scholarly journals Effect of intermittent hypoxic intervention on aerobic and anaerobic performance of the elite athletes

2021 ◽  
Vol 8 (8) ◽  
pp. 460-464
Author(s):  
Ali Eroğlu ◽  
Taner Aydın
Keyword(s):  
Elite Athletes ◽  
Venous Blood ◽  
Anaerobic Performance ◽  
Intermittent Hypoxic Training ◽  
Hypoxic Training ◽  
Before And After ◽  
Group 5 ◽  
Statistical Change ◽  
Aerobic And Anaerobic ◽  
Hypoxic Group

Objective: The use of hypoxic training has increased to improve the performance of endurance athletes in recent years. Due to not having the suitable conditions and environment for each athlete and team, intermittent hypoxic training has been noted. The purpose of this study is to investigate the effect of intermittent hypoxic training on aerobic and anaerobic performance of elite athletes. Materials and Methods: A total of 40 elite distance athletes were taken into our study and divided into two groups as hypoxia and normoxia. While using the intermittent intervention for the hypoxic group 5 minutes intervals for a total of 1 hour per day, 3 days per week for a-4 week period, the same normoxic training protocol was used for the normoxic group. Aerobic and anaerobic performance parameters were measured with venous blood samples of the athletes in the first three days before and after hypoxic intervention. Results: When the hypoxia and normoxia groups were evaluated before and after intermittent hypoxia, there was no statistically  change in aerobic and anaerobic performance values (p>0.05). Conclusion: We observed that there was not a statistical change of intermittent hypoxic intervention for the performances of hypoxic group. However, the more dose and the duration of hypoxic training, the more amount of performance gain can be achieved.

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

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.

Team-Sport Athletes’ Improvement of Performance on the Yo-Yo Intermittent Recovery Test Level 2, but Not of Time-Trial Performance, With Intermittent Hypoxic Training

2016 ◽  
Vol 11 (1) ◽  
pp. 15-21 ◽  
Author(s):  
Mathew W.H. Inness ◽  
François Billaut ◽  
Robert J. Aughey
Keyword(s):  
Time Course ◽  
Time Trial ◽  
Team Sport ◽  
Training Load ◽  
Recovery Test ◽  
Intermittent Hypoxic Training ◽  
Hypoxic Training ◽  
Before And After ◽  
Test Level ◽  
Level 2

Purpose:To determine the time course for physical-capacity adaptations to intermittent hypoxic training (IHT) in team-sport athletes and the time course for benefits remaining after IHT.Methods:A pre–post parallel-groups design was employed, with 21 Australian footballers assigned to IHT (n = 10) or control (CON; n = 11) matched for training load. IHT performed eleven 40-min bike sessions at 2500-m altitude over 4 wk. Yo-Yo Intermittent Recovery Test level 2 (Yo-Yo IR2) was performed before; after 3, 6, and 11 IHT sessions; and 30 and 44 d after IHT. Repeated time trials (2- and 1-km TTs, with 5 min rest) were performed before, after, and 3 wk after IHT. Hemoglobin mass (Hbmass) was measured in IHT before and after 3, 6, 9, and 11 sessions.Results:Baseline Yo-Yo IR2 was similar between groups. After 6 sessions, the change in Yo-Yo IR2 in IHT was very likely higher than CON (27% greater change, effect size 0.77, 90% confidence limits 0.20;1.33) and likely higher 1 d after IHT (23%, 0.68, 0.05;1.30). The IHT group’s change remained likely higher than CON 30 d after IHT (24%, 0.72, 0.12;1.33) but was not meaningfully different 44 d after (12%, 0.36, –0.24;0.97). The change in 2-km TT performance between groups was not different throughout. For 1-km TT, CON improved more after IHT, but IHT maintained performance better after 3 wk. Hbmass was higher after IHT (2.7%, 0.40, –0.40;1.19).Conclusion:Short-duration IHT increased Yo-Yo IR2 compared with training-load-matched controls in 2 wk. An additional 2 wk of IHT provided no further benefit. These changes remained until at least 30 d posttraining. IHT also protected improvement in 1-km TT.

scholarly journals Hematological and Running Performance Modification of Trained Athletes after Reverse vs. Block Training Periodization

2020 ◽  
Vol 17 (13) ◽  
pp. 4825 ◽  
Author(s):  
Juan Pablo Gómez Martín ◽  
Vicente Javier Clemente-Suárez ◽  
Domingo Jesús Ramos-Campo
Keyword(s):  
Ventilatory Threshold ◽  
Training Programs ◽  
Anaerobic Performance ◽  
Effective Strategy ◽  
Countermovement Jump ◽  
Jump Performance ◽  
Running Performance ◽  
Before And After ◽  
Aerobic And Anaerobic ◽  
Hematological Values

