The IHG dynamometers used in this study were donated by Zona Health (Boise, ID). This work was supported by the University of Windsor (Grant # 808316; CLM), a Heart and Stroke Foundation of Canada Postdoctoral Fellowship (PJM), and an Ontario Graduate Scholarship (MBB).
Cardiovascular stress reactivity tasks successfully predict the hypotensive response of isometric handgrip training in hypertensives
Article first published online: 19 FEB 2013
Copyright © 2013 Society for Psychophysiological Research
Volume 50, Issue 4, pages 407–414, April 2013
How to Cite
Badrov, M. B., Horton, S., Millar, P. J. and McGowan, C. L. (2013), Cardiovascular stress reactivity tasks successfully predict the hypotensive response of isometric handgrip training in hypertensives. Psychophysiology, 50: 407–414. doi: 10.1111/psyp.12031
- Issue published online: 5 MAR 2013
- Article first published online: 19 FEB 2013
- Manuscript Accepted: 20 DEC 2012
- Manuscript Received: 12 SEP 2012
- University of Windsor
- Isometric handgrip training;
- Blood pressure;
- Cardiovascular reactivity;
This study aimed to determine whether: (a) isometric handgrip (IHG) training lowers resting blood pressure (BP), (b) cardiovascular reactivity to a serial subtraction (SST), IHG (IHGT), and cold pressor (CPT) task predicts this hypotensive response, and (c) cardiovascular reactivity is attenuated posttraining. Resting BP and cardiovascular reactivity to a SST, IHGT, and CPT were measured in 24 hypertensives (51–74 years) before and after 10 weeks of IHG training (n = 12) or control (n = 12). IHG training lowered resting BP (Δ8/5 mmHg), whereby the decrease in systolic BP was correlated to pretraining systolic BP reactivity to the SST (r = −.85) and IHGT (r = −.79; all ps < .01), but not the CPT (r = .34; p > .01). Furthermore, following IHG training, systolic BP reactivity to the SST (Δ7 mmHg) and IHGT (Δ8 mmHg) was reduced (all ps < .01). The results offer promising implications for hypertensives and may provide a tool to identify IHG training responders.