Child growth and development
Conditions
Interventions
Sponsors
Eligibility
Inclusion criteria
Inclusion criteria: 1. Healthy children aged 8-11 years old who engaged in outdoor activities and had similar dietary intake, and whose levels of vitamin D, calcium (a trace element), and growth hormone were all within the normal range. 2. The guardians agreed to participate in the study and signed the informed consent form.
Exclusion criteria
Exclusion criteria: 1. Children with any known immunodeficiency diseases and those with diseases affecting growth and development, such as metabolic disorders, hypothyroidism, growth hormone dysfunction, renal function impairment, etc.; 2. Those currently taking drugs known to affect bone mineral metabolism (such as hormones, diuretics or antiepileptic drugs); 3. Those who have participated in other clinical trials.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Height;Serum 25- (OH) D;Serum trace elements;bone mineral density; | — |
Secondary
| Measure | Time frame |
|---|---|
| weight; | — |
Countries
China
Contacts
The Fourth Affiliated Hospital of China Medical University