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Relative match intensities at high altitude in highly-trained young soccer players (ISA3600)
Buchheit, M. Hammond, Kristal Bourdon, Pitre C. Simpson, Ben M. Lewis, Laura Schmidt, Walter F. Gore, Christopher J. Aughey, Robert
Buchheit, M.
Hammond, Kristal
Bourdon, Pitre C.
Simpson, Ben M.
Lewis, Laura
Schmidt, Walter F.
Gore, Christopher J.
Aughey, Robert
Citations
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Abstract
To compare relative match intensities of sea-level versus high-altitude native soccer players during a 2-week camp at 3600 m, data from 7 sea-level (Australian U17 National team, AUS) and 6 high-altitude (a Bolivian U18 team, BOL) native soccer players were analysed. Two matches were played at sea-level and three at 3600 m on Days 1, 6 and 13. The Yo-Yo Intermittent recovery test (vYo-YoIR1) was performed at sea-level, and on Days 3 and 10. Match activity profiles were measured via 10-Hz GPS. Distance covered >14.4 km.h-1 (D>14.4 km·h-1) and >80% of vYo-YoIR1 (D>80%vYo-YoIR1) were examined. Upon arrival at altitude, there was a greater decrement in vYo-YoIR1 (Cohen’s d +1.0, 90%CL ± 0.8) and D>14.4 km·h-1 (+0.5 ± 0.8) in AUS. D>14.4 km.h-1 was similarly reduced relative to vYo-YoIR1 in both groups, so that D>80%vYo-YoIR1 remained similarly unchanged (-0.1 ± 0.8). Throughout the altitude sojourn, vYo-YoIR1 and D>14.4 km·h-1 increased in parallel in AUS, so that D>80%vYo-YoIR1 remained stable in AUS (+6.0%/match, 90%CL ± 6.7); conversely D>80%vYo-YoIR1 decreased largely in BOL (-12.2%/match ± 6.2). In sea-level natives competing at high-altitude, changes in match running performance likely follow those in high-intensity running performance. Bolivian data confirm that increases in ‘fitness’ do not necessarily translate into greater match running performance, but rather in reduced relative exercise intensity.
Keywords
Association football, hypoxia, match running performance, Garvican, Garvican-Lewis
Date
2015
Type
Journal article
Journal
Journal of Sports Science and Medicine
Book
Volume
14
Issue
1
Page Range
98-102
Article Number
ACU Department
Centre for Exercise and Nutrition
Faculty of Health Sciences
Faculty of Health Sciences
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Relation URI
DOI
Source URL
Event URL
Open Access Status
Open access
License
File Access
Open