Effects of Intermittent Hypoxic Training on Aerobic Capacity and Second Ventilatory Threshold in Untrained Men

Author:

Maciejczyk Marcin1ORCID,Palka Tomasz1ORCID,Wiecek Magdalena1ORCID,Szymura Jadwiga2ORCID,Kusmierczyk Justyna1ORCID,Bawelski Marek1,Masel Sebastian1,Szygula Zbigniew3ORCID

Affiliation:

1. Department of Physiology and Biochemistry, University of Physical Education, 31-571 Krakow, Poland

2. Department of Clinical Rehabilitation, University of Physical Education, 31-571 Krakow, Poland

3. Department of Nutrition and Sport Medicine, University of Physical Education, 31-571 Krakow, Poland

Abstract

The aim of study was to evaluate the effects of interval training performed in hypoxia on aerobic capacity and second ventilatory threshold in young, untrained men. Participants (n = 48) were randomly divided into a control group and two groups performing the same interval training (three times a week for 4 weeks) in normoxia (200 m asl) (NT) and in hypoxia (IHT) (3000 m asl, FIO2 = 14.4%). In the incremental test, maximal oxygen uptake (VO2max) was measured and the first (VT1) and second (VT2) ventilatory thresholds and the maximal power output (Pmax) were determined for each participant. The training workloads of the efforts corresponded to the workload at VT2 (effort) and VT1 (active recovery). Training in both normoxia and hypoxia significantly increased absolute VO2max (p = 0.02, ES = 0.51 and p = 0.002, ES = 0.47, respectively). In comparison to NT, only IHT significantly (p < 0.001; ES = 0.80) improved Pmax, as well as power at VT2 (p = 0.02; ES = 0.78). The applied IHT was effective in improving Pmax and power at VT2, which was not observed after training in normoxia.

Funder

Ministry of Education and Science

Publisher

MDPI AG

Subject

Fluid Flow and Transfer Processes,Computer Science Applications,Process Chemistry and Technology,General Engineering,Instrumentation,General Materials Science

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