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Improving Bone Health in Adolescent Girls: The Youth Osteoporosis and Understanding Total Health (YOUTH) Study

This study has been completed.
Information provided by:
Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD) Identifier:
First received: August 25, 2003
Last updated: October 28, 2014
Last verified: October 2014
Osteoporosis affects nearly half of all American women over age 50. During the teenage years, girls can increase bone growth to decrease their risk of osteoporosis later in life. This study will test whether girls can change their food intake and physical activity patterns in ways that will increase their bone growth during the mid-teen years.

Condition Intervention Phase
Osteoporosis Behavioral: Diet with increased fruits, vegetables, and calcium Behavioral: Increased high impact activity and resistance training Phase 1

Study Type: Interventional
Study Design: Allocation: Randomized
Intervention Model: Factorial Assignment
Masking: None (Open Label)
Primary Purpose: Prevention
Official Title: Lifestyle Changes to Increase Bone Density in Teen Girls

Resource links provided by NLM:

Further study details as provided by Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD):

Primary Outcome Measures:
  • Total Body Bone Mineral Density (TBBMD) [ Time Frame: Baseline, 1 year, and 2 years ]
    Changes in TBBMD as measured by DEXA at baseline, 1 year, and 2 years

Secondary Outcome Measures:
  • Serum osteocalcin, alkaline phosphatase, and urinary n-telopeptide [ Time Frame: Baseline, 1 year, and 2 years ]
    Biologic measures of bone metabolism

  • Plasma carotenoids and red cell folate [ Time Frame: Baseline, 1 year, and 2 years ]
    Biologic measures of dietary change

Estimated Enrollment: 228
Study Start Date: August 2000
Study Completion Date: September 2003
Primary Completion Date: September 2003 (Final data collection date for primary outcome measure)
Detailed Description:

Osteoporosis-related fractures incur an annual cost in the United States of more than $8 billion. Peak bone mass is achieved in the late teens and early 20s. An important component of a lifelong osteoporosis prevention strategy is to maximize bone mineral content during the teen years and establish lifestyle patterns that will help maintain bone mineral content through menopause. This trial will test the efficacy of a comprehensive lifestyle intervention to build bone and prevent bone loss among adolescent women 14 to 16 years of age.

Participants in this study will be randomized to either an intervention group or an attention control group. The intervention program includes a physical activity component involving high impact and spinal motion activities and a diet component rich in fruits, vegetables, and calcium. Participants will take part in group and individual meetings and activities and receive coaching telephone calls. Participants will be assessed at study entry and two annual follow-up visits. Primary outcome measures include objective measures (serum folate and carotenoids urinary sodium, lean body mass, accelerometer measure of physical activity) and self-reports.


Ages Eligible for Study:   14 Years to 16 Years   (Child)
Sexes Eligible for Study:   Female
Accepts Healthy Volunteers:   Yes

Inclusion Criteria

  • High school freshman or sophomore
  • Body mass index (BMI) from 16 through 23
  • Member of Kaiser Permanente Northwest Health Plan
  • Parent or guardian willing to participate

Exclusion Criteria

  • Co-morbidity requiring a specific diet
  • Medication which contraindicates consuming a high-fiber diet
  • Life-threatening disease or other condition that would interfere with study participation
  • Current or past medically or self-diagnosed eating disorder
  • Current behaviors consistent with eating-related disorder
  • Pregnancy
  • Diagnosis of psychological disorder or difficulty within the past year
  Contacts and Locations
Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below. For general information, see Learn About Clinical Studies.

Please refer to this study by its identifier: NCT00067600

United States, Oregon
Kaiser Permanente Center for Health Research
Portland, Oregon, United States, 97227
Sponsors and Collaborators
Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD)
Principal Investigator: Lynn L DeBar, PhD, MPH Kaiser Permanente
  More Information

Publications automatically indexed to this study by Identifier (NCT Number): Identifier: NCT00067600     History of Changes
Other Study ID Numbers: R01HD037744 ( U.S. NIH Grant/Contract )
Study First Received: August 25, 2003
Last Updated: October 28, 2014

Additional relevant MeSH terms:
Bone Diseases, Metabolic
Bone Diseases
Musculoskeletal Diseases processed this record on September 21, 2017