Devereux, Gavin R., Wiles, Jonathan D. and Swaine, Ian ORCID: 0000-0002-3747-1370 (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:https://doi.org/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 / School / Research Centre / Research Group:	Faculty of Engineering & Science
Related URLs:	Publisher
Last Modified:	21 Oct 2020 07:56
URI:	http://gala.gre.ac.uk/id/eprint/13674

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