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

Publisher:
BMJ Publishing Group
Publication Type:
Journal Article
Citation:
British Journal Of Sports Medicine, 2013, 47 (S1), pp. 59 - 69
Issue Date:
2013-01
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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-speci?c 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 15.214.3%, corresponding to a simulated altitude of 25003000 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).
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