Markers of isometric training intensity and reductions in resting blood pressure
Deutscher übersetzter Titel: | Marker der isometrischen Trainingsintensität und der Erholungsphase im Ruheblutdruck |
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Autor: | Devereux, Gavin R.; Wiles, Jonathan D.; Swaine, Ian |
Erschienen in: | Journal of sports sciences |
Veröffentlicht: | 29 (2011), 7, S. 715-724, Lit. |
Format: | Literatur (SPOLIT) |
Publikationstyp: | Zeitschriftenartikel |
Medienart: | Gedruckte Ressource |
Sprache: | Englisch |
ISSN: | 0264-0414, 1466-447X |
DOI: | 10.1080/02640414.2011.552113 |
Schlagworte: | |
Online Zugang: | |
Erfassungsnummer: | PU201404003983 |
Quelle: | BISp |
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 x 2 min bilateral leg isometric exercise at 95% HRpeak), heart rate (HRtrain), torque (Torquetrain), and changes in EMG amplitude (DEMGamp) and frequency (DEMGfreq) were determined. The markers of training intensity were: Torquetrain relative to the 2min-torquepeak (%2min-torquepeak), EMG relative to EMGpeak (%EMGpeak), HRtrain DEMGamp, DEMGfreq, and %MVC. Mean systolic (-4.9 mmHg) and arterial blood pressure (-2.7mmHg) reductions correlated with %2min-torquepeak (r = -0.65, P = 0.02 and r = -0.59, P = 0.03), DEMGamp (r = 0.66, P = 0.01 and r = 0.59, P = 0.03), DEMGfreq (r = -0.67, P = 0.01 and r = -0.64, P = 0.02), and %EMGpeak (systolic blood pressure only; r = -0.63, 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. Verf.-Referat