Bone Development, Dietary Adequacy
Conditions
Keywords
Adolescents, Bone mass, Calcium, Perceived milk intolerance, lactose maldigestion
Brief summary
School based educational intervention to educate on bone health among Hispanic, Asian or non-Hispanic white girls between 10-13 years with end points of knowledge gained, calcium intake and bone density in . The hypothesis was that the educational program would increase knowledge, improve dairy food and calcium consumption and enhance bone health in this population. A secondary hypothesis was that lactose maldigestion would be an impediment to improved dairy food consumption.
Detailed description
A targeted behavioral intervention to improve calcium intake and bone mass was conducted at middle schools in 6 states. The primary outcomes of bone mass and dietary calcium were assessed among Asian, Hispanic, or non-Hispanic white girls between 10 -13 y. Lactose maldigestion (LM) was determined by a breath hydrogen test (BHT). Perceived milk intolerance (PMI) and calcium intake were assessed by questionnaires and bone mineral content (BMC) was determined by dual energy X-ray absorptiometry (DXA). Data from 473 girls were used in a multiple linear regression to examine the impact of the intervention while accounting for PMI and LM and adjusting for covariates.
Interventions
BEHAVIORALAdequate Calcium Today
A school-randomized behavioral intervention study called the Adequate Calcium Today (ACT) project was conducted in sixth grade classrooms located in six states (Arizona, California, Hawaii, Indiana, Nevada, and Ohio).
Sponsors
University of Hawaii
Arizona State University
University of California, Davis
University of Nevada, Las Vegas
Ohio State University
Southern Illinois University
Purdue University
Study design
Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
PREVENTION
Masking
NONE
Eligibility
Sex/Gender
FEMALE
Age
10 Years to 13 Years
Healthy volunteers
Yes
Inclusion criteria
Middle schools within one-hour driving time of one of the designated DXA measurement sites were eligible to participate in ACT if their student population had a higher proportion of Asian or Hispanic students than the respective state's average. - Girls recruited for evaluation measures were limited to those being at least 75% Asian, Hispanic or non-Hispanic White based on the race/ethnicity of their biological parents.
Exclusion criteria
\-
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Change in Bone Mineral Content | 18 months | Baseline, 12 month and 18 month bone mineral content measured |
| Dietary Calcium | 18 months | Dietary Calcium intake assessed by food frequency questionnaire |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Lactose maldigestion | Baseline | Measured by breath hydrogen testing |
Other
| Measure | Time frame | Description |
|---|---|---|
| Perceived lactose intolerance | Baseline | Measured by questionnaire |
Countries
United States
Outcome results
None listed