University of Surrey

Test tubes in the lab Research in the ATI Dance Research

Distribution of motor unit potential velocities in the biceps brachii muscle of sprinters and endurance athletes during short static contractions at low force levels.

Klaver-Król, EG, Henriquez, NR, Oosterloo, SJ, Klaver, P, Kuipers, H and Zwarts, MJ (2010) Distribution of motor unit potential velocities in the biceps brachii muscle of sprinters and endurance athletes during short static contractions at low force levels. J Electromyogr Kinesiol, 20 (6). pp. 1107-1114.

Full text not available from this repository.

Abstract

In surface electromyography (sEMG), the distribution of motor unit potential (MUP) velocities has been shown to reflect the proportion of faster and slower propagating MUPs. This study investigated whether the distribution of MUP velocities could distinguish between sprinters and endurance athletes in not-specifically trained muscle (biceps brachii). sEMG results were acquired from 15 sprinters and 18 endurance athletes during short static contractions (3.8s) at three force levels: unloaded, 10% and 20% of maximum voluntary contraction. The features extracted from the sEMG were: the mean muscle conduction velocity (CV) - estimated using the inter-peak latency and the cross-correlation methods, the within-subject skewness of MUP velocities (expressing the relative proportions of faster and slower propagating MUPs), and the within-subject standard deviation of MUP velocities. Sprinters had a higher CV than endurance athletes using both methods. Sprinters also demonstrated a greater proportion of fast propagating MUPs, as indicated by the skewness. Thus, the distribution of MUP velocities was able to demonstrate physiological differences between sprinters and endurance athletes during short contractions at low forces. The findings can be extrapolated to the motor unit level. Since the investigated muscle was not involved in specific training, the differences seem to reflect inherited properties.

Item Type: Article
Authors :
NameEmailORCID
Klaver-Król, EGUNSPECIFIEDUNSPECIFIED
Henriquez, NRUNSPECIFIEDUNSPECIFIED
Oosterloo, SJUNSPECIFIEDUNSPECIFIED
Klaver, Pp.klaver@surrey.ac.ukUNSPECIFIED
Kuipers, HUNSPECIFIEDUNSPECIFIED
Zwarts, MJUNSPECIFIEDUNSPECIFIED
Date : December 2010
Identification Number : https://doi.org/10.1016/j.jelekin.2010.05.008
Uncontrolled Keywords : Adult, Arm, Electromyography, Humans, Male, Motor Neurons, Muscle Contraction, Muscle, Skeletal, Physical Endurance, Physical Fitness, Running
Related URLs :
Depositing User : Symplectic Elements
Date Deposited : 17 May 2017 10:40
Last Modified : 17 May 2017 14:51
URI: http://epubs.surrey.ac.uk/id/eprint/828708

Actions (login required)

View Item View Item

Downloads

Downloads per month over past year


Information about this web site

© The University of Surrey, Guildford, Surrey, GU2 7XH, United Kingdom.
+44 (0)1483 300800