The aim of the present study was to analyze the effect of block (BP) and a reverse training periodization (RP) in the hematological and running performance of amateur trained athletes. Modifications in hematological, aerobic, and anaerobic running performance and countermovement jump before and after twelve weeks of BP vs. RP training programs were analyzed in 16 trained athletes (eight males: 40.0 ± 6.2 years; 179.2 ± 12.8 cm; 73.8 ± 12.2 kg; and eight females: 34.2 ± 4.1 years; 163.4 ± 9.6 cm; 57.0 ± 11.0 kg). A significant decrease in heart rate (HR) at ventilatory threshold (VT1) (p = 0.031; ES = 1.40) was observed in RP without changes in BP. In addition, RP increased significantly VO2max (p = 0.004; ES = 0.47), speed at VO2max (p = 0.001; ES = 1.07), HR at VT2 (p < 0.001; ES = 1.32) and VT1 (p = 0.046; ES = 0.57), while BP improved VO2max (p = 0.004; ES = 0.51), speed at VO2max (p = 0.016; ES = 0.92), and HR at VT2 (p = 0.023; ES = 0.78). In addition, only RP increased anaerobic performance in a running-based anaerobic sprint test (RAST) (mean sprint: p = 0.009; ES = 0.40, best sprint: p = 0.019; ES = 0.30 and total time: p = 0.009; ES = 0.40). Moreover, both types of training periodization proposed in this study maintained hematological values and efficiently improved jump performance (p = 0.044; ES = 0.6) in RP and p = 0.001; ES = 0.75 in BP). Therefore, twelve weeks of either RP or BP is an effective strategy to increase jump and aerobic running performance maintaining hematological values, but only RP increases anaerobic running performance.

Effect of intermittent hypoxic training on 20 km time trial and 30 s anaerobic performance

2010 ◽  
Vol 20 (4) ◽  
pp. 651-661 ◽  
Author(s):  
M. J. Hamlin ◽  
H. C. Marshall ◽  
J. Hellemans ◽  
P. N. Ainslie ◽  
N. Anglem
Keyword(s):  
Time Trial ◽  
Anaerobic Performance ◽  
Intermittent Hypoxic Training ◽  
Hypoxic Training

Human hypoxic ventilatory response with blood dopamine content under intermittent hypoxic training

1999 ◽  
Vol 77 (12) ◽  
pp. 967-973 ◽  
Author(s):  
T V Serebrovskaya ◽  
I N Karaban ◽  
E E Kolesnikova ◽  
T M Mishunina ◽  
L A Kuzminskaya ◽  
...  
Keyword(s):  
Intermittent Hypoxia ◽  
Ventilatory Response ◽  
Piecewise Linear ◽  
Piecewise Linear Approximation ◽  
Hypoxic Ventilatory Response ◽  
Intermittent Hypoxic Training ◽  
Healthy Humans ◽  
Hypoxic Training ◽  
Before And After ◽  
Dopa Concentration

Adaptation to intermittent hypoxia can enhance a hypoxic ventilatory response (HVR) in healthy humans. Naturally occurring oscillations in blood dopamine (DA) level may modulate these responses. We have measured ventilatory response to hypoxia relative to blood DA concentration and its precursor DOPA before and after a 2-week course of intermittent hypoxic training (IHT). Eighteen healthy male subjects (mean 22.8 ± 2.1 years old) participated in the study. HVRs to isocapnic, progressive, hypoxic rebreathing were recorded and analyzed using piecewise linear approximation. Rebreathing lasted for 5-6 min until inspired O2 reached 8 to 7%. IHT consisted of three identical daily rebreathing sessions separated by 5-min breaks for 14 consecutive days. Before and after the 2-week course of IHT, blood was sampled from the antecubital vein to measure DA and DOPA content. The investigation associated pretraining high blood DA and DOPA values with low HVR (r = -0.66 and -0.75, respectively), elevated tidal volume (r = 0.58 and 0.37) and vital capacity (r = 0.69 and 0.58), and reduced respiratory frequency (r = -0.89 and -0.82). IHT produced no significant change in ventilatory responses to mild hypoxic challenge (PetO2 from 110 to 70-80 mmHg; 1 mmHg = 133.3 Pa) but elicited a 96% increase in ventilatory response to severe hypoxia (from 70-80 to 45 mmHg). Changes in HVRs were not accompanied by statistically significant shifts in blood DA content (24% change), although a twofold increase in DOPA concentration was observed. Individual subject's changes in DA and DOPA content were not correlated with HVR changes when these two parameters were evaluated in relation to the IHT. We hypothesize that DA flowing to the carotid body through the blood may provoke DA autoreceptor-mediated inhibition of endogenous DA synthesis-release, as shown in our baseline data.Key words: hypoxic ventilatory response, dopamine, intermittent hypoxia.

