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 Are small-sided games an effective training methodology for improving fitness in hurling players? A comparative study of training methodologies

2017 ◽  
Vol 12 (5) ◽  
pp. 685-694 ◽  
Author(s):  
Shane Malone ◽  
Brian Hughes ◽  
Kieran D Collins
Keyword(s):  
Beneficial Effect ◽  
Aerobic Training ◽  
Team Sport ◽  
Running Economy ◽  
Continuous Training ◽  
Recovery Test ◽  
Negative Effect ◽  
Level 1 ◽  
Test Level ◽  
Level 2

The current investigation compared the effects of specific small-sided games training versus generic continuous aerobic training on team sport related exercise performances. Forty-eight hurling players (age: 25 ± 6.4 years; height: 180.2 ± 20.4 cm; mass: 80.5 ± 3.2 kg; [Formula: see text]: 58.78 ± 3.05 ml·kg·min−1) completed either traditional continuous aerobic training ( n = 24) or team sport-specific small-sided game training ( n = 24), consisting of 4 × 4 min with 3-min active recovery periods completed twice per week. The following outcomes were measured at baseline (pre) and after 10 weeks (post): maximum oxygen uptake (ml·kg−1·min−1), running economy (ml·kg−1·min−1), maximal aerobic speed (km·h−1), Yo-Yo intermittent recovery test level 1 (m), Yo-Yo intermittent recovery test level 2 (m), repeated sprint ability (RSA; s), linear sprint speed over 5, 10 and 20 m (s) and counter-movement jump performance (cm). Training load was quantified by heart rate and rating of perceived exertion during all training sessions with no significant difference between groups ( P = 0.12). Small-sided game ( P = 0.002; d = 1.72; likely beneficial) had a likely beneficial effect for improving running economy (ml·kg−1·min−1) in contrast to the unclear effect for continuous training ( P = 0.94; d = 0.21; unclear). Small-sided game ( P = 0.04; d = 0.80; likely beneficial) had a likely beneficial effect for changes in RSAb (s) and RSAt (s) with these being in contrast to the likely negative effect for continuous training on similar measures ( P = 0.12; d = −2.01; likely negative). Continuous training had a trivial ( P = 0.72; d = 0.30; trivial) effect on Yo-Yo intermittent recovery test level 1 (m) performance in contrast to the likely beneficial effect seen for small-sided game ( P = 0.002; d = 1.72; likely beneficial). Small-sided game ( P = 0.001; d = 1.69; likely beneficial) resulted in a likely beneficial effect for Yo-Yo intermittent recovery test level 2 (m) performance with a likely negative effect for continuous training ( P = 0.004; d = −2.40; likely negative). The current study suggests that small-sided games are a time efficient and effective method of improving fitness characteristics within hurling cohorts.

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.

Relationship of Training Load with High-intensity Running in Professional Soccer Players

2019 ◽  
Vol 40 (05) ◽  
pp. 336-343 ◽  
Author(s):  
Marcus Lee ◽  
Swarup Mukherjee
Keyword(s):  
High Intensity ◽  
Training Load ◽  
Soccer Players ◽  
Moderate Intensity ◽  
Professional Soccer ◽  
Repeated Sprint ◽  
Relationship Of ◽  
The Relationship ◽  
Test Level ◽  
Level 2

AbstractThis study determined the training load (TL) and its relationship with high-intensity running performance across the season in professional soccer players. The TL, YoYo Intermittent Recovery Test Level 2 (YYIR 2) and repeated sprint ability (RSA) were monitored in 29 players (age 26.2±3.8 years, height 173.6±5.6 cm, body mass 68.5±8.6 kg). In the mid in-season (MS), Lucia TRIMP (TRIMPL) was inversely correlated with YYIR 2 (r=−0.6, p<0.05), with total distance (TD), work-rate (WR), low-intensity distance (LID) and player load (PL) showing correlation with YYIR 2 (r=0.81, 0.77, 0.88, 0.67; p<0.05) in the late in-season (LS). In pre-season (PS), TD, WR and moderate-intensity distance (MID) were correlated with YYIR 2 (r=0.65, 0.80, 0.83, p<0.05), whereas in early in-season (ES), TD, WR, LID were correlated with YYIR 2 performance (r=0.58, 0.67, 0.55, p<0.05). There was no significant relationship (p>0.05) between TL and RSA. The findings showed the volume, intensity and types of TL accrued influences the relationship with physical performance that suggest the significance of phase-specific monitoring of TL for maximizing performance in soccer players.

scholarly journals Effects of 2-Week Exercise Training in Hypobaric Hypoxic Conditions on Exercise Performance and Immune Function in Korean National Cycling Athletes with Disabilities: A Case Report

2020 ◽  
Vol 17 (3) ◽  
pp. 861 ◽  
Author(s):  
Hun-Young Park ◽  
Won-Sang Jung ◽  
Jisu Kim ◽  
Hyejung Hwang ◽  
Sung-Woo Kim ◽  
...  
Keyword(s):  
Exercise Training ◽  
Immune Function ◽  
Exercise Performance ◽  
Time Trial ◽  
Hypoxic Conditions ◽  
Hypoxic Training ◽  
Before And After ◽  
Athletes With Disabilities ◽  
Trial Test ◽  
Lactate Levels

We aimed to evaluate the effects of a 2-week exercise training program in hypobaric hypoxic conditions on exercise performance and immune function in Korean national cycling athletes with disabilities. Six Korean national cycling athletes with disabilities participated in exercise training consisting of continuous aerobic exercise and anaerobic interval exercise in hypobaric hypoxic conditions. The exercise training frequency was 60 min (5 days per week for 2 weeks). Before and after the exercise training, exercise performance and immune function were measured in all athletes. Regarding the exercise performance parameters, the 3-km time trial significantly decreased and blood lactate levels after the 3-km time trial test significantly increased by exercise training in hypobaric hypoxic conditions. Regarding the oxygen-transporting capacity, significant differences were not observed. Regarding immune function, the number of leukocytes and natural killer cells significantly decreased and that of eosinophils, B cells, and T cells significantly increased. These results indicated that our 2-week hypoxic training showed the potential to improve exercise performance in Korean national disabled athletes. However, the effects of our hypoxic training method on immune function remained unclear.

