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Effects of exercise on plasma viscosity in athletes and sedentary normal subjects.

Overview of attention for article published in Clinical Cardiology: International Journal for Cardiovascular Diseases, January 1981
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Title
Effects of exercise on plasma viscosity in athletes and sedentary normal subjects.
Published in
Clinical Cardiology: International Journal for Cardiovascular Diseases, January 1981
Pubmed ID
Authors

Letcher, R L, Pickering, T G, Chien, S, Laragh, J H

Abstract

To assess the immediate and long-term effects of exercise on factors regulating blood flow, we measured plasma viscosity (eta p) and plasma renin activity (PRA) in 17 trained runners and 16 sedentary healthy subjects before and 10 min after graded treadmill exercise. Resting eta p was lower in runners primarily because of significantly lower fibrinogen concentration. Compared to nonrunners with similar 24-h urine electrolyte excretion rates, runners were characterized by lower PRA at rest. In view of the overall correlation between heart rate and PRA before exercise, reduced adrenergic tone was probably a major factor contributing to the lower PRA in runners. After exercise, plasma viscosity and PRA exceeded control levels, and were similar in magnitude in runners and sedentary subjects. Changes in plasma viscosity were less than expected from the degree of hemoconcentration, primarily because enhanced fibrinolysis maintained fibrinogen level constant. To the extent that plasma viscosity affects viscous flow resistance, the results suggest that tissue perfusion and oxygen delivery rate at rest are greater in trained runners than in sedentary subjects, but these variables become similar after maximum exertion.

Mendeley readers

The data shown below were compiled from readership statistics for 13 Mendeley readers of this research output. Click here to see the associated Mendeley record.

Geographical breakdown

Country Count As %
Unknown 13 100%

Demographic breakdown

Readers by professional status Count As %
Researcher 3 23%
Student > Ph. D. Student 3 23%
Student > Master 2 15%
Other 1 8%
Student > Postgraduate 1 8%
Other 3 23%
Readers by discipline Count As %
Unspecified 4 31%
Agricultural and Biological Sciences 3 23%
Sports and Recreations 2 15%
Computer Science 1 8%
Chemistry 1 8%
Other 2 15%

Attention Score in Context

This research output has an Altmetric Attention Score of 1. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 15 July 2013.
All research outputs
#2,904,406
of 3,628,172 outputs
Outputs from Clinical Cardiology: International Journal for Cardiovascular Diseases
#394
of 506 outputs
Outputs of similar age
#61,378
of 76,611 outputs
Outputs of similar age from Clinical Cardiology: International Journal for Cardiovascular Diseases
#3
of 9 outputs
Altmetric has tracked 3,628,172 research outputs across all sources so far. This one is in the 2nd percentile – i.e., 2% of other outputs scored the same or lower than it.
So far Altmetric has tracked 506 research outputs from this source. They receive a mean Attention Score of 2.1. This one is in the 2nd percentile – i.e., 2% of its peers scored the same or lower than it.
Older research outputs will score higher simply because they've had more time to accumulate mentions. To account for age we can compare this Altmetric Attention Score to the 76,611 tracked outputs that were published within six weeks on either side of this one in any source. This one is in the 1st percentile – i.e., 1% of its contemporaries scored the same or lower than it.
We're also able to compare this research output to 9 others from the same source and published within six weeks on either side of this one. This one has scored higher than 6 of them.