The validity of capillary blood sampling in the determinationof human growth hormone concentration during exercise in men

2.50
Hdl Handle:
http://hdl.handle.net/2436/14993
Title:
The validity of capillary blood sampling in the determinationof human growth hormone concentration during exercise in men
Authors:
Godfrey, R.J.; Whyte, Gregory P.; McCarthy, J.; Nevill, Alan M.; Head, Andrew
Abstract:
Background: Studies measuring human growth hormone (hGH) in blood during exercise have mainly used venous sampling. The invasive nature of this procedure makes evaluation of hGH impossible in various exercise environments. Objective: To determine whether capillary sampling could offer an alternative sampling method. Methods: Capillary and venous blood samples were collected for determination of hGH at the end of each exercise stage during an incremental exercise test in 16 male club level competitive cyclists (mean (SD) age 30.8 (8.0) years, body mass 72.2 (7.1) kg, body fat 12.9 (3.5)%, peak oxygen consumption 4.18 (0.46) l?min21). Linear regression, from a plot of venous v capillary blood hGH concentration, showed a correlation coefficient of r = 0.986 (p,0.001). When geometric means and log transformations were used, a coefficient of variation of 14.2% was demonstrated between venous and capillary flow for hGH concentration. The mean ratio limits of agreement were 0.62 (1.72)—that is, 95% of the ratios were contained between 0.36 and 1.07, with a mean of 0.62. Conclusions: Capillary blood sampling is an acceptable alternative to venous sampling for determining hGH concentration during rest and exercise. Sample sites should not be used interchangeably: one site should be chosen and its use standardised.
Citation:
British Journal of Sports Medicine, 38 (e27)
Publisher:
BMJ publishing
Issue Date:
2004
URI:
http://hdl.handle.net/2436/14993
DOI:
10.1136/bjsm.2003.008714
Additional Links:
http://bjsm.bmj.com/cgi/content/abstract/38/5/e27
Submitted date:
2007-12
Type:
Article
Language:
en
ISSN:
03063674
Appears in Collections:
Sport, Exercise and Health Research Group; Exercise and Health; Learning and Teaching in Sport, Exercise and Performance

Full metadata record

DC FieldValue Language
dc.contributor.authorGodfrey, R.J.-
dc.contributor.authorWhyte, Gregory P.-
dc.contributor.authorMcCarthy, J.-
dc.contributor.authorNevill, Alan M.-
dc.contributor.authorHead, Andrew-
dc.date.accessioned2007-12-05T09:56:12Z-
dc.date.available2007-12-05T09:56:12Z-
dc.date.issued2004-
dc.date.submitted2007-12-
dc.identifier.citationBritish Journal of Sports Medicine, 38 (e27)en
dc.identifier.issn03063674-
dc.identifier.doi10.1136/bjsm.2003.008714-
dc.identifier.urihttp://hdl.handle.net/2436/14993-
dc.description.abstractBackground: Studies measuring human growth hormone (hGH) in blood during exercise have mainly used venous sampling. The invasive nature of this procedure makes evaluation of hGH impossible in various exercise environments. Objective: To determine whether capillary sampling could offer an alternative sampling method. Methods: Capillary and venous blood samples were collected for determination of hGH at the end of each exercise stage during an incremental exercise test in 16 male club level competitive cyclists (mean (SD) age 30.8 (8.0) years, body mass 72.2 (7.1) kg, body fat 12.9 (3.5)%, peak oxygen consumption 4.18 (0.46) l?min21). Linear regression, from a plot of venous v capillary blood hGH concentration, showed a correlation coefficient of r = 0.986 (p,0.001). When geometric means and log transformations were used, a coefficient of variation of 14.2% was demonstrated between venous and capillary flow for hGH concentration. The mean ratio limits of agreement were 0.62 (1.72)—that is, 95% of the ratios were contained between 0.36 and 1.07, with a mean of 0.62. Conclusions: Capillary blood sampling is an acceptable alternative to venous sampling for determining hGH concentration during rest and exercise. Sample sites should not be used interchangeably: one site should be chosen and its use standardised.en
dc.language.isoenen
dc.publisherBMJ publishingen
dc.relation.urlhttp://bjsm.bmj.com/cgi/content/abstract/38/5/e27en
dc.subjectCapillary samplingen
dc.subjectGrowth hormone measurementen
dc.subjectExerciseen
dc.subjectSample site-
dc.subjectExercise-
dc.titleThe validity of capillary blood sampling in the determinationof human growth hormone concentration during exercise in menen
dc.typeArticleen
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