430 Objectively measured daily physical activity has a relation with left ventricular seize in young children

Background:Identifying periods of the day which are susceptible to varying levels of physical activity (PA) may help identify key times to intervene and potentially change preschool children’s PA behaviors. This study assessed variability of objectively measured moderate-to-vigorous physical activity (MVPA) during weekdays and weekend days among preschool children.Methods:One hundred and eighty-eight children (aged 3 to 5 years; 53.2% boys) from a northwest English city wore uni-axial accelerometers for 7 consecutive days.Results:Higher levels of MVPA were recorded in boys, particularly those who attended preschool for a half day. Children who attended preschool for a full day engaged in 11.1 minutes less MVPA than children who attended for a half day. After-school hours were characterized by a decrease in activity for all groups. Patterns of activity during the weekend were smoother with less variability.Conclusion:This study identified discrete segments of the week, specifically afterschool and during the weekend, when preschoolers engage in low levels of PA. Higher levels of MVPA among children who attended preschool for less time each day suggests that the structured preschool environment is related to decreased activity. Consequently, there is a need for interventions in young children to focus on school and home environments.

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

Journal of Physical Activity and Health ◽

10.1123/jpah.6.4.419 ◽

2009 ◽

Vol 6 (4) ◽

pp. 419-425 ◽

Cited By ~ 28

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.

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Health-related aspects of objectively measured daily physical activity in children

Clinical Physiology and Functional Imaging ◽

10.1111/j.1475-097x.2008.00788.x ◽

2008 ◽

Vol 28 (3) ◽

pp. 133-144 ◽

Cited By ~ 72

Author(s):

Magnus Dencker ◽

Lars Bo Andersen

Keyword(s):

Physical Activity ◽

Daily Physical Activity ◽

Health Related ◽

Objectively Measured

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Daily physical activity in young children and their parents: A descriptive study

Paediatrics & Child Health ◽

10.1093/pch/17.3.e20 ◽

2012 ◽

Vol 17 (3) ◽

pp. e20-e24 ◽

Cited By ~ 9

Author(s):

Marja Cantell ◽

Susan G Crawford ◽

Deborah Dewey

Keyword(s):

Physical Activity ◽

Young Children ◽

Descriptive Study ◽

Daily Physical Activity

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Seasonality in Physical Activity and Sedentary Behavior in Young Children

Pediatric Exercise Science ◽

10.1123/pes.17.1.31 ◽

2005 ◽

Vol 17 (1) ◽

pp. 31-40 ◽

Cited By ~ 76

Author(s):

Abigail Fisher ◽

John J. Reilly ◽

Colette Montgomery ◽

Louise A. Kelly ◽

Avril Williamson ◽

...

Keyword(s):

Physical Activity ◽

Seasonal Variation ◽

Young Children ◽

Sedentary Behavior ◽

Sedentary Time ◽

Low Intensity ◽

Significant Seasonal Variation ◽

Limited Degree ◽

Vigorous Intensity ◽

Objectively Measured

This study examined whether there was a significant seasonal variation in objectively measured habitual physical activity and sedentary behavior in young children. Participants were children who attend nursery in Glasgow, Scotland, and measurements were taken using uniaxial accelerometry over 3 to 6 days. There were small but significant seasonal associations with physical activity and sedentary behavior (ANOVA: p < .001 in both cases). Total physical activity (accelerometry cpm) was significantly lower in spring than in summer, fall, and winter. We also found slight but significant seasonal variations in time spent in low-intensity activity and in moderate-to-vigorous-intensity activity. Sedentary time was significantly lower in summer vs. spring and in fall vs. spring. The present study suggests that seasonality plays only a limited role in physical activity and sedentary behavior in young children in our setting. Single measures of these variables should be adequate for research purposes in the absence of marked seasonal variability. In our sample and setting, the limited degree of seasonality precluded identification of major seasonal barriers to and opportunities for physical activity.

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