Sitting on a therapy ball or standing may be a passive means of increasing energy expenditure throughout the workday. The purpose of this study was to determine the energy expenditure and liking of performing clerical work in various postures. Subjects included 24 men and women employed in sedentary clerical occupations. Energy expenditure was measured while word processing in three standardized postures; sitting in an office chair, sitting on a therapy ball, and standing. Adults ranked their comfort, fatigue, and liking of each posture and were asked to perform their choice of 20 min of additional clerical work in one of the postures. Energy expenditure was 4.1 kcal/h greater (p <or= 0.05) while performing clerical work while sitting on a therapy ball and standing than while sitting in an office chair. There was no difference in energy expenditure between the therapy ball and standing postures (p >or= 0.48). Subjects also liked sitting on a therapy ball as much as sitting in an office chair and liked sitting on a therapy ball more than standing (p <or= 0.05). More subjects chose to perform additional clerical work while seated on a therapy ball than while standing (p = 0.03). In conclusion, sitting on a therapy ball or standing rather than sitting in an office chair while performing clerical work increases passive energy expenditure.
"Further studies are warranted before recommendations for the prolonged used of an exercise ball at work are brought forward. The absence of studies conducted in children also limit extrapolation of these findings to this population as well as to active individuals since only sedentary individuals were selected  or the physical activity level of participants was not specified . The principal limit to consider pertains to methodological perspective. "
[Show abstract][Hide abstract] ABSTRACT: Overweight (OW) and obesity (OB) are often associated with low levels of physical activity. Physical activity is recommended to reduce excess body weight, prevent body weight regain, and decrease the subsequent risks of developing metabolic and orthopedic conditions. However, the impact of OW and OB on motor function and daily living activities must be taken into account. OW and OB are associated with musculoskeletal structure changes, decreased mobility, modification of the gait pattern, and changes in the absolute and relative energy expenditures for a given activity. While changes in the gait pattern have been reported at the ankle, knee, and hip, modifications at the knee level might be the most challenging for articular integrity. This review of the literature combines concepts and aims to provide insights into the prescription of physical activity for this population. Topics covered include the repercussions of OW and OB on biomechanical and physiological responses associated with the musculoskeletal system and daily physical activity. Special attention is given to the effect of OW and OB in youth during postural (standing) and various locomotor (walking, running, and cycling) activities.
Journal of obesity 01/2011; 2011(3):650230. DOI:10.1155/2011/650230
"Resting EE significantly less in the lean than in the obese (r = 0.78%, p < 0.001) Significant linear relationship between walking speed and EE (r 2 = 0.99) Using OPSD associated with an absolute increase en EE above resting by 300 ± 106 kcal/h (p < 0.001) and above sitting in an office chair by 289 ± 102 kcal/h (p < 0.001) Beers et al., 2008 (12) "
[Show abstract][Hide abstract] ABSTRACT: To identify methods used to assess physical activity and sedentary behaviour at the workplace and review the validity and reliability of these measures.
Databases were searched for relevant published articles including MEDLINE, SPORT Discus, ProQuest and Google Scholar. Keywords used were physical-activity, workplace, sedentary-behaviour, measurement and questionnaire. Studies included were original, written in English, published between 1990 and 2009, and focused on validated physical activity and sedentary behaviour measures at work. Eleven papers were identified in which three used criterion standards, three objective measures, and five subjective measures.
The most common method of data collection was through self-report, surveys or questionnaires. Physical activity measured with motion sensors, ranged from 4,422 to 10,334 steps/day (pedometers) and sedentary time ranged from 1.8 to 6 hours/day (h/d) (accelerometers). Self-report measures provided information relevant to the perception of physical activity at work (∼ 0.5 h/d), sitting time (> 3 h/d) and calculated energy expenditure (< 800 kcal/d).
Physical activity levels at work were low while sedentary behaviour was high. This was largely a function of occupation (white-collar vs. blue-collar). None of the studies assessed validity or reliability of measures used however, instruments as assessed by others showed moderate to strong validity and reliability values.
Work 01/2011; 40(4):345-57. DOI:10.3233/WOR-2011-1246 · 0.52 Impact Factor
[Show abstract][Hide abstract] ABSTRACT: To test the hypothesis that both children and adults would expend more calories and move more while playing activity-promoting video games compared with sedentary video games.
In this single-group study, 22 healthy children (12 +/- 2 years; 11 male, 11 female) and 20 adults (34 +/- 11 years; 10 male, 10 female) were recruited. Energy expenditure and physical activity were measured while participants were resting, standing, watching television seated, sitting and playing a traditional sedentary video game, and while playing an activity-promoting video game (Nintendo Wii Boxing). Physical activity was measured with accelerometers, and energy expenditure was measured with an indirect calorimeter.
Energy expenditure was significantly greater than all other activities when children or adults played Nintendo Wii (mean increase over resting, 189 +/- 63 kcal/hr, P < .001, and 148 +/- 71 kcal/hr, P < .001, respectively). When examining movement with accelerometry, children moved significantly more than adults (55 +/- 5 arbitrary acceleration units and 23 +/- 2 arbitrary acceleration units, respectively, P < .001) while playing Nintendo Wii.
Activity-promoting video games have the potential to increase movement and energy expenditure in children and adults.
The Journal of pediatrics 04/2009; 154(6):819-23. DOI:10.1016/j.jpeds.2009.01.009 · 3.79 Impact Factor
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