Linked Life Data

8444733

Source:http://linkedlifedata.com/resource/pubmed/id/8444733

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1
pubmed:dateCreated
1993-4-6
pubmed:abstractText
Sympathetic nervous system activity as indicated by circulating norepinephrine has been demonstrated to increase with advancing chronological age both at rest and during submaximal exercise. Much of the earlier work investigating this aging phenomenon used a younger group that had a higher peak oxygen consumption (VO2) than did the older group, which made comparisons difficult. In the present study, young [n = 7, 36 +/- 1.0 (SE) yr] and old subjects (n = 8, 61 +/- 1.2 yr) were matched on peak VO2 and then exercised at approximately the same relative submaximal VO2 (75%) and power output on a cycle ergometer for 21 min. Blood samples were collected at rest and in the 7th, 14th, and last minute of a 21-min exercise bout via an indwelling catheter in an antecubital vein. The norepinephrine responses for the young and old groups, respectively, were as follows: rest, 486 +/- 111 vs. 673 +/- 108; 7 min, 1,258 +/- 255 vs. 1,185 +/- 172; 14 min, 1,639 +/- 316 vs. 1,528 +/- 288; and 21 min, 2,038 +/- 488 vs. 1,936 +/- 453 pg/ml. These responses were not significantly different between the groups at any time period. The epinephrine values for the age groups were not statistically different: rest, 115 +/- 60 vs 88 +/- 51; 7 min, 140 +/- 18 vs. 326 +/- 88; 14 min, 216 +/- 33 vs. 366 +/- 104; and 21 min, 324 +/- 100 vs. 447 +/- 113 pg/ml.(ABSTRACT TRUNCATED AT 250 WORDS)
pubmed:grant
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Jan
pubmed:issn
8750-7587
pubmed:author
pubmed:issnType
Print
pubmed:volume
74
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
49-54
pubmed:dateRevised
2007-11-14
pubmed:meshHeading
pubmed:year
1993
pubmed:articleTitle
Young and old subjects matched for aerobic capacity have similar noradrenergic responses to exercise.
pubmed:affiliation
Department of Human Kinetics, University of Wisconsin-Milwaukee 53201.
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, P.H.S.