Adding heat to the live-high train-low altitude model: A practical insight from professional football

Buchheit, M; Racinais, S; Bilsborough, J; Hocking, J; Mendez-Villanueva, A; Bourdon, PC; Voss, S; Livingston, S; Christian, R; Périard, J; Cordy, J; Coutts, AJ

Adding heat to the live-high train-low altitude model: A practical insight from professional football

Buchheit, M Racinais, S Bilsborough, J Hocking, J Mendez-Villanueva, A Bourdon, PC Voss, S Livingston, S Christian, R Périard, J Cordy, J Coutts, AJ

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Publication Type:: Journal Article
Citation:: British Journal of Sports Medicine, 2013, 47 (SUPPL. 1)
Issue Date:: 2013-12-01

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Field	Value	Language
dc.contributor.author	Buchheit, M	en_US
dc.contributor.author	Racinais, S	en_US
dc.contributor.author	Bilsborough, J	en_US
dc.contributor.author	Hocking, J	en_US
dc.contributor.author	Mendez-Villanueva, A	en_US
dc.contributor.author	Bourdon, PC	en_US
dc.contributor.author	Voss, S	en_US
dc.contributor.author	Livingston, S	en_US
dc.contributor.author	Christian, R	en_US
dc.contributor.author	Périard, J	en_US
dc.contributor.author	Cordy, J	en_US
dc.contributor.author	Coutts, AJ https://orcid.org/0000-0002-1782-7691	en_US
dc.date.issued	2013-12-01	en_US
dc.identifier.citation	British Journal of Sports Medicine, 2013, 47 (SUPPL. 1)	en_US
dc.identifier.issn	0306-3674	en_US
dc.identifier.uri	http://hdl.handle.net/10453/26820
dc.description.abstract	Objectives To examine with a parallel group study design the performance and physiological responses to a 14-day off-season 'live high-train low in the heat' training camp in elite football players. Methods Seventeen professional Australian Rules Football players participated in outdoor football-specific skills (32±1°C, 11.5 h) and indoor strength (23±1°C, 9.3 h) sessions and slept (12 nights) and cycled indoors (4.3 h) in either normal air (NORM, n=8) or normobaric hypoxia (14±1 h/day, FiO2 15.2-14.3%, corresponding to a simulated altitude of 2500-3000 m, hypoxic (HYP), n=9). They completed the Yo-Yo Intermittent Recovery level 2 (Yo-YoIR2) in temperate conditions (23±1°C, normal air) precamp (Pre) and postcamp (Post). Plasma volume (PV) and haemoglobin mass (Hbmass) were measured at similar times and 4 weeks postcamp (4WPost). Sweat sodium concentration ((Na+)sweat) was measured Pre and Post during a heat-response test (44°C). Results Both groups showed very large improvements in Yo-YoIR2 at Post (+44%; 90% CL 38, 50), with no between-group differences in the changes (-1%; -9, 9). Postcamp, large changes in PV (+5.6%; -1.8, 5.6) and (Na+)sweat (-29%; -37, -19) were observed in both groups, while Hbmass only moderately increased in HYP (+2.6%; 0.5, 4.5). At 4WPost, there was a likely slightly greater increase in Hbmass (+4.6%; 0.0, 9.3) and PV (+6%; -5, 18, unclear) in HYP than in NORM. Conclusions The combination of heat and hypoxic exposure during sleep/training might offer a promising 'conditioning cocktail' in team sports.	en_US
dc.relation.ispartof	British Journal of Sports Medicine	en_US
dc.relation.isbasedon	10.1136/bjsports-2013-092559	en_US
dc.subject.classification	Sport Sciences	en_US
dc.subject.mesh	Humans	en_US
dc.subject.mesh	Acclimatization	en_US
dc.subject.mesh	Altitude	en_US
dc.subject.mesh	Athletic Performance	en_US
dc.subject.mesh	Atmospheric Pressure	en_US
dc.subject.mesh	Australia	en_US
dc.subject.mesh	Blood Volume	en_US
dc.subject.mesh	Exercise	en_US
dc.subject.mesh	Football	en_US
dc.subject.mesh	Hemoglobins	en_US
dc.subject.mesh	Hot Temperature	en_US
dc.subject.mesh	Hypoxia	en_US
dc.subject.mesh	Running	en_US
dc.subject.mesh	Sleep	en_US
dc.title	Adding heat to the live-high train-low altitude model: A practical insight from professional football	en_US
dc.type	Journal Article
utslib.citation.volume	SUPPL. 1	en_US
utslib.citation.volume	47	en_US
utslib.for	1106 Human Movement and Sports Sciences	en_US
utslib.for	09 Engineering	en_US
utslib.for	11 Medical and Health Sciences	en_US
utslib.for	13 Education	en_US
pubs.embargo.period	Not known	en_US
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Health
pubs.organisational-group	/University of Technology Sydney/Faculty of Health/Sports and Exercise Science
pubs.organisational-group	/University of Technology Sydney/Strength - CHSP - Health Services and Practice
pubs.organisational-group	/University of Technology Sydney/Strength - CHT - Health Technologies
pubs.organisational-group	/University of Technology Sydney/Students
utslib.copyright.status	closed_access
pubs.issue	SUPPL. 1	en_US
pubs.publication-status	Published	en_US
pubs.volume	47	en_US

Abstract:

Objectives To examine with a parallel group study design the performance and physiological responses to a 14-day off-season 'live high-train low in the heat' training camp in elite football players. Methods Seventeen professional Australian Rules Football players participated in outdoor football-specific skills (32±1°C, 11.5 h) and indoor strength (23±1°C, 9.3 h) sessions and slept (12 nights) and cycled indoors (4.3 h) in either normal air (NORM, n=8) or normobaric hypoxia (14±1 h/day, FiO2 15.2-14.3%, corresponding to a simulated altitude of 2500-3000 m, hypoxic (HYP), n=9). They completed the Yo-Yo Intermittent Recovery level 2 (Yo-YoIR2) in temperate conditions (23±1°C, normal air) precamp (Pre) and postcamp (Post). Plasma volume (PV) and haemoglobin mass (Hbmass) were measured at similar times and 4 weeks postcamp (4WPost). Sweat sodium concentration ((Na+)sweat) was measured Pre and Post during a heat-response test (44°C). Results Both groups showed very large improvements in Yo-YoIR2 at Post (+44%; 90% CL 38, 50), with no between-group differences in the changes (-1%; -9, 9). Postcamp, large changes in PV (+5.6%; -1.8, 5.6) and (Na+)sweat (-29%; -37, -19) were observed in both groups, while Hbmass only moderately increased in HYP (+2.6%; 0.5, 4.5). At 4WPost, there was a likely slightly greater increase in Hbmass (+4.6%; 0.0, 9.3) and PV (+6%; -5, 18, unclear) in HYP than in NORM. Conclusions The combination of heat and hypoxic exposure during sleep/training might offer a promising 'conditioning cocktail' in team sports.

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http://hdl.handle.net/10453/26820