Article

Limitations to performance during alpine skiing.

School of Sport, Exercise and Health Sciences, Loughborough University, Leicestershire LE11 3TU, UK.
Experimental physiology (impact factor: 3.17). 11/2009; 95(3):404-10. DOI:10.1113/expphysiol.2009.047563
Source: PubMed

ABSTRACT Alpine skiing is characterized by high-intensity exercise of between 90 and 120 s duration that requires repeated phases of high-force isometric and eccentric contractions. The nature of these contractions, during which all fibre types are active, results in restricted blood flow to the working muscle, thereby reducing oxygen delivery and increasing metabolite accumulation. The consequence of this will be skeletal muscle fatigue, through both central and peripheral mechanisms, and a potential loss of motor control which will ultimately limit skiing performance.

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Keywords

120 s duration
 
Alpine skiing
 
contractions
 
eccentric contractions
 
fibre types
 
high-force isometric
 
high-intensity exercise
 
metabolite accumulation
 
peripheral mechanisms
 
phases
 
potential loss
 
working muscle