Force training induces changes in human muscle membrane properties.

Z'Graggen, Werner Josef; Trautmann, Joël Philippe; Bostock, Hugh (2016). Force training induces changes in human muscle membrane properties. Muscle & nerve, 54(1), pp. 144-146. John Wiley & Sons 10.1002/mus.25149

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INTRODUCTION Human muscle membrane properties can be assessed in vivo by recording muscle velocity recovery cycles (MVRCs). This study was undertaken to study the effect of muscle force training on MVRC parameters. METHODS MVRCs with 1 to 5 conditioning stimuli were recorded from brachioradialis muscle before and after 2 weeks of muscle force training in 12 healthy subjects. The effects of training on relative refractory period and early and late supernormality were quantified. RESULTS Force training induced a reduction of relative refractory period (P < 0.0001), while early supernormality was increased (P < 0.02) and peaked earlier (P < 0.01). Late supernormality and the increases in late supernormality due to 2 and 5 conditioning stimuli remained unchanged. CONCLUSIONS Muscle force training leads to hyperpolarization of the resting muscle membrane potential, probably caused by an increase in the number of sodium pump sites. Muscle Nerve 54: 144-146, 2016.

Item Type:

Journal Article (Original Article)

Division/Institute:

04 Faculty of Medicine > Pre-clinic Human Medicine > Institute of Anatomy
04 Faculty of Medicine > Department of Head Organs and Neurology (DKNS) > Clinic of Neurology

UniBE Contributor:

Z'Graggen, Werner Josef and Trautmann, Joël Philippe

Subjects:

600 Technology > 610 Medicine & health

ISSN:

0148-639X

Publisher:

John Wiley & Sons

Language:

English

Submitter:

Stefanie Hetzenecker

Date Deposited:

27 Jul 2016 15:51

Last Modified:

13 Sep 2017 14:29

Publisher DOI:

10.1002/mus.25149

PubMed ID:

27104654

Uncontrolled Keywords:

early supernormality; force training; muscle membrane potential; muscle velocity recovery cycle; relative refractory period

BORIS DOI:

10.7892/boris.84419

URI:

https://boris.unibe.ch/id/eprint/84419

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