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Clinical Trial Details — Status: Recruiting

Administrative data

NCT number NCT01934270
Other study ID # MeirMc094-13CTIL
Secondary ID
Status Recruiting
Phase N/A
First received
Last updated
Start date May 2014
Est. completion date March 1, 2020

Study information

Verified date October 2019
Source Meir Medical Center
Contact n/a
Is FDA regulated No
Health authority
Study type Interventional

Clinical Trial Summary

Proper growth in children is a complex process regulated by a combination of genetic, nutritional, environmental, hormonal, and others. Growth hormone (GH) is the main hormone regulating the growth from childhood to adulthood. Despite great progress in the field, with the development of recombinant GH for the treatment of growth hormone deficiency (GHD), there is still no reliable method for testing GHD. Physical exertion is one of the significant physiologic stimuli for GH secretion, and it is reliable test for identification of GHD. It is not in use in the clinics because of its complexity. Recently GH secretion following short anaerobic exercise in young adults was tested and also demonstrated significant growth hormone secretion

In contrast to adult children's exercise is characterized by an anaerobic nature. There is no data about secretion of growth hormone in response to anaerobic exercise in children.

Purpose of the experiment:

The purpose of this study is to evaluate the secretion of growth hormone in response to anaerobic exercise in children.


Description:

100 children aged 6-16 years, followed at the pediatric endocrinology clinic for growth assessment or obesity. Assessment of their growth hormone axis will be evaluate in parallel according to the currently accepted pharmacological GH testing as accepted and also following anaerobic physical test.

After explanation to the patient and his parent and obtaining an informed consent, the children will be instructed to pedal at maximum speed for 15 seconds x 10 sprints (1 minute of recovery between the sprints) against a resistance adjusted according to their body mass index.

The test will perform in similarity to GH provocative protocols by mean that they will be performed in the morning after a night's sleep and overnight fasting. The patients will be remained fasting during the test.

They will be asked not to exercise a day before the test. Thirty minutes before the test, Venflon will be inserted and the child will receive an explanation and rest until the beginning of the test. blood GH, IGF-1, cortisol will be taken at the beginning of exercise (time 0), at the end of exercise, after 30 minutes, 45 minutes and 60 minutes is customary according to criteria set pharmacological inventory growth hormone.

The test results will be compared to pharmacological testing of the child if available.


Recruitment information / eligibility

Status Recruiting
Enrollment 100
Est. completion date March 1, 2020
Est. primary completion date December 30, 2019
Accepts healthy volunteers Accepts Healthy Volunteers
Gender All
Age group 6 Years to 16 Years
Eligibility Inclusion Criteria:

- Children evaluated for short stature

- Normal weight \ overweight \ obesity

Exclusion Criteria:

- Known GH deficiency

Study Design


Intervention

Other:
Anaerobic Test
To evaluate the secretion of growth hormone in response to anaerobic exercise in children.

Locations

Country Name City State
Israel Meir Medical Center Kfar Saba

Sponsors (1)

Lead Sponsor Collaborator
Meir Medical Center

Country where clinical trial is conducted

Israel, 

Outcome

Type Measure Description Time frame Safety issue
Primary Growth Hormone Release GH will be measured at the beginning of exercise (time 0), and the change in GH level will be assessed at the end of exercise (30 seconds), after 10 minutes, 30 minutes and 60 minutes
Secondary IGF-1 and Cortisol Release IGF-1, Cortisol will be taken at the beginning of exercise (time 0), at the end of exercise (30 seconds), after 10 minutes, 30 minutes and 60 minutes
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