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.

Recovery of Cycling Gross Efficiency After Time-Trial Exercise

2018 ◽  
Vol 13 (8) ◽  
pp. 1028-1033 ◽  
Author(s):  
Sjors Groot ◽  
Lars H.J. van de Westelaken ◽  
Dionne A. Noordhof ◽  
Koen Levels ◽  
Jos J. de Koning
Keyword(s):  
High Intensity ◽  
Time Course ◽  
Time Trial ◽  
Exercise Bout ◽  
Submaximal Exercise ◽  
High Intensity Exercise ◽  
Cycling Exercise ◽  
Gross Efficiency ◽  
Before And After ◽  
The Difference

Background: Research has shown that gross efficiency (GE) declines during high-intensity exercise, but the time course of recovery of GE after high-intensity exercise has not yet been investigated. Purpose: To determine the time course of the recovery of GE after time trials (TTs) of different lengths. Methods: Nineteen trained male cyclists participated in this study. Before and after TTs of 2000 and 20,000 m, subjects performed submaximal exercise at 55% of the power output attained at maximal oxygen uptake (PVO2max). The postmeasurement continued until 30 min after the end of the TT, during which GE was determined over 3-min intervals. The magnitude-based-inferences approach was used for statistical analysis. Results: GE decreased substantially during the 2000-m and 20,000-m TTs (−11.8% [3.6%] and −6.2% [4.0%], respectively). A most likely and very likely recovery of GE was found during the first half of the submaximal exercise bout performed after the 2000-m, with only a possible increase in GE during the first part of the submaximal exercise bout performed after the 20,000-m. After both distances, GE did not fully recover to the initial pre-TT values, as the difference between the pre-TT value and average GE value of minutes 26–29 was still most likely negative for both the 2000- and 20,000-m (−6.1% [2.8%] and −7.0% [4.5%], respectively). Conclusions: It is impossible to fully recover GE after TTs of 2000- or 20,000-m during 30 min of submaximal cycling exercise performed at an intensity of 55% PVO2max.

Yo-Yo Intermittent Recovery Test Level 2 and Its Relationship With Other Typical Soccer Field Tests in Female Collegiate Soccer Players

2017 ◽  
Vol 31 (10) ◽  
pp. 2667-2677 ◽  
Author(s):  
Robert G. Lockie ◽  
Farzad Jalilvand ◽  
Matthew R. Moreno ◽  
Ashley J. Orjalo ◽  
Fabrice G. Risso ◽  
...  
Keyword(s):  
Field Tests ◽  
Soccer Players ◽  
Recovery Test ◽  
Test Level ◽  
Level 2 ◽  
Soccer Field

The 30–15 Intermittent Fitness Test Versus the Yo-Yo Intermittent Recovery Test Level 1: Relationship and Sensitivity to Training

2014 ◽  
Vol 9 (3) ◽  
pp. 522-524 ◽  
Author(s):  
Martin Buchheit ◽  
Alireza Rabbani
Keyword(s):  
Interval Training ◽  
Recovery Test ◽  
Fitness Test ◽  
Large Correlation ◽  
Before And After ◽  
Level 1 ◽  
The Difference ◽  
High Intensity Interval ◽  
Physical Capacities ◽  
Test Level

The aim of the current study was to examine the relationship between performance of the Yo-Yo Intermittent Recovery Test Level 1 (Yo-YoIR1) and the 30–15 Intermittent Fitness Test (30-15IFT) and to compare the sensitivity of both tests to training. Fourteen young soccer players performed both tests before and after an 8-wk training intervention, which included 6 sessions/wk: 2 resistance training sessions, 2 high-intensity interval training sessions after technical training (4 sets of 3:30 min of generic running and small-sided games [4v4] during the first and second 4-wk periods, respectively [90–95% maximal HR], interspersed with 3 min at 60–70% maximal HR), and 2 tactical-only training sessions. There was a large correlation between 30-15IFT and Yo-YoIR1 (r = .75, 90% confidence limits [CL] 0.57;0.86). While within-test percentage changes suggested a greater sensitivity to training for the Yo-YoIR1 (+35%, 90%CL 24;45) than for the 30-15IFT (+7%; 4;10), these changes were similarly rated as almost certain (with chances for greater/similar/lower values after training of 100/0/0 for both tests) and moderate, ie, standardized difference, ES = +1.2 90%CL (0.9;1.5) for Yo-YoIR1 and ES = +1.1 (0.7;1.5) for 30-15IFT. The difference in the change between the 2 tests was clearly trivial (0/100/0, ES = –0.1, 90%CL –0.1;–0.1). Both tests might evaluate slightly different physical capacities, but their sensitivity to training is almost certainly similar. These results also highlight the importance of using standardized differences instead of percentage changes in performance to assess the actual training effect of an intervention.

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
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