Comparison of the effect of intermittent hypoxic training vs. the live high, train low strategy on aerobic capacity and sports performance in cyclists in normoxia

The main objective of this research was to evaluate the efficacy of intermittent hypoxic training (IHT) on aiming performance and aerobic capacity in biathletes. Fourteen male biathletes were randomly divided into a hypoxia group (H) (n = 7), which trained three times per week in a normobaric hypoxic environment (FiO2 = 16.5%, 2000 m a.s.l.) with lactate threshold intensity (LT) determined in hypoxia, and a control group (C) (n = 7), which exercised under normoxic conditions with LT intensity determined in normoxia. The training program included three weekly microcycles, followed by three days of recovery. The main part of the interval workout consisted of four 7 min (1st week), 8 min (2nd week), or 9 min (3rd week) running bouts at treadmill separated by 2 minutes of active recovery. After the warm-up and during the rest between the bouts, the athletes performed aiming to the target in the standing position with a sporting rifle (20 s). The results showed that the IHT caused a significant (p<0.05) increase in retention time in the target at rest (RT9rest) by 14.4% in hypoxia, whereas RT postincremental test (RT9post) increased by 27.4% in normoxia and 26.7% in hypoxia. No significant changes in this variable were found in group C. Additionally, the capillary oxygen saturation at the end of the maximal effort (SO2capillary max) in hypoxia increased significantly (p<0.001) by ∼4% after IHT. The maximal workload during the incremental test (WRmax) in normoxia also increased significantly (p<0.001) by 6.3% after IHT. Furthermore, in absolute and relative values of VO2max in normoxia, there was a propensity (p<0.07) for increasing this value by 5% in group H. In conclusion, the main findings of this study showed a significant improvement in resting and postexercise aiming performance in normoxia and hypoxia. Furthermore, the results demonstrated beneficial effects of the IHT protocol on aerobic capacity of biathletes.

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7-day Simulated Intermittent Hypoxic Training Improves Maximal Aerobic Capacity In 400m Or 800m Runners

Medicine & Science in Sports & Exercise ◽

10.1249/01.mss.0000480418.99295.35 ◽

2015 ◽

Vol 47 ◽

pp. 829

Author(s):

Marie Oriishi ◽

Masahiro Hagiwara ◽

Kazunori Asaba ◽

Takashi Kawahara ◽

Yasuhiro Suzuki

Keyword(s):

Aerobic Capacity ◽

Maximal Aerobic Capacity ◽

Intermittent Hypoxic Training ◽

Hypoxic Training

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Effect of Intermittent Hypoxic Training Followed by Intermittent Hypoxic Exposure on Aerobic Capacity of Long Distance Runners

The Journal of Strength and Conditioning Research ◽

10.1519/jsc.0000000000001258 ◽

2016 ◽

Vol 30 (6) ◽

pp. 1708-1720 ◽

Cited By ~ 3

Author(s):

Fernanda P. Nakamoto ◽

Rafael K. Ivamoto ◽

Marilia dos S. Andrade ◽

Claudio A.B. de Lira ◽

Bruno M. Silva ◽

...

Keyword(s):

Aerobic Capacity ◽

Hypoxic Exposure ◽

Distance Runners ◽

Long Distance ◽

Intermittent Hypoxic Training ◽

Hypoxic Training

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Entrenamiento en hipoxia intermitente y rendimiento ciclista en triatletas / Intermittent hypoxic training and cycling performance in triathletes

Revista Internacional de Medicina y Ciencias de la Actividad Física y del Deporte ◽

10.15366/rimcafd2016.61.011 ◽

2016 ◽

Vol 61 (2016) ◽

Author(s):

D.J. Ramos-Campo ◽

F. Martínez ◽

P. Esteban ◽

J.A. Rubio-Arias ◽

J.F. Jiménez

Keyword(s):

Cycling Performance ◽

Intermittent Hypoxic Training ◽

Hypoxic Training

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Bemithyl Potentiates the Antioxidant Effect of Intermittent Hypoxic Training

Bulletin of Experimental Biology and Medicine ◽

10.1007/s10517-005-0442-8 ◽

2005 ◽

Vol 140 (2) ◽

pp. 190-193 ◽

Cited By ~ 2

Author(s):

I. V. Zarubina ◽

F. N. Nurmanbetova ◽

P. D. Shabanov

Keyword(s):

Antioxidant Effect ◽

Intermittent Hypoxic Training ◽

Hypoxic Training

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Effect of intermittent hypoxic training on orthostatic tolerance in humans before and after simulated microgravity

10.47183/mes.2020.022 ◽

2020 ◽

Author(s):

VP Katuntsev ◽

TV Sukhostavtseva ◽

AN Kotov ◽

MV Baranov

Keyword(s):

Orthostatic Intolerance ◽

Bed Rest ◽

Daily Basis ◽

Tilt Test ◽

Control Group ◽

Orthostatic Tolerance ◽

Pronounced Increase ◽

Intermittent Hypoxic Training ◽

Hypoxic Training ◽

Before And After

Reduced orthostatic tolerance (OT) is a serious concern facing space medicine. This work sought to evaluate the effects of intermittent hypoxic training (IHT) on OT in humans before and after 3 days of head-down bed rest (HDBR) used to model microgravity. The study was carried out in 16 male volunteers aged 18 to 40 years and included 2 series of experiments with 11-day and 21-day IHT administered on a daily basis. During the first IHT session, the concentration of oxygen in the inspired gas mixture was 10%; for other sessions it was adjusted to 9%. OT was assessed by a 20-minute-long orthostatic tilt test (OTT) conducted before and after HDBR. Before HDBR, orthostatic intolerance was observed in 3 participants, while after HDBR, it was observed in 9 of 16 volunteers (p < 0.05). During OTT conducted after HDBR, the heart rate (HR) exceeded control values by 26.8% (p < 0.01). Preexposure to any of the applied IHT regimens led to a reduction in the number of volunteers with orthostatic intolerance. After the 11-day IHT program, there was a less pronounced increase in HR during OTT before HDBR; with the extended IHT regimen, less pronounced changes were observed for HR, systolic, diastolic and mean blood pressure (BP). The increase in HR during OTT after HDBR was significantly lower in the group that had completed the 11-day IHT program, while BP remained stable. The changes in HR and systolic BP were less pronounced in the group that had completed the 21-day IHT program than in the control group (p < 0.05). Thus, IHT reduced the risk of orthostatic disorders and mitigated changes in cardiovascular parameters during the orthostatic test.

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