scholarly journals Intermittent hypoxic training improves anaerobic performance in competitive swimmers when implemented into a direct competition mesocycle

PLoS ONE ◽  
2017 ◽  
Vol 12 (8) ◽  
pp. e0180380 ◽  
Author(s):  
Miłosz Czuba ◽  
Robert Wilk ◽  
Jakub Karpiński ◽  
Małgorzata Chalimoniuk ◽  
Adam Zajac ◽  
...  
Keyword(s):  
Anaerobic Performance ◽  
Intermittent Hypoxic Training ◽  
Hypoxic Training ◽  
Direct Competition ◽  
Competitive Swimmers

Influence of a Carbohydrate-Electrolyte Beverage on Performance and Blood Homesstasis during Recovery from Football

1991 ◽  
Vol 1 (2) ◽  
pp. 178-191 ◽  
Author(s):  
David Criswell ◽  
Scott Powers ◽  
John Lawler ◽  
John Tew ◽  
Stephen Dodd ◽  
...  
Keyword(s):  
Venous Blood ◽  
Anaerobic Exercise ◽  
Football Players ◽  
Anaerobic Performance ◽  
High School Football ◽  
Blood Samples ◽  
Glucose Polymer ◽  
Before And After ◽  
Maximal Effort ◽  
Percent Decrease

This study compared the efficacy of a 7% glucose polymer beverage containing electrolytes (GP) versus a nonnutrient, nonelectrolyte placebo (P) in maintaining blood homeostasis during recovery from football and determined whether consumption of the GP beverage improved anaerobic performance immediately after football competition when compared with the placebo. Forty-four high school football players participated in a 50-play scrimmage designed to simulate game conditions. At each of six periods before and during the scrimmage, players consumed 170 ml of the GP or P beverage. Eight maximal-effort 40-yd sprints (40-sec rest intervals) were performed before and after the scrimmage to assess the decrement in anaerobic performance from the scrimmage. Venous blood samples were drawn before and after the scrimmage and analyzed. The pre- to postscrimmage differences in mean and peak sprint velocities did not differ between treatments, nor did body weight and plasma. In contrast, the percent decrease in plasma volume was significantly greater in the P group. Postscrimmage increases in glucose and insulin were greater in the GP group. These data suggest that CHO-electrolyte drinks do not prevent a decline in anaerobic performance when compared to water, but a CMO-electrolyte drink is more effective in maintaining PV than water during recovery from anaerobic exercise.

scholarly journals The Effects of Intermittent Hypoxic Training on Anaerobic and Aerobic Power in Boxers

2020 ◽  
Vol 17 (24) ◽  
pp. 9361
Author(s):  
Tadeusz Ambroży ◽  
Marcin Maciejczyk ◽  
Andrzej T. Klimek ◽  
Szczepan Wiecha ◽  
Arkadiusz Stanula ◽  
...  
Keyword(s):  
Peak Power ◽  
Anaerobic Power ◽  
Training Session ◽  
Endurance Performance ◽  
Peak Oxygen Uptake ◽  
Control Group ◽  
Intermittent Hypoxic Training ◽  
Time To Peak ◽  
Hypoxic Training ◽  
Before And After

Background: The aim of the study was to evaluate the effects of intermittent hypoxic training (IHT) on anaerobic and aerobic fitness in elite, national boxers. Methods: The study was conducted over a period of 6 weeks. It comprised 30 national championship boxers, divided into 2 groups: the experimental and control. Both groups performed the same boxing training twice a day (morning and afternoon training). In the afternoon, the experimental group performed training under normobaric conditions in a hypoxic chamber (IHT), while the control group undertook exercise in standard normoxic conditions. In both groups, before and after the 6-week programme, basic anthropometric indices as well as anaerobic (Wingate Test) and aerobic (graded test) fitness were assessed. Results: There was a significant increase in anaerobic peak power (988.2 vs. 1011.8 W), mean anaerobic power (741.1 vs. 764.8 W), total work (22.84 vs. 22.39 kJ), and a decrease in fatigue index (20.33 vs. 18.6 W·s−1) as well as time to peak power (5.01 vs. 4.72 s). Such changes were not observed in the control group. In both groups, no significant changes in endurance performance were noted after the training session – peak oxygen uptake did not significantly vary after IHT. Conclusions: Our results have practical application for coaches, as the IHT seems to be effective in improving anaerobic performance among boxers.

