Comparison of heart-rate and blood-pressure increases during isokinetic eccentric versus isometric exercise in older adults

Journal of Aging and Physical Activity
Deanna L HuggettA A Vandervoort

Abstract

The authors compared heart-rate and blood-pressure responses to typical isometric (ISO) and isokinetic (90 degrees /s) eccentric (ECC) resistance-training protocols in older adults. Twenty healthy older adults (74 +/- 5 years old) performed randomly ordered ISO and isokinetic ECC exercise (3 sets of 10 repetitions) at a target intensity of 100 % of their peak ISO torque value. Heart rate and systolic (SBP) and diastolic (DBP) blood pressures were recorded continuously, and mean arterial pressure (MAP) and rate-pressure product (RPP) were calculated. ECC peak torque (139 +/- 33 N. m) was significantly greater than ISO peak torque (115 +/- 26 N. m; p <.001). All variables increased significantly (p <.001) during both ISO and ECC exercise. Changes in SBP, DBP, MAP, and RPP were significantly greater during ISO exercise than during ECC exercise (p <.001). Clinically, an isokinetic ECC exercise program enables older adults to work at the same torque output with less cardiovascular stress than ISO exercise.

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Citations

Apr 2, 2014·Acta Obstetricia Et Gynecologica Scandinavica·Cristine H FerreiraKari Bø
Jan 1, 2015·Healthcare·Carol E RogersKayla Garver
Dec 3, 2016·The Journals of Gerontology. Series A, Biological Sciences and Medical Sciences·Baback RoshanravanUNKNOWN Health ABC study
Dec 14, 2019·Current Sports Medicine Reports·Julien PaulusThierry Bury
Jul 10, 2009·The Cochrane Database of Systematic Reviews·Chiung-Ju Liu, Nancy K Latham
Apr 11, 2018·The Journal of Cardiovascular Nursing·Kathy D WrightShirley M Moore
Oct 14, 2011·Journal of Strength and Conditioning Research·Aline F BritoAlexandre S Silva
Jul 17, 2010·Journal of Strength and Conditioning Research·Adam S Lepley, Brian M Hatzel

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