Haematological responses to repeated sprints in hypoxia across different sporting modalities

Journal article


Camacho-Cardenosa, Marta, Camacho-Cardenosa, Alba, Kemp, Justin, Brazo-Sayavera, Javier, Timon, Rafael and Olcina, Guillermo. (2022). Haematological responses to repeated sprints in hypoxia across different sporting modalities. Research in Sports Medicine. 30(5), pp. 529-539. https://doi.org/10.1080/15438627.2021.1917403
AuthorsCamacho-Cardenosa, Marta, Camacho-Cardenosa, Alba, Kemp, Justin, Brazo-Sayavera, Javier, Timon, Rafael and Olcina, Guillermo
Abstract

The aim was to determine the effects of repeated-sprint training in hypoxia on haematocrit and haemoglobin in different sporting modalities. Seventy-two participants were randomly allocated to Active-Repeated sprint in hypoxia (A-RSH, n= 8); Active-Repeated sprint in normoxia (A-RSN, n= 8); Active-Control (A-CON, n= 8); Team Sports-RSH (T-RSH, n= 8); Team Sports-RSN (T-RSN, n= 8); Team Sports-Control (T-CON, n= 8); Endurance-RSH (E-RSH, n= 8); Endurance-RSN (E-RSN, n= 8); Endurance-Control (E-CON, n= 8). Sessions consisted of two sets of five sprints of 10 swith recovery of 20 sbetween sprints and 10 min between sets. Blood samples for haematocrit and haemoglobin concentrations were obtained before and after, and 2 weeks after cessation. Haematocrit and haemoglobin were lower for the E-RSN group following 2 weeks of cessation of protocol compared with E-RSH (p = 0.035) and E-CON (p = 0.045). Haematocrit of the A-RSH group was higher compared with baseline (p = 0.05) and Post (p = 0.05). Similarly, the T-RSH group demonstrated increases in haematocrit following 2 weeks of cessation compared with Post (p = 0.04). Repeated Sprint Training in Hypoxia had different haematological effects depending on sporting modality.

Keywordsaltitude; haemoglobin mass; haematocrit; sport
Year2022
JournalResearch in Sports Medicine
Journal citation30 (5), pp. 529-539
PublisherRoutledge
ISSN1543-8627
Digital Object Identifier (DOI)https://doi.org/10.1080/15438627.2021.1917403
PubMed ID33870812
Scopus EID2-s2.0-85104725498
Page range529-539
Publisher's version
License
All rights reserved
File Access Level
Controlled
Output statusPublished
Publication dates
Online18 Apr 2021
Publication process dates
Accepted07 Apr 2021
Deposited16 Nov 2021
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