Glucose and free fatty acid utilization during prolonged exercise in prepubertal boys in relation to catecholamine responses
Ten prepubertal boys performed 60-min cycle exercise at about 60% of their maximal oxygen uptake as previously measured. To measure packed cell volume, plasma glucose, free fatty acids (FFA), glycerol and catecholamines, blood samples were drawn at rest using a heparinized catheter and at the 15th,...
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| Veröffentlicht in: | European Journal of Applied Physiology and Occupational Physiology 1992-01, Vol.65 (1), p.66-72 |
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| container_title | European Journal of Applied Physiology and Occupational Physiology |
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| creator | DELAMARCHE, P MONNIER GRATAS-DELAMARCHE, A KOUBI, H. E MAYET, M. H FAVIER, R |
| description | Ten prepubertal boys performed 60-min cycle exercise at about 60% of their maximal oxygen uptake as previously measured. To measure packed cell volume, plasma glucose, free fatty acids (FFA), glycerol and catecholamines, blood samples were drawn at rest using a heparinized catheter and at the 15th, 30th and 60th min of the exercise and after 30 min of recovery. At rest, the blood glucose concentrations were at the lowest values for normal. Exercise induced a small decrease of blood glucose which was combined with an abrupt increase of the noradrenaline concentration during the first 15 min. The FFA and glycerol concentrations increased throughout the exercise linearly with that of adrenaline. Compared to adults, the FFA uptake expressed per minute and per litre of oxygen uptake was greater in children. These results suggested that it is difficult for children to maintain a constant blood glucose concentration and that prolonged exercise provided a real stimulus to hypoglycaemia. An immediate and large increase in noradrenaline concentration during exercise and a greater utilization of FFA was probably used by children to prevent hypoglycaemia. |
| doi_str_mv | 10.1007/BF01466276 |
| format | Article |
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Psychology ; Glycerol - blood ; Hematocrit ; Humans ; Intermediate and energetic metabolism ; Lactates - blood ; Lactic Acid ; Male ; Metabolisms and neurohumoral controls ; Norepinephrine - blood ; Norepinephrine - metabolism ; Physical Exertion - physiology ; Puberty - metabolism ; Puberty - physiology ; Vertebrates: anatomy and physiology, studies on body, several organs or systems</subject><ispartof>European Journal of Applied Physiology and Occupational Physiology, 1992-01, Vol.65 (1), p.66-72</ispartof><rights>1993 INIST-CNRS</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c342t-47932fe180a547c06bb00774d6d4f38d1e06fe63898c66ecee074e227d3ecbbf3</citedby><cites>FETCH-LOGICAL-c342t-47932fe180a547c06bb00774d6d4f38d1e06fe63898c66ecee074e227d3ecbbf3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,780,784,27924,27925</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=4460863$$DView record in Pascal Francis$$Hfree_for_read</backlink><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/1505542$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>DELAMARCHE, P</creatorcontrib><creatorcontrib>MONNIER</creatorcontrib><creatorcontrib>GRATAS-DELAMARCHE, A</creatorcontrib><creatorcontrib>KOUBI, H. E</creatorcontrib><creatorcontrib>MAYET, M. H</creatorcontrib><creatorcontrib>FAVIER, R</creatorcontrib><title>Glucose and free fatty acid utilization during prolonged exercise in prepubertal boys in relation to catecholamine responses</title><title>European Journal of Applied Physiology and Occupational Physiology</title><addtitle>Eur J Appl Physiol Occup Physiol</addtitle><description>Ten prepubertal boys performed 60-min cycle exercise at about 60% of their maximal oxygen uptake as previously measured. To measure packed cell volume, plasma glucose, free fatty acids (FFA), glycerol and catecholamines, blood samples were drawn at rest using a heparinized catheter and at the 15th, 30th and 60th min of the exercise and after 30 min of recovery. At rest, the blood glucose concentrations were at the lowest values for normal. Exercise induced a small decrease of blood glucose which was combined with an abrupt increase of the noradrenaline concentration during the first 15 min. The FFA and glycerol concentrations increased throughout the exercise linearly with that of adrenaline. Compared to adults, the FFA uptake expressed per minute and per litre of oxygen uptake was greater in children. These results suggested that it is difficult for children to maintain a constant blood glucose concentration and that prolonged exercise provided a real stimulus to hypoglycaemia. An immediate and large increase in noradrenaline concentration during exercise and a greater utilization of FFA was probably used by children to prevent hypoglycaemia.