Impact of Active and Passive Hypoxia as Re-Warm-Up Activities on Rugby Players’ Performance

Domingo Jesús Ramos-Campo, João Malta, Guillermo Olcina, Rafael Timón, Armando Raimundo and Pablo Tomas-Carus
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Domingo Jesús Ramos-Campo: Faculty of Sports, UCAM, Catholic University San Antonio, 30107 Murcia, Spain
João Malta: Departamento de Desporto e Saúde, Escola de Ciências e Tecnologia, Universidade de Évora, 7000-645 Évora, Portugal
Guillermo Olcina: Faculty of Sport Sciences, University of Extremadura, 10003 Cáceres, Spain
Rafael Timón: Faculty of Sport Sciences, University of Extremadura, 10003 Cáceres, Spain
Armando Raimundo: Departamento de Desporto e Saúde, Escola de Ciências e Tecnologia, Universidade de Évora, 7000-645 Évora, Portugal
Pablo Tomas-Carus: Departamento de Desporto e Saúde, Escola de Ciências e Tecnologia, Universidade de Évora, 7000-645 Évora, Portugal

IJERPH, 2020, vol. 17, issue 8, 1-12

Abstract: The aim of this study was to analyse the effect of four types of re-warm-up (R-WU) activity, namely rest in normoxia (RN) at FiO 2 = 20.9%, rest in hypoxia (RH) at FiO 2 = 15%, activity (4 × 5 jumps/15 s) in normoxia (AN) and activity in hypoxia (AH) on physical performance. Ten elite male rugby players completed a 15-min warm-up followed by one of the 15-min randomized R-WU strategies. After R-WU, countermovement jump (CMJ), 20 m sprint and repeat sprint ability (RSA) tests were assessed. Compared to passive strategies (RN and RH), tympanic temperature was higher after active R-WU (AN and AH) ( p = 0.016). Higher values of CMJ height ( p = 0.037) and 20 m sprint ( p = 0.02) were found in AH than in RN. In addition, mean RSA was lower ( p = 0.008) in AH than in RN and RH. Blood lactate concentration was higher ( p = 0.007) after RN and AN strategies than after AH. Muscle O 2 saturation ( p = 0.021) and total Hb ( p = 0.042) were higher after AH than after the other three conditions and after RN, respectively. Therefore, an active R-WU under hypoxia could be useful to elite rugby players, once it had attenuated the decline in tympanic temperature during a 15-min period after warm-up, improving jump, sprint and RSA performance.

Keywords: altitude; hypoxic training; jump; repeat sprint ability; sprint (search for similar items in EconPapers)
JEL-codes: I I1 I3 Q Q5 (search for similar items in EconPapers)
Date: 2020
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