Table 1.
Characteristics of 5th Grade Boys and Girls by Period of Daya Physical Activity
| Total Sample (n=994)b | Analysis Sample (N=693) | Male (N=311) | Female (N=382) | |
|---|---|---|---|---|
|
| ||||
| Age (years) | 10.6 (0.5) | 10.6 (0.5) | 10.6 (0.5) | 10.6 (0.5) |
|
| ||||
| BMI (kg/m2) | 21.2 (4.9) | 21.1 (5.0) | 20.8 (4.9) | 21.4 (5.0) |
|
| ||||
| BMI z-score | 0.89 (1.1) | 0.89 (1.1) | 0.87 (1.1) | 0.91 (1.0) |
|
| ||||
| Parental Education (> High school) | 67.6% | 68.0% | 70.7% | 65.7% |
|
| ||||
| Race/Ethnicity | ||||
| Black | 35.2% | 34.0% | 37.6% | 31.1% |
| Hispanic | 11.3% | 10.6% | 10.9% | 10.3% |
| Other | 17.1% | 16.5% | 15.8% | 17.1% |
| White | 36.4% | 38.9% | 35.7% | 41.6% |
|
| ||||
| Total MVPA (min/hr) | 2.9 (1.7) | 2.9 (1.8) | 3.8 (2.1) | 2.2 (1.1)* |
|
| ||||
| After school MVPA (min/hr) | 3.5 (2.8) | 3.4 (2.9) | 4.6 (3.4) c | 2.5 (1.9)*d |
|
| ||||
| Evening MVPA (min/hr) | 3.3 (3.1) | 3.3 (3.1) | 4.4 (3.7)e | 2.5 (2.0)*f |
|
| ||||
| MET-weighted MVPA (min/hr) | 15.9 (10.9) | 16.0 (11.5) | 20.9 (13.9) | 12.1 (7.0)* |
|
| ||||
| MET-weighted After school MVPA (min/hr) | 20.2 (20.1) | 20.1 (20.7) | 27.2 (25.7)c | 14.4 (13.2)*d |
|
| ||||
| MET-weighted Evening MVPA (min/hr) | 20.6 (23.0) | 20.9 (23.5) | 27.6 (28.9)e | 15.5 (16.3)*f |
Statistics are means (SD) unless denoted as a percentage.
Gender differences were significant with p<0.05.
Total day MVPA was based on all accelerometer data; after school MVPA was based on data for the time period from the end of the school day (2:25p.m.) until 6:00p.m. on weekdays; evening MVPA was based on data for the time period from 6:00pm until 10:00p.m.
994 children in the original sample of 1083 study participants (92%) provided PA data; of those 693 (70%) provided adequate data on independent variables to be included in this analysis.
The mean for afterschool MVPA among males was based upon the 302 males who met criteria for accelerometer wear time during the after school time period.
The mean for afterschool MVPA among females was based upon the 378 females who met criteria for accelerometer wear time during the after school time period.
The mean for evening MVPA among males was based upon the 273 males who met criteria for accelerometer wear time during the evening time period.
The mean for evening MVPA among females was based upon the 338 females who met criteria for accelerometer wear time during the evening time period.