Lower leg fluid displacement during a simulated space shuttle launch
Reductions in leg fluid volume of about 1/per leg or 10% of total leg volume have been reported during space flight. We wanted to test the hypothesis that a significant portion of these changes occur during the prelaunch and launch periods. Fluid volume changes in the lower leg were estimated in six...
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| Veröffentlicht in: | European journal of applied physiology 1998-06, Vol.78 (1), p.65-68 |
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| container_title | European journal of applied physiology |
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| creator | LINNARSSON, D TEDNER, B LINDBORG, B |
| description | Reductions in leg fluid volume of about 1/per leg or 10% of total leg volume have been reported during space flight. We wanted to test the hypothesis that a significant portion of these changes occur during the prelaunch and launch periods. Fluid volume changes in the lower leg were estimated in six men during a simulated Space Shuttle launch. After 2 h in the launch position, i.e. supine with elevated legs, the subjects were exposed to 500 s of two to three times increased g force in the anterio-posterior direction in a human centrifuge. During the prelaunch period one lower leg lost a mean of (113 SD 53) ml of fluid and there was little or no additional fluid reduction during the period of increased g force. This compares with the 178-ml reduction of lower leg volume that has been reported during the 1st day of Shuttle missions. We concluded that a significant portion of the fluid reduction observed in the lower leg during the early stages of space flight had already occurred before the launch. |
| doi_str_mv | 10.1007/s004210050388 |
| format | Article |
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We wanted to test the hypothesis that a significant portion of these changes occur during the prelaunch and launch periods. Fluid volume changes in the lower leg were estimated in six men during a simulated Space Shuttle launch. After 2 h in the launch position, i.e. supine with elevated legs, the subjects were exposed to 500 s of two to three times increased g force in the anterio-posterior direction in a human centrifuge. During the prelaunch period one lower leg lost a mean of (113 SD 53) ml of fluid and there was little or no additional fluid reduction during the period of increased g force. This compares with the 178-ml reduction of lower leg volume that has been reported during the 1st day of Shuttle missions. 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We wanted to test the hypothesis that a significant portion of these changes occur during the prelaunch and launch periods. Fluid volume changes in the lower leg were estimated in six men during a simulated Space Shuttle launch. After 2 h in the launch position, i.e. supine with elevated legs, the subjects were exposed to 500 s of two to three times increased g force in the anterio-posterior direction in a human centrifuge. During the prelaunch period one lower leg lost a mean of (113 SD 53) ml of fluid and there was little or no additional fluid reduction during the period of increased g force. This compares with the 178-ml reduction of lower leg volume that has been reported during the 1st day of Shuttle missions. We concluded that a significant portion of the fluid reduction observed in the lower leg during the early stages of space flight had already occurred before the launch.</description><subject>Adult</subject><subject>Applied physiology</subject><subject>Biological and medical sciences</subject><subject>Blood Pressure</subject><subject>Body Fluids - physiology</subject><subject>Centrifugation</subject><subject>Electrocardiography</subject><subject>Fundamental and applied biological sciences. Psychology</subject><subject>Heart Rate</subject><subject>Hemodynamics. Rheology</subject><subject>Human physiology applied to population studies and life conditions. Human ecophysiology</subject><subject>Humans</subject><subject>Leg</subject><subject>Male</subject><subject>Medical sciences</subject><subject>Middle Aged</subject><subject>Models, Biological</subject><subject>Posture</subject><subject>Space Flight</subject><subject>Space life sciences</subject><subject>Transports. Aerospace. Diving. Altitude</subject><subject>Vertebrates: cardiovascular