenditure ◽  
Resting Energy Expenditure ◽  
Accurate Estimation ◽  
Accurate Information ◽  
Activity Levels ◽  
Doubly Labelled Water ◽  
Obese Adolescents ◽  
Individual Level ◽  
Physical Activity Levels

Introduction.Self-reported measures of habitual physical activity rely completely on the respondent’s ability to provide accurate information on their own physical activity behaviours. Our aim was to investigate if obese adolescents could accurately report their physical activity levels (PAL) using self-reported diaries.Methods.Total energy expenditure (TEE) was measured using doubly labelled water (DLW) and resting energy expenditure (REE) was measured via indirect calorimetry. Activity energy expenditure (AEE) and PAL values were derived from measured TEE and REE. Self-reported, four-day activity diaries were used to calculate daily MET values and averaged to give an estimated PAL value (ePAL).Results.Twenty-two obese adolescents, mean age13.2±1.8years, mean BMI31.3±4.6 kg/m2, completed the study. No significant differences between mean measured and estimated PAL values were observed (1.37±0.13versus1.40±0.34,P=0.74). Bland Altman analysis illustrated a significant relationship (r=-0.76,P<0.05) between the two methods; thus the bias was not consistent across a range of physical activity levels, with the more inactive overreporting their physical activity.Conclusion.At an individual level, obese adolescents are unlikely to be able to provide an accurate estimation of their own activity.

scholarly journals Higher energy expenditure but lower physical activity levels with increasing obesity

2012 ◽  
Vol 26 (S1) ◽  
Author(s):  
James P DeLany ◽  
John M Jakicic ◽  
David E Kelley ◽  
Kazanna C Hames ◽  
Bret H Goodpaster
Keyword(s):  
Physical Activity ◽  
Energy Expenditure ◽  
Activity Levels ◽  
Physical Activity Levels ◽  
Lower Physical Activity

scholarly journals Physical activity levels and energy expenditure of 9-year-old – 12-year-old overweight and obese children

2011 ◽  
Vol 16 (1) ◽  
Author(s):  
Chanelle Kemp ◽  
Anita E. Pienaar
Keyword(s):  
Physical Activity ◽  
Energy Expenditure ◽  
Primary Schools ◽  
Overweight And Obesity ◽  
Moderate Intensity ◽  
Activity Levels ◽  
Obese Children ◽  
Moderate Intensity Physical Activity ◽  
Physical Activity Levels ◽  
Intensity Physical Activity

The high occurrence of overweight and obesity amongst children is a disturbing health problem worldwide. Possible causes of increasing childhood obesity are inactivity and energy imbalances. The aim of this study was to analyse the total energy expenditure (TEE)and physical activity levels in 9-year-old – 12-year-old overweight and obese children during a weekday and a weekend day, as well as during a weekday morning and afternoon. Twenty-four 9-year-old – 12-year-old children (seven boys and 17 girls), of whom nine were overweight and 15 were obese, were selected from seven public primary schools for this study. Body mass index (BMI) cut-off points were used to distinguish between overweight and obese. Each participant wore an ACTICAL™ monitor to determine their physical activity levels and TEE. It was found that the TEE of the children did not differ between a week day and a weekend day, although the TEE of the week day afternoon differed significantly from that of the weekday morning. Unlike the overweight children, none of the obese children met the requirements of 60 minutes of moderate-intensity physical activity per day. Strategies should be found to increase the activity levels of overweight and, especially, obese children, specifically during the mornings and over weekends.OpsommingDie hoë voorkoms van oorgewig en obesiteit onder kinders is wêreldwyd ’n kommerwekkende gesondheidsprobleem. Fisieke onaktiwiteit en energiewanbalanse word as moontlike oorsake van die probleem beskou. Die doel van hierdie studie was om die totale energieverbruik (TEV) en fisieke-aktiwiteitsvlakke van 9-jarige – 12-jarige oorgewig- en obese kinders tydens ‘n totale weeksdag en naweekdag te ontleed, asook tydens die oggend en middag van ‘n weeksdag. Vier-en-twintig 9-jarige – 12-jarige kinders (sewe seuns en 17 dogters), waarvan nege oorgewig en 15 obees was, is uit sewe publieke laerskole vir die studie gekies. Afsnypunte volgens die liggaamsmassa-indeks (LMI) is gebruik om tussen oorgewig en obees te onderskei. Elke deelnemer het ‘n ACTICAL™ monitor gedra om hul fisieke-aktiwiteitsvlakke en TEV te bepaal. Die studie het getoon dat die TEV van die kinders op ’n weeksdag en naweekdag nie verskil het nie, alhoewel TEV tydens die middag van die weeksdag betekenisvol verskil het van die oggend s’n. Anders as die oorgewig kinders, het geen van die obese kinders aan die voorgestelde riglyn van 60 minute se matig intensiewe fisieke aktiwiteit per dag voldoen nie. Strategieë moet gevind word om die vlakke van aktiwiteit van oorgewig en veral obese kinders te verhoog, spesifiek gedurende die oggende en oor naweke.

scholarly journals S31 Energy expenditure and physical activity levels during an 8-week pulmonary rehabilitation programme

Thorax ◽  
2011 ◽  
Vol 66 (Suppl 4) ◽  
pp. A17-A17
Author(s):  
J. L. Canavan ◽  
K. A. Ingram ◽  
R. P. Fowler ◽  
A. L. Clark ◽  
P. Marns ◽  
...  
Keyword(s):  
Physical Activity ◽  
Energy Expenditure ◽  
Pulmonary Rehabilitation ◽  
Rehabilitation Programme ◽  
Activity Levels ◽  
Physical Activity Levels ◽  
Pulmonary Rehabilitation Programme
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