"Live High-Train Low and High" Hypoxic Training Improves Team-Sport Performance

Brocherie, Franck; Millet, Grégoire P.; Hauser, Anna; Steiner, Thomas; Rysman, Jan; Wehrlin, Jon Peter; Girard, Olivier (2015). "Live High-Train Low and High" Hypoxic Training Improves Team-Sport Performance Medicine & Science in Sports & Exercise, 47(10), pp. 2140-2149. Lippincott Williams & Wilkins 10.1249/MSS.0000000000000630

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Purpose: This study aims to investigate physical performance and hematological changes in 32 elite male team-sport players after 14 d of "live high-train low" (LHTL) training in normobaric hypoxia (≥14 h·d at 2800-3000 m) combined with repeated-sprint training (six sessions of four sets of 5 × 5-s sprints with 25 s of passive recovery) either in normobaric hypoxia at 3000 m (LHTL + RSH, namely, LHTLH; n = 11) or in normoxia (LHTL + RSN, namely, LHTL; n = 12) compared with controlled "live low-train low" (LLTL; n = 9) training. Methods: Before (Pre), immediately after (Post-1), and 3 wk after (Post-2) the intervention, hemoglobin mass (Hbmass) was measured in duplicate [optimized carbon monoxide (CO) rebreathing method], and vertical jump, repeated-sprint (8 × 20 m-20 s recovery), and Yo-Yo Intermittent Recovery level 2 (YYIR2) performances were tested. Results: Both hypoxic groups similarly increased their Hbmass at Post-1 and Post-2 in reference to Pre (LHTLH: +4.0%, P < 0.001 and +2.7%, P < 0.01; LHTL: +3.0% and +3.0%, both P < 0.001), whereas no change occurred in LLTL. Compared with Pre, YYIR2 performance increased by ∼21% at Post-1 (P < 0.01) and by ∼45% at Post-2 (P < 0.001), with no difference between the two intervention groups (vs no change in LLTL). From Pre to Post-1, cumulated sprint time decreased in LHTLH (-3.6%, P < 0.001) and LHTL (-1.9%, P < 0.01), but not in LLTL (-0.7%), and remained significantly reduced at Post-2 (-3.5%, P < 0.001) in LHTLH only. Vertical jump performance did not change. Conclusions: "Live high-train low and high" hypoxic training interspersed with repeated sprints in hypoxia for 14 d (in season) increases the Hbmass, YYIR2 performance, and repeated-sprint ability of elite field team-sport players, with benefits lasting for at least 3 wk postintervention.

Item Type:	Journal Article (Original Article)
Division/Institute:	Swiss Federal Institute of Sports Magglingen SFISM > EHSM - Leistungssport > Sportphysiologie Ausdauer
Name:	Brocherie, Franck; Millet, Grégoire P.; Hauser, Anna; Steiner, Thomas; Rysman, Jan; Wehrlin, Jon Peter and Girard, Olivier
ISSN:	0195-9131 (Print) 1530-0315 (Online)
Publisher:	Lippincott Williams & Wilkins
Language:	English
Submitter:	Service Account
Date Deposited:	15 Feb 2021 14:19
Last Modified:	23 Oct 2021 02:17
Publisher DOI:	10.1249/MSS.0000000000000630
PubMed ID:	25668402
Uncontrolled Keywords:	Hemoglobin mass Hypoxia Repeated-sprint ability Team sports
ARBOR DOI:	10.24451/arbor.10913
URI:	https://arbor.bfh.ch/id/eprint/10913