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Adv Exp Med Biol. 2013;765:81-6. doi: 10.1007/978-1-4614-4989-8_12.

NIRS measurements with elite speed skaters: comparison between the ice rink and the laboratory.

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1
School of Biological Sciences, University of Essex, Colchester, UK. chesfo@essex.ac.uk

Abstract

Wearable, wireless near-infrared (NIR) spectrometers were used to compare changes in on-ice short-track skating race simulations over 1,500 m with a 3-min cycle ergometry test at constant power output (400 W). The subjects were six male elite short-track speed skaters. Both protocols elicited a rapid desaturation (∆TSI%) in the muscle during early stages (initial 20 s); however, asymmetry between right and left legs was seen in ΔTSI% for the skating protocol, but not for cycling. Individual differences between skaters were present in both protocols. Notably, one individual who showed a relatively small TSI% change (-10.7%, group mean = -26.1%) showed a similarly small change during the cycling protocol (-5.8%, group mean = -14.3%). We conclude that NIRS-detected leg asymmetry is due to the specific demands of short-track speed skating. However, heterogeneity between individuals is not specific to the mode of exercise. Whether this is a result of genuine differences in physiology or a reflection of differences in the optical properties of the leg remains to be determined.

PMID:
22879018
DOI:
10.1007/978-1-4614-4989-8_12
[Indexed for MEDLINE]
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