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CURRENT ISSUETHE JOURNAL OF SPORTS MEDICINE AND PHYSICAL FITNESS

A Journal on Applied Physiology, Biomechanics, Preventive Medicine,
Sports Medicine and Traumatology, Sports Psychology


Indexed/Abstracted in: Chemical Abstracts, CINAHL, Current Contents/Clinical Medicine, EMBASE, PubMed/MEDLINE, Science Citation Index Expanded (SciSearch), Scopus
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The Journal of Sports Medicine and Physical Fitness 2016 Jul 21

A new dose of maximal-intensity interval training in hypoxia to improve body composition and haemoglobin and haematocrit levels: a pilot study

Marta CAMACHO-CARDEñOSA, Alba CAMACHO-CARDEñOSA, Ismael MARTíNEZ GUARDADO, Marta MARCOS SERRANO, Rafael TIMON, Guillermo OLCINA

Faculty of Sport Sciences, University of Extremadura, Cáceres, Spain

BACKGROUND: This pilot study had the aim to determine the effects of a new dose of maximal-intensity interval training in hypoxia in active adults.
METHODS: Twenty-four university student volunteers were randomly assigned to three groups: hypoxia group, normoxia group or control group. The eight training sessions consisted of 2 sets of 5 repeated sprints of 10 seconds with a recovery of 20 seconds between sprints and a recovery period of 10 minutes between sets. Body composition was measured following standard procedures. A blood sample was taken for an immediate haematocrit and haemoglobin concentration assessment. An all-out 3-ute test was performed to evaluate ventilation parameters and power.
RESULTS: Haemoglobin and haematocrit were significantly higher for the hypoxia group in Post- and Det- (p=0.01; p=0.03). Fat mass percentage was significantly lower for the hypoxia group in both assessments (p=0.05; p=0.05). The hypoxia group underwent a significant increase in mean power after the recovery period.
CONCLUSIONS: A new dose of 8 sessions of maximal-intensity interval training in hypoxia is enough to decrease the percentage of fat mass and to improve haemoglobin and haematocrit parameters and mean muscle power in healthy and active adults.

language: English


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