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Historical Improvement in Speed Skating Economy

Noordhof, Dionne A and van Tok, Elmy and Joosten, Florentine SJGM and Hettinga, Florentina J and Hoozemans, Marco JM and Foster, Carl and de Koning, Jos J (2017) 'Historical Improvement in Speed Skating Economy.' International Journal of Sports Physiology and Performance, 12 (2). 175 - 181. ISSN 1555-0265

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Abstract

Half the improvement in 1500-m speed-skating world records can be explained by technological innovations and the other half by athletic improvement. It is hypothesized that improved skating economy is accountable for much of the athletic improvement. Purpose - To determine skating economy in contemporary athletes and to evaluate the change in economy over the years. Methods - Contemporary skaters of the Dutch national junior team (n=8) skated 3 bouts of 6 laps at submaximal velocity, from which skating economy was calculated (in mL O2·kg-1·km-1). A literature search provided historic data of skating velocity and submaximal VO2 (in mL·kg-1·min-1), from which skating economy was determined. The association between year and skating economy was determined using linear regression analysis. Correcting the change in economy for technological innovations resulted in an estimate of the association between year and economy due to athletic improvement. Results An average (±SD) skating economy of 73.4±6.4 mL O2·kg-1·km-1 was found in contemporary athletes. Skating economy improved significantly over the historical timeframe (-0.57 mL O2·kg-1·km-1 per year, 95% confidence interval [-0.84, -0.31]). In the final regression model for the klapskate era, with altitude as confounder, skating economy improved with a non-significant -0.58 mL O2·kg-1·km-1 each year ([-1.19, 0.035]). Conclusions Skating economy was 73.4±6.4 mL O2·kg-1·km-1 in contemporary athletes and improved over the past ~50 years. The association between year and skating economy due to athletic improvement, for the klapskate era, approached significance, suggesting a possible improvement in economy over these years.

Item Type: Article
Uncontrolled Keywords: performance, efficiency, aerobic capacity, cyclic sports
Subjects: Q Science > QP Physiology
R Medicine > RC Internal medicine > RC1200 Sports Medicine
Divisions: Faculty of Science and Health > Sport, Rehabilitation and Exercise Sciences, School of
Depositing User: Jim Jamieson
Date Deposited: 27 May 2016 14:43
Last Modified: 31 Jul 2018 15:15
URI: http://repository.essex.ac.uk/id/eprint/16829

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