Child growth and development
Conditions
Interventions
Control group:none
Vitamin D supplement group:none
Vitamin D and calcium supplement group:none
Sponsors
The Fourth Affiliated Hospital of China Medical University
Eligibility
Sex/Gender
All
Age
2 Years to 12 Years
Inclusion criteria
Inclusion criteria: 1. Healthy children aged 2-12 years with similar factors such as outdoor activities and dietary intake, and normal levels of vitamin D and trace element calcium. 2. Guardians agreed to participate in the study and signed an informed consent form.
Exclusion criteria
Exclusion criteria: 1. Children with any known immunodeficiency and diseases affecting growth and development, such as metabolic diseases, hypothyroidism, growth hormone dysfunction, renal impairment, etc.; 2. Children taking medications known to affect bone mineral metabolism (e.g., hormones, diuretics, or antiepileptic drugs); 3. Children have participated in other clinical trials.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Height;Serum 25- (OH) D;Serum trace elements;bone mineral density, BMD;weight and BMI index; | — |
Countries
China
Contacts
Public ContactYouxi Zhang
The Fourth Affiliated Hospital of China Medical University
Outcome results
None listed