Int J Sports Med 2003; 24(6): 441-445
DOI: 10.1055/s-2003-41172
Training & Testing
© Georg Thieme Verlag Stuttgart · New York

Reduction of Blood Pressure Response During Strength Training Through Intermittent Muscle Relaxations

K.  Baum1 , T.  Rüther1 , D.  Essfeld1
  • 1Department of Physiology, German Sport University, Cologne, Germany
Further Information

Publication History

Accepted after revision: December 30, 2002

Publication Date:
07 August 2003 (online)

Abstract

The increase in blood pressure during training is a disadvantage of strength training in the elderly. To reduce this effect it is generally recommended to apply lower levels of relative muscle strength with longer contraction durations or higher number of repetitions (continuous mode (CM), e. g. 50 % of maximal strength, 10 to 15 repetitions without pauses). Alternatively, higher contraction forces could be combined with frequent periods of muscle relaxation and fewer repetitions (intermittent mode (IM), e. g. 80 % of maximal strength, 8 repetitions consisting of 1.5 s concentric contraction, 1.5 s eccentric contraction and 3 s pause). We compared the blood pressure effects of both approaches during leg press exercise in two age groups (10 subjects aged 22 to 42 y, 9 subjects aged 60 to 72 y). Blood pressure was measured continuously by a non-invasive method (FINAPRESTM, Ohmeda 2300, Englewood USA). Results: 1. The age of the subjects had no significant influence on the slopes of blood pressure increase during the different exercise modes. 2. The frequent insertion of short (3 s) periods of muscle relaxation (IM) decreased the blood pressure response more effectively than a reduction in contraction strength alone (CM). Short muscle relaxations have an immediate, mechanical effect on blood pressure and they allow a metabolic recovery which attenuates the trend of blood pressure increase.

References

K. Baum

Deutsche Sporthochschule Köln · Physiologisches Institut

Carl-Diem-Weg 6 · 50933 Köln · Germany ·

Phone: +49-221-4982219

Fax: +49-221-4982679

Email: baum@professor-baum.de