scholarly journals PO-093 Effects of 6-week hypoxic exercise on aerobic capacity-related proteins in overweight/obese women

2018 ◽  
Vol 1 (3) ◽  
Author(s):  
Jun Chang ◽  
Jianmin Cao ◽  
Yue Yu ◽  
Xu Zhang
Keyword(s):  
Heart Rate ◽  
Exercise Intervention ◽  
Venous Blood ◽  
Intervention Group ◽  
Target Heart Rate ◽  
Change Rate ◽  
Overweight Women ◽  
Significant Difference ◽  
Before And After ◽  
Hypoxic Group

Objective To explore the effects of hypoxic and normoxic exercise on hemoglobin (Hb), erythropoietin (EPO), hypoxia-inducible factor 1α (HIF1α) and vascular endothelial growth factor (VEGF) in overweight women. Methods This study enrolled 40 female overweight/obese subjects, age is among 18-47 years old, with no abnormal physical examination. The overweight standard is BMI ≥ 24, and the obesity standard is BMI ≥ 28. All subjects were paired according to body weight, divided into hypoxia group and normoxia group, doing 6 weeks of exercise intervention, 3 times a week, every next day one time. The exercise intervention includes 30 minutes of strength training and 30 minutes of endurance training. There are 5 minutes of warm up before training and 5 minutes cool down after the training. Strength training uses the device as a dumbbell. The training content consists of 8 movements, there are dead lift, upright row, squat, shoulder press, calf Jump, advance junge, biceps curl and triceps extension, and the weight is 12RM. 2 sets for each action, rest between sets is 30s. Endurance training uses a treadmill with a slope of 0°, and the speed is adjusted according to the target heart rate interval. The calculation method of the target heart rate interval is (220-age)×60%～(220-age)×70%. Among them, the hypoxic group is equipped with a suction-type atmospheric hypoxic device, which moves with low-oxygen environment, and the oxygen content of the inhaled mixed gas is 16%; the normoxic group moves with normal oxygen environment. Nutritional education was given to all subjects prior before the start of exercise intervention, but diet was not restricted during the intervention. Fasting venous blood was taken before and after Fasting venous blood before and after exercise intervention intervention, and Hb, EPO, HIF1α, and VEGF were detected. All the test results were expressed by mean±standard deviation (x±SD). The data between two groups were compared by non-parametric Mann-Whitney U test. The intra-group data were compared using a nonparametric Wilcoxon match for the symbol level test, with a significance level of P < 0.05 and a very significant level of P < 0.01. Results After the intervention, the Hb level in the hypoxic group was increased, but there was no significant difference compared with the pre-intervention group (P>0.05). There was no significant difference in the Hb change rate between the hypoxic group and the normoxic group (P>0.05). The EPO level in the hypoxic group was significantly increased, and there was a statistically significant difference compared with the pre-intervention group (P<0.01). There was no significant change in the EPO level in the normoxic group (P>0.05). The EPO change rate in the hypoxic group was compared with the normoxic group. There was no statistical difference (P>0.05). The level of HIF1α in the hypoxic group was significantly higher than that before the intervention (P<0.01). The level of HIF1α in the normoxic group was significantly lower than that before the intervention (P<0.01). The rate of change of HIF1α in the oxygen group was statistically different from that in the normox group (P<0.01). The level of VEGF in the hypoxic group was increased, but the level of VEGF in the normoxic group was decreased, but there was no significant difference compared with the pre-intervention group (P>0.05). There was no significant difference in the rate of VEGF in the hypoxic group compared with the normoxic group(P>0.05). Conclusions Compared with normotensive exercise, 6-week exercise increased the levels of Hb and EPO in overweight women, but the difference between hypoxia and normoxia was not significant. The level of HIF1α in the hypoxic group was increased, and the level of HIF1α in the normoxic group was decreased. This index was significantly affected by hypoxia. The level of VEGF in the hypoxic group was increased, and the level of VEGF in the normoxic group was decreased, but the effects of hypoxia and exercise were not obvious.

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