Effects of Jumping on Growing Bones

ClinicalTrials.gov ID: NCT00000405

Public ClinicalTrials.gov record NCT00000405. Field values are reproduced from the official study page; the official ClinicalTrials.gov record remains the source of truth for eligibility, enrollment, and contact information.

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Official title

The Effects of Jumping on Growing Bones

Brief summary

Reproduced verbatim from the official ClinicalTrials.gov record. Not medical advice.

In this study we will investigate the effects of a high-impact exercise program involving jumping on bone mass (the amount of bone) of the hip and backbone in the growing skeleton. We will also look at the effects of gradually stopping the jumping program on bone mass in the growing skeleton. A high-impact exercise program may build more bone during childhood, while the skeleton is still growing. This may help prevent broken bones due to loss of bone mass later in life. We will recruit 200 children aged 5-10 to participate in the study. For 6 months we will train the children in either a jumping or stretching program. We will then gradually reduce the amount of exercise over 6 months. We will measure bone mass in the hip and backbone at the start of the study, after jumping, and 6 months after the jumping program is stopped. We will compare the results in the jumping and stretching groups.

Study identification

NCT ID: NCT00000405
Recruitment status: Completed
Study type: Interventional
Phase: Phase 2
Lead sponsor: Oregon State University; Other
Enrollment: 200 participants

Conditions and interventions

Conditions

Osteoporosis

Interventions

Exercise intervention Procedure

Procedure

Eligibility (public fields only)

Age range: 5 Years to 10 Years
Sex: All
Healthy volunteers: Accepts healthy volunteers

This page does not interpret eligibility. Detailed inclusion and exclusion criteria are on the official ClinicalTrials.gov record.

Study timeline

Start date: Aug 31, 1998
Primary completion: May 31, 2008
Completion: Oct 31, 2008
Last update posted: Jun 8, 2016

1998 – 2008

United States locations

U.S. sites: 1
U.S. states: 1
U.S. cities: 1

Facility	City	State	ZIP	Site status
Oregon State University	Corvallis	Oregon	97331	—

Site contact phone numbers, emails, and investigator names are intentionally not displayed here. Open the official ClinicalTrials.gov record for site contact information.

About this trial record page

What this page shows: Public field values for ClinicalTrials.gov record NCT00000405, including study identification, conditions, interventions, eligibility (age, sex, healthy volunteer), timeline, and U.S. site list.
What this page does not do: No medical advice, eligibility judgments, treatment recommendations, study quality scoring, or AI-generated medical summaries. No site contact phone numbers, emails, or investigator names.
Where the data comes from: Sourced from the official ClinicalTrials.gov public API. The official record is the source of truth.
Last refresh: Last update posted Jun 8, 2016 · Synced Sep 10, 2026

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The complete protocol, eligibility criteria, and contact information for NCT00000405 live on ClinicalTrials.gov.

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