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Markers of isometric training intensity and reductions in resting blood pressure

Markers of isometric training intensity and reductions in resting blood pressure

Devereux, Gavin R., Wiles, Jonathan D. and Swaine, Ian (2011) Markers of isometric training intensity and reductions in resting blood pressure. Journal of Sports Sciences, 29 (7). pp. 715-724. ISSN 0264-0414 (Print), 1466-447X (Online) (doi:10.1080/02640414.2011.552113)

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Abstract

In this study, we examined the correlations between selected markers of isometric training intensity and subsequent reductions in resting blood pressure. Thirteen participants performed a discontinuous incremental isometric exercise test to volitional exhaustion at which point mean torque for the final 2-min stage (2min-torquepeak) and peak heart rate peak (HRpeak) were identified. Also, during 4 weeks of training (3 sessions per week, comprising 4 × 2 min bilateral leg isometric exercise at 95% HRpeak), heart rate (HRtrain), torque (Torquetrain), and changes in EMG amplitude (ΔEMGamp) and frequency (ΔEMGfreq) were determined. The markers of training intensity were: Torquetrain relative to the 2min-torquepeak (%2min-torquepeak), EMG relative to EMGpeak (%EMGpeak), HRtrain ΔEMGamp, ΔEMGfreq, and %MVC. Mean systolic (74.9 mmHg) and arterial blood pressure (72.7mmHg) reductions correlated with %2min-torquepeak (r=70.65, P=0.02 and r=70.59, P=0.03), ΔEMGamp (r=0.66, P=0.01 and r=0.59, P=0.03), ΔEMGfreq (r=70.67, P=0.01 and r=70.64, P=0.02), and %EMGpeak (systolic blood pressure only; r=70.63, P=0.02). These markers best reflect the association between isometric training intensity and reduction in resting blood pressure observed after bilateral leg isometric exercise training. © 2011 Taylor & Francis.

Item Type: Article
Uncontrolled Keywords: local muscular fatigue, surface electromyography, torque, leg extension
Subjects: G Geography. Anthropology. Recreation > GV Recreation Leisure
Q Science > QP Physiology
Faculty / Department / Research Group: Faculty of Engineering & Science
Related URLs:
Last Modified: 14 Oct 2016 09:34
Selected for GREAT 2016: None
Selected for GREAT 2017: None
Selected for GREAT 2018: None
URI: http://gala.gre.ac.uk/id/eprint/13674

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