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Published on: July 5, 2017
Continuous hemodynamic response to maximal dynamic strength testing in older adults
Nathan J de Vos1, Nalin A Singh, Dale A Ross
1School of Exercise and Sport Sciences, Faculty of Health Sciences, University of Sydney, Lidcombe, NSW, Australia. devos@optusnet.com.au
Archives of Physical Medicine and Rehabilitation
|January 30, 2008
Summary
Older adults experienced significant, temporary increases in blood pressure and heart rate during maximal strength testing. The leg press exercise showed the most pronounced hemodynamic response, suggesting it warrants close monitoring.
Area of Science:
- Gerontology
- Cardiovascular Physiology
- Exercise Science
Background:
- Assessing cardiovascular responses to strength training in older adults is crucial for safety.
- Understanding hemodynamic changes during maximal dynamic strength-single-repetition maximum (1-RM) testing provides insights into physiological stress.
Purpose of the Study:
- To quantify acute changes in blood pressure and heart rate during 1-RM testing in healthy older adults.
- To identify specific exercises that elicit the most significant hemodynamic responses.
Main Methods:
- A descriptive, cross-sectional study was conducted with 43 community-dwelling, nonresistance-trained older adults (aged 60+).
- Systolic blood pressure (SBP), diastolic blood pressure (DBP), and heart rate were measured at rest and during 1-RM testing on leg press, knee extension, and knee flexion machines.
Main Results:
- Resting blood pressure and heart rate were not significantly affected by hypertension or overweight status.
- All exercises induced significant increases in SBP, DBP, and heart rate compared to rest (P<.001).
- The leg press elicited the highest SBP (236+/-51mmHg) and DBP (140+/-46mmHg) values, while knee extension showed the widest heart rate fluctuations.
Conclusions:
- Maximal strength testing in older adults causes large, transient, and asymptomatic blood pressure and heart rate excursions.
- The leg press exercise demonstrates the most substantial hemodynamic response, highlighting its importance for monitoring during clinical strength assessments.
