Data · collection
Does prolonged sun deprivation in Antarctic conditions cause irreversible bone loss?
Listed in NASA Earthdata CMR
Vitamin D deficiency is detrimental to the skeleton resulting in accelerated bone loss, and reductions in bone mineral density (BMD).
Description
The main source of vitamin D in healthy people is that which they produce in the skin when it is exposed to ultraviolet (UV) radiation eg. sunlight. During winter when there is less sunlight, less vitamin D is produced and bone loss increases.
This seasonal change to bone is reversed once the skin is exposed to sunlight again. The longer a person is not exposed to sunlight, the greater the detrimental effect on bones. It is not known if prolonged periods of sun deprivation will permanently effect bone.
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Studying healthy adults during their time in Antarctica, when UV exposure is negligible provides valuable information about the effect of prolonged sun deprivation on bone. Following the expeditioners up on their return to a temperate climate will reveal if the detriment to bone is transient or permanent. Findings from this study may have applications beyond expeditioners to include elderly in aged care and space travel.
Baseline blood samples (as at 2004-06-30): LocationNumber Macquarie Island14 Casey14 Davis20 Mawson16 3 month blood samples: Mawson15 6 month blood samples and diet records: Mawson17
Links
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Documentation and papers
- data.aad.gov.au /aadc/metadata/citation.cfm?entry_id=ASAC_2505 ↗
Citation reference for this metadata record and dataset
documentation · from NASA CMR
- Public information for ASAC project 2505 secure3.aad.gov.au/proms/public/projects/report_project_public.cfm?project_no=2505 ↗
project · from NASA CMR
Catalogue records · 2
- CMR record cmr.earthdata.nasa.gov/search/concepts/C1214306354-AU_AADC.html ↗
catalogue entry · from NASA CMR
- CMR UMM-JSON cmr.earthdata.nasa.gov/search/concepts/C1214306354-AU_AADC.umm_json ↗
metadata API · from NASA CMR
Topics
- Stated by source
- Environmental Health Factors · Not provided · Radiation Exposure
Provenance · 1 source records, 10 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| NASA Earthdata CMR | C1214306354-AU_AADC | 14 d ago | JSON v1 |
| Field | Assertion | Extractor | Evidence |
|---|---|---|---|
| access_level | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[measured_variable].gcmd:earth-science/human-dimensions/public-health/environmental-health-factors | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[measured_variable].gcmd:earth-science/human-dimensions/public-health/radiation-exposure | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[platform].gcmd_platform:not-provided | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| description | source · NASA CMR | connector:nasa_cmr@1.0.0 | /umm/Abstract |
| license_text | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| spatial | source · NASA CMR | connector:nasa_cmr@1.0.0 | /umm/SpatialExtent |
| temporal | source · NASA CMR | connector:nasa_cmr@1.0.0 | /umm/TemporalExtents |
| title | source · NASA CMR | connector:nasa_cmr@1.0.0 | /umm/EntryTitle |
| version_label | source · NASA CMR | connector:nasa_cmr@1.0.0 |