560 OBJECTIVELY MEASURED DAILY PHYSICAL ACTIVITY RELATED TO BODY FAT IN YOUNG CHILDREN

Background:The purpose of this study was to assess the relationship between intensity of physical activity (PA) and body composition in 343 young women.Methods:Physical activity was objectively measured using accelerometers worn for 7 days in women 17 to 25 years. Body composition was assessed using the BOD POD.Results:Young women who spent less than 30 minutes a week performing vigorous PA had significantly higher body fat percentages than women who performed more than 30 minutes of vigorous PA per week (F = 4.54, P = .0113). Young women who spent less than 30 minutes per day in moderate to vigorous PA (MVPA) had significantly higher body fat percentages than those who obtained more than 30 minutes per day of MVPA (F = 7.47, P = .0066). Accumulating more than 90 minutes of MVPA per day was associated with the lowest percent body fat. For every 10 minutes spent in MVPA per day, the odds of having a body fat percentage above 32% decreased by 29% (P = .0002).Conclusion:Vigorous PA and MVPA are associated with lower adiposity. Young women should be encouraged to accumulate at least 30 minutes of MVPA per day, however getting more than 90 minutes a day is predictive of even lower levels of adiposity.

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Patterns of Objectively Measured Moderate-to-Vigorous Physical Activity in Preschool Children

Journal of Physical Activity and Health ◽

10.1123/jpah.2012-0163 ◽

2014 ◽

Vol 11 (6) ◽

pp. 1233-1238 ◽

Cited By ~ 22

Author(s):

Mareesa O’Dwyer ◽

Stuart J. Fairclough ◽

Nicola Diane Ridgers ◽

Zoe Rebecca Knowles ◽

Lawrence Foweather ◽

...

Keyword(s):

Physical Activity ◽

Preschool Children ◽

Young Children ◽

Vigorous Physical Activity ◽

After School ◽

Home Environments ◽

Low Levels ◽

Objectively Measured ◽

Full Day

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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Daily physical activity pattern related to total body fat and abdominal fat in younger children

Journal of Science and Medicine in Sport ◽

10.1016/j.jsams.2012.11.393 ◽

2012 ◽

Vol 15 ◽

pp. S161

Author(s):

M. Dencker ◽

O. Thorsson ◽

M. Karlsson ◽

C. Lindén ◽

P. Wollmer ◽

...

Keyword(s):

Physical Activity ◽

Body Fat ◽

Activity Pattern ◽

Abdominal Fat ◽

Daily Physical Activity ◽

Physical Activity Pattern ◽

Total Body Fat ◽

Total Body

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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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