system</subject><subject>Weightlessness</subject><issn>0301-5548</issn><issn>1439-6319</issn><issn>1432-1025</issn><issn>1439-6327</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1998</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNpVkDtPwzAUhS0EKqUwMiJ5QGwBO37EHhFvqRILzJFrX7cB50Ecq-LfE9SoiOke3fPpGw5C55RcU0KKm0gIz8ckCFPqAM0pZ3lGSS4O0ZwwQjMhuDpGJzF-EJITzYoZmmkpCRVqju6X7RZ6HGCNfUiVw66KXTAWamgG7FJfNWtscKzqFMwADsduLHHcpGEIgINJjd2coiNvQoSz6S7Q--PD291ztnx9erm7XWaWCTFkViufK84Kyg3z4IW2DqiQjEsw2jtupfJCKmuFcazQ0njhKBQgtZLMC7ZA2c4bt9ClVdn1VW3677I1VTm9PscEJWecjd4FutrxXd9-JYhDWVfRQgimgTbFstBaE6GKP7Ht2xh78Hs1JeXvyuW_lUf-YhKnVQ1uT0-zjv3l1JtoTfC9aWwV91iey0ISwX4AS5aEYg</recordid><startdate>19980601</startdate><enddate>19980601</enddate><creator>LINNARSSON, D</creator><creator>TEDNER, B</creator><creator>LINDBORG, B</creator><general>Springer</general><scope>IQODW</scope><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7X8</scope><scope>ADTPV</scope><scope>AOWAS</scope></search><sort><creationdate>19980601</creationdate><title>Lower leg fluid displacement during a simulated space shuttle launch</title><author>LINNARSSON, D ; TEDNER, B ; LINDBORG, B</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c355t-c98f2843714a3fef59cde156346ea9fd4c68f568cc5ad3796af5d1e7e69863f53</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1998</creationdate><topic>Adult</topic><topic>Applied physiology</topic><topic>Biological and medical sciences</topic><topic>Blood Pressure</topic><topic>Body Fluids - physiology</topic><topic>Centrifugation</topic><topic>Electrocardiography</topic><topic>Fundamental and applied biological sciences. Psychology</topic><topic>Heart Rate</topic><topic>Hemodynamics. Rheology</topic><topic>Human physiology applied to population studies and life conditions. Human ecophysiology</topic><topic>Humans</topic><topic>Leg</topic><topic>Male</topic><topic>Medical sciences</topic><topic>Middle Aged</topic><topic>Models, Biological</topic><topic>Posture</topic><topic>Space Flight</topic><topic>Space life sciences</topic><topic>Transports. Aerospace. Diving. Altitude</topic><topic>Vertebrates: cardiovascular system</topic><topic>Weightlessness</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>LINNARSSON, D</creatorcontrib><creatorcontrib>TEDNER, B</creatorcontrib><creatorcontrib>LINDBORG, B</creatorcontrib><collection>Pascal-Francis</collection><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>MEDLINE - Academic</collection><collection>SwePub</collection><collection>SwePub Articles</collection><jtitle>European journal of applied physiology</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>LINNARSSON, D</au><au>TEDNER, B</au><au>LINDBORG, B</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Lower leg fluid displacement during a simulated space shuttle launch</atitle><jtitle>European journal of applied physiology</jtitle><addtitle>Eur J Appl Physiol Occup Physiol</addtitle><date>1998-06-01</date><risdate>1998</risdate><volume>78</volume><issue>1</issue><spage>65</spage><epage>68</epage><pages>65-68</pages><issn>0301-5548</issn><issn>1439-6319</issn><eissn>1432-1025</eissn><eissn>1439-6327</eissn><coden>EJAPCK</coden><abstract>Reductions in leg fluid volume of about 1/per leg or 10% of total leg volume have been reported during space flight. We wanted to test the hypothesis that a significant portion of these changes occur during the prelaunch and launch periods. Fluid volume changes in the lower leg were estimated in six men during a simulated Space Shuttle launch. After 2 h in the launch position, i.e. supine with elevated legs, the subjects were exposed to 500 s of two to three times increased g force in the anterio-posterior direction in a human centrifuge. During the prelaunch period one lower leg lost a mean of (113 SD 53) ml of fluid and there was little or no additional fluid reduction during the period of increased g force. This compares with the 178-ml reduction of lower leg volume that has been reported during the 1st day of Shuttle missions. We concluded that a significant portion of the fluid reduction observed in the lower leg during the early stages of space flight had already occurred before the launch.</abstract><cop>Berlin</cop><pub>Springer</pub><pmid>9660158</pmid><doi>10.1007/s004210050388</doi><tpages>4</tpages></addata></record> |
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| source | MEDLINE; Springer Nature - Complete Springer Journals |
| subjects | Adult Applied physiology Biological and medical sciences Blood Pressure Body Fluids - physiology Centrifugation Electrocardiography Fundamental and applied biological sciences. Psychology Heart Rate Hemodynamics. Rheology Human physiology applied to population studies and life conditions. Human ecophysiology Humans Leg Male Medical sciences Middle Aged Models, Biological Posture Space Flight Space life sciences Transports. Aerospace. Diving. Altitude Vertebrates: cardiovascular system Weightlessness |
| title | Lower leg fluid displacement during a simulated space shuttle launch |
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