Physical Activity, Cardiorespiratory Fitness
Conditions
Keywords
Childhood Physical Inactivity, Childhood Obesity
Brief summary
The aim of this study is to examine the effects of a kindergarten-based, parent-involved intervention during the upper kindergarten year (K3) on physical activity and physical fitness in preschool children.
Detailed description
This study is a two-arm cluster randomized controlled trial. Kindergartens will be randomly allocated to two groups: the usual care group and the intervention group. The usual care group will continue with their usual curriculum, which includes 30 minutes of daily physical activity stipulated by the Hong Kong SAR Government's Education Bureau. The intervention group will receive an additional 2.5 hours of physical activity per week in addition to the stipulated 30 minutes of daily physical activity. Outcome measures will be examined at baseline, 10 months (post-intervention), and 16 months (follow-up).
Interventions
OTHERUsual Care Control
30 minutes of physical activity on each school day.
BEHAVIORALPhysical Activity Enhanced Curriculum
Additional 2.5 hours of physical activity per week in addition to the stipulated 30 minutes of daily physical activity.
Sponsors
Hong Kong Baptist University
Chinese University of Hong Kong
Education University of Hong Kong
The Hong Kong Polytechnic University
Sun Yat-sen University
Georgia State University
Physical Fitness Association of Hong Kong, China
The University of Hong Kong
Study design
Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
PREVENTION
Masking
SINGLE (Outcomes Assessor)
Eligibility
Sex/Gender
ALL
Age
5 Years to 6 Years
Healthy volunteers
Yes
Inclusion criteria
1. Children aged 5-6 years (limited number of children may be between 4-5 and 6-7 years) 2. Able to communicate in Chinese 3. Able to participate in physical activity in a standard kindergarten setting
Exclusion criteria
1. Inherent or serious disease limiting participation in physical activity (e.g., congenital heart disease, pediatric cancer, Down syndrome). 2. Diagnosed mental illness impairing daily behavior and performance (e.g., anxiety disorder, depression, attention deficit hyperactivity disorder, psychotic disorders, autism spectrum disorder). 3. Physical disability (e.g., physical handicap, assistive device to walk). 4. Visual or hearing impairment. 5. Cognitive deficit or intellectual disability that requires special care and educational needs (e.g., handicapped children with learning difficulties).
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Change in Physical Activity | Baseline and 10 months | Physical activity will be assessed using an actigraph device with a three-axis accelerometer. |
| Change in Cardiorespiratory Fitness | Baseline and 10 months | Cardiorespiratory fitness will be assessed using the 20-meter shuttle run test. |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Change in Muscular Strength | Baseline, 10 months, and 16 months | Muscular strength will be assessed using a handgrip dynamometer. |
| Change in Flexibility | Baseline, 10 months, and 16 months | Flexibility will be assessed using the sit-and-reach test. |
| Change in Agility | Baseline, 10 months, and 16 months | Agility will be assessed using a 4 x 10-meter shuttle run test. |
| Change in Balance Ability | Baseline, 10 months, and 16 months | Balance ability will be assessed by the number of successful steps performed on a balance beam. |
| Change in Muscle Power | Baseline, 10 months, and 16 months | Muscle power will be assessed using a vertical jump and a stationary long jump test. |
| Change in Body Mass Index | Baseline, 10 months, and 16 months | Weight and height will be assessed using a calibrated electronic digital weighing scale and stadiometer respectively. |
| Change in Waist Circumference | Baseline, 10 months, and 16 months | Waist circumference will be assessed using an inelastic measuring tape to the nearest 0.1cm. |
| Change in Physical Activity | Baseline and 16 months | Physical activity will be assessed using an actigraph device with a three-axis accelerometer. |
| Change in Fat-Free Mass | Baseline, 10 months, and 16 months | Fat-free mass will be assessed using a bioelectrical impedance-based multi-frequency segmental body composition analyzer (MC780, Tanita, Japan). |
| Change in Sedentary Behavior and Screen Time | Baseline, 10 months, and 16 months | Sedentary behavior and screen time will be assessed using a 7-day activities logbook and accelerometer data. |
| Change in Treatment Self-Regulation Questionnaire Score | Baseline, 10 months, and 16 months | Treatment Self-Regulation Questionnaire (TSRQ) will be used to assess the children's autonomous motivation and beliefs on active healthy lifestyles. The items in TSRQ will be answered on a 3-point Likert scale with a higher score corresponding to greater autonomous motivation. |
| Change in Early Development Instrument | Baseline, 10 months, and 16 months | Early Development Instrument (EDI) will be used to assess the children's general well-being. |
| Change in Theory of Planned Behavior Scale Score | Baseline, 10 months, and 16 months | Theory of Planned Behavior Scale (TPBS) will be used to assess the children's social cognitive beliefs of health and physical activity behavior. The items in TPBS will be answered on a 3-point Likert scale with a higher score corresponding to a greater willingness to engage in the mentioned behaviors. |
| Change in Kiddy-KINDL | Baseline, 10 months, and 16 months | Kiddy-KINDL will be used to assess the health-related quality of life in children. |
| Change in Body Fat | Baseline, 10 months, and 16 months | Body fat will be assessed using a bioelectrical impedance-based multi-frequency segmental body composition analyzer (MC780, Tanita, Japan). |
| Change in Cardiorespiratory Fitness | Baseline and 16 months | Cardiorespiratory fitness will be assessed using the 20-meter shuttle run test. |
Countries
Hong Kong
Contacts
Primary ContactParco M Siu, PhD
Outcome results
None listed