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Power output of the lower limb during variable inertial loading : A comparison between methods using single and repeated contractions

Pearson, S, Cobbold, M and Harridge, SD 2004, 'Power output of the lower limb during variable inertial loading : A comparison between methods using single and repeated contractions' , European Journal of Applied Physiology, 92 (1-2) , pp. 176-181.

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Abstract

The power-inertial load relationship of the lower limb muscles was studied during a single leg thrust using the Modified Nottingham Power Rig (mNPR) and during cycling exercise in nine young male subjects. The relationship between peak power and inertial load showed a parabolic-like relationship for mNPR exertions, with a peak [937 (SD 246) W] at 0.158 kg m(2), this being significantly (P <0.05) different from the power generated at both the lowest [723 (162) W] and highest [756 (206) W] inertial loads. In contrast, for cycling exercise power output did not differ significantly between inertial loads, except at the lowest inertia where power output was significantly ( P<0.05) less compared with all other inertial loads. Maximum peak power output during cycling was 1,620 (336) W, which was significantly (P <0.05) greater than that recorded on the mNPR. However, a close association was observed between the mean power generated by each method (r=0.84, P<0.05). The results suggest that during a single contraction a range of inertial loads is required to allow peak power to be expressed. Above a certain critical value, this is unnecessary during cycling movements where the load can be repeatedly accelerated.

Item Type: Article
Themes: Health and Wellbeing
Schools: Schools > School of Health Sciences > Centre for Health Sciences Research
Journal or Publication Title: European Journal of Applied Physiology
Publisher: Springer
Refereed: Yes
ISSN: 1439-6319
Related URLs:
Funders: Wellcome Trust
Depositing User: S Pearson
Date Deposited: 06 Jul 2015 11:05
Last Modified: 06 Jul 2015 11:05
URI: http://usir.salford.ac.uk/id/eprint/35077

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