Osteoporosis
Conditions
Brief summary
The aims of this study were to investigate how intake of tailor-made salmon affected bone biomarkers, nutritional status, as well as body composition and bone mineral density. The 122 healthy postmenopausal women included in this 12 weeks intervention study were randomized into four groups: three salmon groups (with three different vitamin D3/vitamin K1 combinations) and one tablet group (vitamin D and Calcium).
Detailed description
Suboptimal vitamin D status is common among humans, and might have a negative impact on bone health. Fatty fish, including Atlantic salmon, is an important dietary vitamin D source. However, due to a considerable change in fish feed composition, the contribution of vitamin D from salmon fillet has been reduced. The aims were to investigate how intake of tailor-made salmon affected bone biomarkers, nutritional status (vitamin D, omega-3), as well as body composition and bone mineral density (BMD). The 122 healthy postmenopausal women (median 55 years) included in this 12 weeks intervention study were randomized into four groups: three salmon groups (150 grams/two times/week) and one tablet group (800IU vitamin D and 1000 mg Calcium/day). The salmon groups also received calcium supplements (1000 mg/d). The salmon had three different vitamin D3/vitamin K1 combinations: high D3 + high K1, low D3 + high K1, or high D3 + low K1.
Interventions
DIETARY_SUPPLEMENTTailor-made salmon with high levels of vitamin D3 and K1
The aims were to investigate how intake of tailor-made salmon with high levels of vitamin D3 and K1 affected bone biomarkers, nutritional status (vitamin D, omega-3), as well as body composition and bone mineral density.
DIETARY_SUPPLEMENTTailor-made salmon with low levels of vitamin D3 and high K1
The aims were to investigate how intake of tailor-made salmon with low levels of vitamin D3 and high K1 affected bone biomarkers, nutritional status (vitamin D, omega-3), as well as body composition and bone mineral density.
DIETARY_SUPPLEMENTTailor-made salmon with high levels of vitamin D3 and low K1
The aims were to investigate how intake of tailor-made salmon with high levels of vitamin D3 and low K1 affected bone biomarkers, nutritional status (vitamin D, omega-3), as well as body composition and bone mineral density.
DIETARY_SUPPLEMENTSupplement with vitamin D and Calcium
The aims were to investigate how supplement with vitamin D and Calcium affected bone biomarkers, nutritional status (vitamin D, omega-3), as well as body composition and bone mineral density.
Sponsors
Haukeland University Hospital
National Institute of Nutrition and Seafood Research, Norway
Study design
Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
PREVENTION
Masking
NONE
Eligibility
Sex/Gender
FEMALE
Age
50 Years to 64 Years
Healthy volunteers
Yes
Inclusion criteria
* Postmenopausal women * Caucasian ethnicity * Age range 50-65 years * Having postmenopausal age of at least one year
Exclusion criteria
* Osteoporotic fractures * Medical treatment for osteoporosis * Warfarin treatment * Creatinine above or below normal range * Hypervitaminosis D * Malabsorption syndrome * Inflammatory bowel disease * Inflammatory rheumatic diseases * Women who had planned to go away on holiday during the intervention could not participate
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Deoxypyridinoline/creatinine | 3 months | Urinary (mmol/l) |
| Bone-specific alkaline phosphatase | 3 months | Serum (µg/l) |
| Osteocalcin | 3 months | Serum (ng/ml) |
| Undercarboxylated osteocalcin (GLU) | 3 months | Serum (ng/ml) |
| Carboxylated osteocalcine (GLA) | 3 months | Serum (ng/ml) |
| GLU/GLA-ratio | 3 months | Ratio of undercarboxylated osteocalcin and carboxylated osteocalcine |
| N-telopeptides/creatinine | 3 months | Urinary (mmol/l) |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Eicosapentaenoic acids | 3 months | Fatty acids composition of total red blood cells |
| Docosahexaenoic acids | 3 months | Fatty acids composition of total red blood cells |
| Omega-3 index | 3 months | The content of Eicosapentaenoic acids and Docosahexaenoic acids in red blood cell membranes expressed as percent of total fatty acids. |
| Body composition | 3 months | Total body soft tissue composition (fat mass and lean mass) measurements were performed using dual-energy X-ray absorptiometry (DXA) on a stationary fan beam densitometer. |
| Bone mineral density | 3 months | The total body bone mineral density (BMD) measurements were performed using dual-energy X-ray absorptiometry (DXA) on a stationary fan beam densitometer. |
| 25-hyroxyvitamin D | 3 months | Serum 25(OH)D (nmol/L) |
Countries
Norway
Outcome results
None listed