</description><subject>Biological and medical sciences</subject><subject>Blood Glucose - metabolism</subject><subject>Child</subject><subject>Child, Preschool</subject><subject>Epinephrine - blood</subject><subject>Epinephrine - metabolism</subject><subject>Exercise Test</subject><subject>Fatty Acids, Nonesterified - metabolism</subject><subject>Fundamental and applied biological sciences. Psychology</subject><subject>Glycerol - blood</subject><subject>Hematocrit</subject><subject>Humans</subject><subject>Intermediate and energetic metabolism</subject><subject>Lactates - blood</subject><subject>Lactic Acid</subject><subject>Male</subject><subject>Metabolisms and neurohumoral controls</subject><subject>Norepinephrine - blood</subject><subject>Norepinephrine - metabolism</subject><subject>Physical Exertion - physiology</subject><subject>Puberty - metabolism</subject><subject>Puberty - physiology</subject><subject>Vertebrates: anatomy and physiology, studies on body, several organs or systems</subject><issn>0301-5548</issn><issn>1439-6319</issn><issn>1432-1025</issn><issn>1439-6327</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1992</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNqFkc1rFTEUxYMo9bW6cS9kIS6EqfmaJLO0xVah4Kauh0xyUyN5yTPJgK_4xzflPdqlqwvn_O5HchB6R8k5JUR9vrgiVEjJlHyBNlRwNlDCxpdoQzihwzgK_Rqd1vqbEEYmrk7QCR1Jl9kG_buOq80VsEkO-wKAvWltj40NDq8txHBvWsgJu7WEdId3Jcec7sBh-AvFht4ZUldhty5Qmol4yfv6qBWIh86WsTUN7K8czTYk6E7d5VShvkGvvIkV3h7rGfp59fX28ttw8-P6--WXm8Fywdog1MSZB6qJGYWyRC5Lf7USTjrhuXYUiPQguZ60lRIsAFECGFOOg10Wz8_Qx8Pcfv2fFWqbt6FaiNEkyGudFadi0pP6L0h1XztR3cFPB9CWXGsBP-9K2JqynymZHzOZnzPp8Pvj1HXZgntGDyF0_8PRN9Wa6ItJ_WOfMCEk0ZLzB33RlWA</recordid><startdate>199201</startdate><enddate>199201</enddate><creator>DELAMARCHE, P</creator><creator>MONNIER</creator><creator>GRATAS-DELAMARCHE, A</creator><creator>KOUBI, H. 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H ; FAVIER, R</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c342t-47932fe180a547c06bb00774d6d4f38d1e06fe63898c66ecee074e227d3ecbbf3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1992</creationdate><topic>Biological and medical sciences</topic><topic>Blood Glucose - metabolism</topic><topic>Child</topic><topic>Child, Preschool</topic><topic>Epinephrine - blood</topic><topic>Epinephrine - metabolism</topic><topic>Exercise Test</topic><topic>Fatty Acids, Nonesterified - metabolism</topic><topic>Fundamental and applied biological sciences. Psychology</topic><topic>Glycerol - blood</topic><topic>Hematocrit</topic><topic>Humans</topic><topic>Intermediate and energetic metabolism</topic><topic>Lactates - blood</topic><topic>Lactic Acid</topic><topic>Male</topic><topic>Metabolisms and neurohumoral controls</topic><topic>Norepinephrine - blood</topic><topic>Norepinephrine - metabolism</topic><topic>Physical Exertion - physiology</topic><topic>Puberty - metabolism</topic><topic>Puberty - physiology</topic><topic>Vertebrates: anatomy and physiology, studies on body, several organs or systems</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>DELAMARCHE, P</creatorcontrib><creatorcontrib>MONNIER</creatorcontrib><creatorcontrib>GRATAS-DELAMARCHE, A</creatorcontrib><creatorcontrib>KOUBI, H. E</creatorcontrib><creatorcontrib>MAYET, M. H</creatorcontrib><creatorcontrib>FAVIER, R</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>Physical Education Index</collection><collection>MEDLINE - Academic</collection><jtitle>European Journal of Applied Physiology and Occupational Physiology</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>DELAMARCHE, P</au><au>MONNIER</au><au>GRATAS-DELAMARCHE, A</au><au>KOUBI, H. E</au><au>MAYET, M. H</au><au>FAVIER, R</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Glucose and free fatty acid utilization during prolonged exercise in prepubertal boys in relation to catecholamine responses</atitle><jtitle>European Journal of Applied Physiology and Occupational Physiology</jtitle><addtitle>Eur J Appl Physiol Occup Physiol</addtitle><date>1992-01</date><risdate>1992</risdate><volume>65</volume><issue>1</issue><spage>66</spage><epage>72</epage><pages>66-72</pages><issn>0301-5548</issn><issn>1439-6319</issn><eissn>1432-1025</eissn><eissn>1439-6327</eissn><coden>EJAPCK</coden><abstract>Ten prepubertal boys performed 60-min cycle exercise at about 60% of their maximal oxygen uptake as previously measured. To measure packed cell volume, plasma glucose, free fatty acids (FFA), glycerol and catecholamines, blood samples were drawn at rest using a heparinized catheter and at the 15th, 30th and 60th min of the exercise and after 30 min of recovery. At rest, the blood glucose concentrations were at the lowest values for normal. Exercise induced a small decrease of blood glucose which was combined with an abrupt increase of the noradrenaline concentration during the first 15 min. The FFA and glycerol concentrations increased throughout the exercise linearly with that of adrenaline. Compared to adults, the FFA uptake expressed per minute and per litre of oxygen uptake was greater in children. These results suggested that it is difficult for children to maintain a constant blood glucose concentration and that prolonged exercise provided a real stimulus to hypoglycaemia. An immediate and large increase in noradrenaline concentration during exercise and a greater utilization of FFA was probably used by children to prevent hypoglycaemia.</abstract><cop>Berlin</cop><pub>Springer</pub><pmid>1505542</pmid><doi>10.1007/BF01466276</doi><tpages>7</tpages></addata></record> |
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| subjects | Biological and medical sciences Blood Glucose - metabolism Child Child, Preschool Epinephrine - blood Epinephrine - metabolism Exercise Test Fatty Acids, Nonesterified - metabolism Fundamental and applied biological sciences. Psychology Glycerol - blood Hematocrit Humans Intermediate and energetic metabolism Lactates - blood Lactic Acid Male Metabolisms and neurohumoral controls Norepinephrine - blood Norepinephrine - metabolism Physical Exertion - physiology Puberty - metabolism Puberty - physiology Vertebrates: anatomy and physiology, studies on body, several organs or systems |
| title | Glucose and free fatty acid utilization during prolonged exercise in prepubertal boys in relation to catecholamine responses |
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