NDLI: Training induced changes in quadriceps activation during maximal eccentric contractions.

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Training induced changes in quadriceps activation during maximal eccentric contractions.

Content Provider	Semantic Scholar
Author	Voukelatos, Dimitrios Kirkland, Mathew Pain, Matthew T. G.
Copyright Year	2018
Abstract	Despite full voluntary effort, neuromuscular activation of the quadriceps group of muscles appears inhibited during eccentric contractions. A nerve stimulation protocol during dynamic contractions of the quadriceps was developed that employed triplets of supramaximal pulses to assess suppressed eccentric activation. Subsequently the effects of a short training intervention, performed on a dynamometer, on eccentric strength output and neural inhibition were examined. Torque-angular velocity (T-ω) and experimental voluntary neural drive-angular velocity (%VA-ω; %VA, obtained via the interpolated twitch technique) datasets, were obtained from pre- and post-training testing sessions. Non-linear regression fits of a seven parameter torque function and of a 3rd degree polynomial were performed on the pre- and post-training T-ω and %VA-ω datasets respectively. T-test showed a significant (p < 0.05) increase in the overall torque output post-training for the group, with three out of the six subjects demonstrating a significant (p < 0.05) increase in the torque output across the range of angular velocities as shown by the extra-sum-of-squares F-test. A significant increase (p < 0.05) in the %VA post-training was also observed as well as a reduction in the plateauing of the torque output during fast eccentric contractions.
Starting Page	66
Ending Page	72
Page Count	7
File Format	PDF HTM / HTML
DOI	10.1016/j.jbiomech.2018.03.025
PubMed reference number	29576313
Journal	Medline
Volume Number	73
Alternate Webpage(s)	http://www.asbweb.org/conferences/2012/abstracts/140.pdf
Alternate Webpage(s)	https://dspace.lboro.ac.uk/dspace-jspui/bitstream/2134/32880/1/voukelatos%20et%20al%202018%20repository.pdf
Alternate Webpage(s)	https://doi.org/10.1016/j.jbiomech.2018.03.025
Journal	Journal of biomechanics
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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