Osteoporosis Musculoskeletal Diseases Osteoporosis without pathological fracture
Conditions
Interventions
Sponsors
Eligibility
Inclusion criteria
Inclusion criteria: 1. Less than 19 weeks gestation at first assessment (based on last menstrual period [LMP] and dating scan) 2. Serum 25(OH)-vitamin D concentration is 25-100 nmol/l at nuchal fold/ dating scan (10 to 19 weeks gestation) 3. Aged over 18 years 4. Singleton pregnancy 5. Aiming to give birth at local hospital
Exclusion criteria
Exclusion criteria: 1. Known metabolic bone disease 2. Current medication likely to interfere with intrauterine growth (corticosteroids, anticonvulsants, parathyroid hormone [PTH], bisphosphonates) 3. Foetal physical anomalies on the 12 week scan 4. Inability to provide informed consent or comply with trial protocol 5. History of renal stones, hyperparathyroidism, hypercalcuria 6. Measured hypercalacemia (>2.75 mmol/l) 7. A diagnosis of cancer in the last 10 years 8. Cod liver oil of vitamin supplements containing vitamin D >200 iu per day 9. In-vitro fertilisation treatment
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Neonatal whole body bone area, bone mineral content and bone mineral density assessed by dual energy x-ray absorptiometry (DXA) within 10 days of birth. | — |
Secondary
| Measure | Time frame |
|---|---|
| Current secondary outcome measures as of 14/06/2023: 1. Neonatal and childhood anthropometry and body composition (weight, length and skinfold thickness measurements), assessed within 48 hours of birth 2. Women's attitude to pregnancy vitamin D supplementation (qualitative study; assessed in main study only). Methodology and timepoints of assessment not yet defined as of 03/03/2008 3. Childhood bone mass at 4 years 4. Childhood bone mass, bone microarchitecture and grip strength at age 6-7 years 5. Offspring anthropometry and musculoskeletal health measured using a DXA scan, High-resolution peripheral quantitative computed tomography (HR-pQCT), grip strength, jumping mechanography and biochemical parameters (including metabolomics, 25(OH)D, bone turnover markers) at age 11-14 years Previous secondary outcome measures: 1. Neonatal and childhood anthropometry and body composition (weight, length and skinfold thickness measurements), assessed within 48 hours of birth 2. Women's attitude to pregnancy vitamin D supplementation (qualitative study; assessed in main study only). Methodology and timepoints of assessment not yet defined as of 03/03/2008 3. Childhood bone mass at 4 years | — |
Countries
England, United Kingdom