Outcome
Type |
Measure |
Description |
Time frame |
Safety issue |
Other |
Demographics and physical home environment moderators |
A demographic survey, including sex, race/ethnicity, and exergaming experience, will be collected at baseline. Child's physical home environment information will be measured by a validated Home Environment Inventory. In detail, 33 items will be related to children's PA and sedentary behavior, with nearly half being assessed by direct observation (e.g., size of back yard and lawn area, number and positioning of TV and presence of other types of small screen entertainment) while the rest by parental report (e.g., family rule about TV use). |
Through study completion, an average of 1 year. |
|
Other |
Motor skills competence covariate |
The Test of Gross Motor Development-2 will be used to assess preschoolers' MSC. The instrument is a qualitative measure to assess the gross motor skills of children aged 3-10 years. The 5 skills tested are run, hop, jump, kick and throw. Children execute each skill twice. To evaluate skill performance, qualitative performance criteria are scored, with 1 indicating its presence and 0 its absence. If a skill is assessed using three performance criteria, the raw scores can therefore vary between 0-6. The highest raw total subtest score for the locomotor as well as the object control skills. Higher scores mean a better outcome. |
0, 3, 12 months (follow-up) |
|
Other |
Perceived competence covariate |
To examine children's perceived competence, the validated Pictorial Scale of Perceived Competence and Social Acceptance (PSPCSA)106 for preschool children will be used. In detail, the subscale of perceived physical competence will be assessed. A sample of the survey is provided in Appendix 1. Enjoyment. A modified Physical Activity Enjoyment Scale will be used to assess preschool children's enjoyment toward physical activity. This scale will use similar pictorial scale as the PSPCSA and has 4 levels for the children to choose for each item. It has shown acceptable validity for use with the preschool children. The scales will be individually administered at baseline in the PI's lab to protect the privacy of the child. Higher scores mean a better outcome. |
0, 3, 12 months (follow-up) |
|
Primary |
Change in physical activity levels |
Preschoolers' 5-day daily PA levels will be assessed using ActiGraph Link GT9X accelerometers (Pensacola, FL) at each testing cycle. The Link is lightweight and resembles a watch, and is a valid and reliable measure of PA among young children in free-living settings. Children will be instructed to wear the accelerometers on the non-dominant wrist at all times with the exception of time spent swimming for 3 weekday and 2 weekend days. In this project, activity counts will be set at 1-second epochs. Counts will be interpreted using empirically based cut points that define different PA intensities for preschoolers. Children's daily average minutes engaged in PA (MVPA and light PA) and sedentary behavior will be used as the outcome variables. Acceptable inclusion criteria for PA data will be recording of an average of 10 hours of accelerometer data per day. Compliance with wearing monitors will be facilitated according to Trost recommendations. |
0, 3, 12 months (follow-up) |
|
Secondary |
Change in health-related fitness |
Cardiovascular Fitness. Preschool children's cardiovascular fitness will be assessed by a modified YMCA 3-minute step test. Children will step up and down for three minutes on a 6-inch riser to a metronome beep set at 96 beats per minute (each beep corresponding to one movement of the leg with 4 beeps representing one up-down cycle). Children's heart rate will be assessed immediately before and after the conclusion of the test by the researchers via palpation of the carotid/radial artery with the child's one-minute heart rate. Children will be encouraged to do their best while performing the tests in the PAEL lab. |
0, 3, 12 months (follow-up) |
|
Secondary |
Change in percent body fat |
Children's body fat percentage (bioelectrical impedance analysis) will be assessed by a TanitaBC-558 Ironman Body Composition Monitor digit weight scale. |
0, 3, 12 months (follow-up) |
|
Secondary |
Change in cognition |
The computer-administered NIH Toolbox will be used to measure children's attention, inhibitory control, and cognitive flexibility. These are individually-administered tasks that require an environment that is reasonably quiet and distraction-free. |
0, 3, 12 months (follow-up) |
|
Secondary |
Change in screen time |
TV allowance devices will be attached to every TV and computer in each home to track children's sedentary screen time. Exergame consoles have functions to record intervention children's playing time and thus track their active screen time. In addition, a validated screen time survey will be administered to the parents. It includes parent report of child hours spent watching TV, videos/DVD, playing video/computer games/ exergaming, surfing internet, etc. for below periods (wake-up until noon, noon until 6 pm, 6 pm until bedtime). Children's total and passive screen time will be used as the outcome variables. |
0, 3, 12 months (follow-up) |
|
Secondary |
Change in bodyweight |
Children's bodyweight (in kilograms) will be assessed by aTanitaBC-558 Ironman Body Composition Monitor digit weight scale. |
0, 3, 12 months (follow-up) |
|
Secondary |
Change in body mass index (BMI) |
Multiple measurements (height [cm] and weight [kg]) will be aggregated to arrive at one reported value of BMI (i.e., weight and height will be combined to report BMI in kg/m^2). To allow for growth, the BMI calculated from height and weight will be standardized using the CDC LMS method which yields BMI Z-scores for age and sex. |
0, 3, 12 months (follow-up) |
|