Cardiovascular stress associated with concentric and eccentric isokinetic exercise in young and older adults

Heart rate (HR), mean arterial blood pressure (MAP), and rate-pressure product (RPP) responses to submaximal isokinetic concentric (CON) and eccentric (ECC) knee extension exercise were compared at the same absolute torque output in 20 young (mean+/-SD=23.2+/-1.7 years) and 20 older (mean+/-SD=75.2+...

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Published in:The journals of gerontology. Series A, Biological sciences and medical sciences Biological sciences and medical sciences, 2000-04, Vol.55 (4), p.B177-B182
Main Authors: Overend, T J, Versteegh, T H, Thompson, E, Birmingham, T B, Vandervoort, A A
Format: Article
Language:English
Subjects:
Adult
Aged
Blood Pressure
Exercise
Female
Gerontology
Heart
Heart Rate
Humans
Male
Muscle Contraction
Myocardium - metabolism
Older people
Oxygen Consumption
Young adults
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Summary:Heart rate (HR), mean arterial blood pressure (MAP), and rate-pressure product (RPP) responses to submaximal isokinetic concentric (CON) and eccentric (ECC) knee extension exercise were compared at the same absolute torque output in 20 young (mean+/-SD=23.2+/-1.7 years) and 20 older (mean+/-SD=75.2+/-4.6 years) adults. After determination of peak CON and ECC torques, subjects performed separate, randomly ordered, 2-minute bouts of isokinetic CON and ECC exercise (90 degrees/s, exercise intensity: 50% of CON peak torque). CON exercise elicited greater changes in HR, MAP, and RPP than ECC exercise (p
ISSN:1079-5006
1758-535X
DOI:10.1093/gerona/55.4.B177