NDLI: Are there di V erences in running economy at di V erent velocities for well-trained distance runners ?

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Are there di V erences in running economy at di V erent velocities for well-trained distance runners ?

Content Provider	Semantic Scholar
Author	Helgerud, Jan Støren, Øyvind
Copyright Year	2009
Abstract	The present study investigated whether there are diVerences in running economy at diVerent velocities for well-trained distance runners, and to what extent a commonly used incremental protocol for measuring oxygen uptake (VO2) at diVerent velocities aVects the reliability of these measurements. Fifteen well-trained distance runners (9 male and 6 female) participated in this study. Gross oxygen cost of running (CR), heart rate (HR) and [La ]b during 5-min runs at velocities ranging from 8.0 to 17 km h¡1, representing intensities ranging from 60 to 90% of maximal oxygen consumption (VO2max) was measured on two diVerent days in random order. The athletes were also tested for lactate threshold, VO2max and time to exhaustion at MAS (tMAS). No signiWcant diVerences in CR between the diVerent relative velocities or the diVerent set velocities were found up to 90% of VO2max. The incremental protocol for measuring VO2 at diVerent velocities was found not to aVect the reliability of these measurements. All athletes reached their VO2max whilst running to exhaustion at MAS. The females showed signiWcantly lower VO2max, but signiWcantly better CR than the males. At velocities representing intensities between 60 and 90% of VO2max, no diVerences in CR were found. The commonly used incremental protocol for measuring oxygen uptake (VO2) at diVerent velocities was found not to aVect the reliability of these measurements. This means that CR measured at sub-maximal velocities are representative for CR at race velocity for distances above 10,000 m for most runners.
File Format	PDF HTM / HTML
Alternate Webpage(s)	http://www.hokksund-rehab.no/filarkiv/File/Forskningsartikler/Helgerud__Stoeren__Hoff_-_running_economy_2009.pdf
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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