Strength training and hemodynamic responses to exercise.

Full Abstract

Sixty-two older adults (68.4+/-6 years) were randomized into a control group (n=16), low-intensity exercise group (n=22, LEX; 50% 1-repetition maximum; 13 repetitions per exercise), or a high-intensity exercise group (n=24, HEX; 80% 1-repetition maximum; eight repetitions per exercise) group. Subjects trained for 24 weeks, performing 1 set for each of 13 exercises. Subjects performed a graded exercise test (GXT) at baseline and after 24 weeks of strength training. Heart rate, systolic, and diastolic blood pressures were measured at rest, during the GXT and 1, 3, and 5-min post-GXT. Mean arterial pressure was also calculated. Post-training, time to peak systolic and diastolic blood pressures and heart rate was increased in the LEX and HEX groups by 22.9% and 44.5%, respectively (p<0.05). Diastolic blood pressure, heart rate, and mean arterial pressure during the GXT were significantly decreased (p<0.05) in the HEX group following training. Post-GXT heart rate was lower in the HEX and LEX groups compared to control (p<0.05) indicating a more rapid recovery. Resistance exercise prolongs the onset of peak cardiovascular responses, decreases the cardiovascular response to exertion, and improves recovery from maximal exertion.Copyright 2003 Le Jacq Communications, Inc.

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Author information

Author/s: Vincent, Kevin R (KR); Vincent, Heather K (HK); Braith, Randy W (RW); Bhatnagar, Vineesh (V); Lowenthal, David T (DT);

Affiliation: Center for Exercise Science, College of Health and Human Performance, University of Florida, Gainesville, FL, USA. kvincent(-atsign-)ufl.edu

Journal and publication information

Publication Type: Clinical Trial; Comparative Study; Journal Article; Randomized Controlled Trial

Journal: The American journal of geriatric cardiology (Am J Geriatr Cardiol), published in United States. (Language: eng)

Reference: -2003 Mar-Apr; vol 12 (issue 2) : pp 97-106

Dates: Created 2003/03/07; Completed 2003/07/02; Revised 2007/11/15;

PMID: 12624579, status: MEDLINE (last retrieval date: 12/26/2008)

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MeSH headings (categories)

This article was linked to the MESH Headings shown below.

Aged
Aged, 80 and over
Blood Pressure - physiology
Exercise - physiology
Female
Heart Rate - physiology
Hemodynamics - physiology
Humans

Male
Middle Aged
Muscle, Skeletal - physiology
Oxygen Consumption - physiology
Physical Education and Training
Physical Endurance - physiology
Recovery of Function - physiology
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