Examination of the association between a child’s health behavior and access to healthy living at home and their HR, BMI, flexibility and strength measures in 2nd and 3rd graders Stephanie Birkenstock, Adam Engel, Katie Lorenzi, Josh Merrick, Kalina Myszkowski, Grace Price, Julie Waldie, Ira Gorman School of Physical Therapy, Regis University, Denver, CO INTRODUCTION Over the past 20 years, the prevalence of children who are overweight has become an epidemic, increasing by 50% in the United States.1, 2 This trend has proven to put children, with increased Body Mass Index (BMI), at serious risk for developing negative or adverse health implications across the lifespan including: type II diabetes, numerous cardiovascular complications, and early mortality rates. The three major levels that we believe contribute to this epidemic are the individual factors, the physical environment (i.e., school and home) and the social/cultural environment. This said, it has been noted that increased physical activity cannot only reduce children’s BMI, but reduce the numerous corollary health conditions associated with high BMI. It is further evident that performance gains in the areas of strength, power, speed, endurance, coordination, and agility have been associated with increased physical activity in children.
RESULTS
METHODS
DISCUSSION • Cohort of overall healthy 2nd and 3rd graders with only 3 subjects falling into the at risk or overweight category
Subjects: Subjects included second and third grade students at The Odyssey School, a DPS charter school that uses dynamic expeditionary learning to foster each child's unique potential and spirit of adventure. A total of 54 students (32 males) from two separate classes, participated in this study.
• Percent BMI decreased significantly but can be attributed to maturation of the subjects • Pre/post-test analysis of the subject’s attitudes demonstrated a statistically significant positive trend towards increased physical activity and better eating habits
PreTest Survey
Pre-Test
EDUCATIONAL PIECE
Shuttle run
Heart Health Education
HR/HT/WT
Nutritional Reflection
Curl up
Importance of Physical Activity
Shoulder Flex
Pro-section of human, cow and sheep hearts/lungs
Sit and Reach Vertical Jump
October 2007
* Indicates p <.05
PostTest Shuttle run HR/HT/WT Curl up Shoulder Flex
PostTest Survey
CLINICAL RELEVANCE •Physical therapists have a role in health education within the community
Sit and reach Vertical Jump
•Beginning health and wellness education at a young age could have beneficial effects on subjects’ attitudes towards a healthy lifestyle
April 2008
Procedures: • We worked in collaboration with the faculty at Odyssey to enrich the student’s learning experience on various health-related topics
•Future studies should consider… • Larger sample size, different age groups, more diverse SES, longer period for follow-up, and/or more active intervention • Analysis of covariates as stated above and control for other possible confounders • Clustering of tests to more effectively determine fitness level of subjects
• Distributed initial survey that was completed at home with parents included validated questions regarding physical activity levels, attitudes about health, nutrition, and environment
Purpose: To examine the association between a child’s health behavior and access to healthy living at home and their HR, BMI, flexibility, and strength measures. Additionally, to determine if an educational-based intervention for second and third graders would result in improved attitudes towards exercise, physiological measures, and physical performance. As a result, we hope to further identify appropriate interventions for battling the epidemic of childhood overweight as well as contribute to the evidence detailing the effectiveness of school-based intervention programs.
• Small sample size and skewed distribution of the outcome variables prevented the finding of significant regression models
• Performance tests and measures administered to the children including: shuttle run, vertical jump, curl-up, sit and reach, push ups, and shoulder flexion • Educational segments included: • Small group discussions about nutrition and physical activity • Pro-section observation of human, cow and sheep hearts and lungs • Instruction on self monitoring HR
Percentile BMI 8 7 6 5 4 3 2 1 0 >5
5--10
11--20
21-30
31-40
41-50
51-60
61-70
71-80
81-84
>85
Percentile BMI
• Data analysis conducted: • Descriptive statistics to define demographics • Paired t-test to determine if significant differences pre- post-test existed • Linear Regression models to determine if certain behaviors or attitudes predicted the various outcome variables
2
Post Test Data Regression Analysis with r Values Percent BMI Shuttle Run Curl Ups Vertical Jump Performance Measures 0.131 0.454* 0.328* 0.311*
Acknowledgements :
Nutrition Multimedia Usage Health Attitudes *significant to p<.05
References :
0.07 0.193 0.088
0.077 0.016 0.197*
0.127 0.107 0.144
0.169 0.079 0.137
We would like to thank the 2nd and 3rd graders of Mr. Andy and Ms. Kathi’s classes, Amy Hammerich, PT, DPT, and Ira Gorman, PT, MSPH. • •
Snethen JA, Broome ME. Weight, exercise, and health: children's perceptions. Clin Nurs Res. May 2007;16(2):138-152. Center for disease control and prevention: BMI. May 2007; http://www.cdc.gov/nccdphp/dnpa/bmi/childrens_BMI/about_childrens_BMI.htm. Accessed July 15, 2007.