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.

High-intensity interval training improves interventricular synchrony and strain under hypoxic stress in sedentary males

2020 ◽  
Vol 41 (Supplement_2) ◽  
Author(s):  
Y.C Huang ◽  
J.S Wang
Keyword(s):  
High Intensity ◽  
Interval Training ◽  
Moderate Intensity ◽  
Control Group ◽  
Funding Source ◽  
Peak Strain ◽  
High Intensity Interval Training ◽  
The Difference ◽  
High Intensity Interval ◽  
Longitudinal Strains

Abstract Background Interventricular interactions in increased RV afterload such as hypoxia stress, which affects both synchrony and function in an in-series effect as well as a parallel effect arising from leftward septal shift. Improved myocardial contractility is a critical circulatory adaptation to exercise training, however, the types of exercise that can improve interventricular synchrony under hypoxic environment have not yet been established. Purpose This study investigates how high-intensity interval training (HIIT) and moderate-intensity continuous training (MICT) influence on the interventricular synchrony in response to normobaric hypoxia in sedentary men. Methods Fifty-four sedentary males were randomized to perform HIIT (3-minute intervals at 40% and 80% VO2peak, n=18), MICT (sustained 60% VO2peak, n=18) for 30 minutes/day, 5 days/week for 6 weeks and the control group (CTL, n=18). Synchrony measurements at apical 4-chamber view including (1) intra-delay, the difference in time to peak strain (TS) between segmental septal-to-lateral ventricular or atrial walls, and (2) inter-delay, the difference in TS between RV or RA free wall and LV or LA lateral wall. The data were acquired by 2-dimensional speckle tracking echocardiography at rest under hypoxic condition (12% FIO2, simulated an altitude of 4,500 m) before and after the interventions. Results HIIT had significantly elevated radial and longitudinal strains in both LA and LV (p<0.05). As the results showed, HIIT was superior than MICT in improvement of longitudinal intra-delay of LV; furthermore, only HIIT simultaneously ameliorated both radial and longitudinal synchrony at apex. Although the HIIT enhanced intraventricular synchrony in both motions, whereas the interventricular synchrony deteriorated at radial motion. In atrium synchrony, although both groups augmented the intra-LA synchrony, however, only HIIT reduced the inter-delay between LA and RA at the roof motion. LV end-systolic volume (ESV) significantly correlated with the longitudinal inter-delay of ventricle (r=−0.53, p<0.05), whereas the LV end-diastolic volume (EDV) correlated with the inter-delay of atrium in roof motion (r=0.40, p<0.05). Conclusion We found differences between HIIT and MICT in segmental intra- and inter- synchrony. HIIT enhanced both ventricular or atrial synchrony, and further increased the EDV coupled with decreased ESV. These findings give new insight into cardiac adaptation to difference endurance training and the long-term impact of such changes warrants future study in cardiac diseases. Funding Acknowledgement Type of funding source: Public grant(s) – National budget only. Main funding source(s): National Science Council of Taiwan

scholarly journals High-intensity Interval Training Improves Inflammatory Mediators in Obese Women: Based on the Study of the UCP2 Ala55Val Gene

2021 ◽  
Vol 9 (A) ◽  
pp. 871-875
Author(s):  
Susiana Candrawati ◽  
Emy Huriyati ◽  
Zaenal Muttaqien Sofro ◽  
Lantip Rujito ◽  
Aulia Nury Faza ◽  
...  
Keyword(s):  
Body Weight ◽  
Inflammatory Mediators ◽  
High Intensity ◽  
Interval Training ◽  
T Test ◽  
Wilcoxon Test ◽  
Obese Women ◽  
High Intensity Interval Training ◽  
Before And After ◽  
High Intensity Interval

Background: Increased inflammatory mediators in obesity are associated with metabolic syndrome. Exercise is an effective effort to reduce the incidence of obesity. The High-Intensity Interval Training (HIIT) program is an exercise which include combination of high-intensity exercise and rest periods. The decrease in body fat levels due to physical training will further affect inflammatory mediators such as IL6 and TNFα. Besides training factor, genetic also play a role on obesity. One of the genes that influence obesity is the UCP2 Ala55Val gene. Objectives: This research aims to see the effect of HIIT on the levels of inflammatory mediators in obese patients based on the study of the Ala55Val UCP2 gene. Methods: This study was a Quasi-Experimental Pre and Post Design Without Control Group. Thirty obese women (BMI≥25 kg/m2) were given High-Intensity Interval Training (HIIT) as an intervention by comparing the data before and after the intervention. The training intervention was conducted for 12 weeks, consisting of two weeks of adaptation and ten weeks of HIIT intervention. The body weight, BMI and inflammatory mediators (TNFα and IL 6) before and after the intervention were analyzed using the Dependent T-Test and Wilcoxon Test as a nonparametric test. Independent T-Test and Mann Whitney test used to determine the effect of the UCP2 Ala55Val gene on changes in body weight, BMI and the inflammatory mediator. The test results were considered significantly different if p<0.05. Results: Bivariate analysis using Dependent T-Test showed that HIIT significantly improved Body Weight, BMI and IL6 with p=0.0001. Wilcoxon Test showed that HIIT significantly improved TNFα with p=0.0001. Independent T-Test showed no difference in body weight (p=0.719), BMI (p=0.663) and TNFα (p=0.264) improvement in the two genotypes of the UCP2 Ala55Val gene. Mann Whitney Test showed no difference in IL6 (p=0.288) improvement in the two genotypes of the UCP2 Ala55Val gene. Conclusion: The research concluded that the 12-week HIIT interventions improved inflammatory mediators by reducing IL6 and TNFα in obese women. There was no effect of genetic variation on the response to training intervention.

scholarly journals Concurrent Validity of a Rugby-Specific Yo-Yo Intermittent Recovery Test (Level 1) for Assessing Match-Related Running Performance

2021 ◽  
Vol 35 (1) ◽  
pp. 176-182 ◽  
Author(s):  
Nick Dobbin ◽  
Jamie Highton ◽  
Samantha L. Moss ◽  
Richard Hunwicks ◽  
Craig Twist
Keyword(s):  
Concurrent Validity ◽  
Running Performance ◽  
Recovery Test ◽  
Level 1 ◽  
Test Level

Immediate and late acute effect of moderate continuous and high intensity interval training on hypertension stage I: case report

2021 ◽  
Vol 1 (4) ◽  
pp. 50-56
Author(s):  
Ana Luísa Freitas Siqueira ◽  
Gabriela Souza Faria ◽  
Pedro De Oliveira Neto ◽  
Maria Paula Fabrício de Andrade ◽  
Bruna Pereira Molina Cruz ◽  
...  
Keyword(s):  
Blood Pressure ◽  
Physical Training ◽  
High Intensity ◽  
Interval Training ◽  
Hypotensive Effect ◽  
Acute Effect ◽  
High Intensity Interval Training ◽  
Before And After ◽  
High Intensity Interval ◽  
Training Modalities

Physical training is used in the control of arterial hypertension (AH), especially in patients with higher levels of blood pressure (BP). However, there are still few studies on the effects of physical training on AH in less advanced stages of the disease. The aim of the present study was to assess the immediate and late acute effects of continuous moderate physical training (CMT) and high intensity interval training (HIIT) in patients with mild AH, and to assess which training method induces a greater hypotensive effect. A female patient, 43 years old, sedentary, diagnosed with mild AH (stage 1), taking Losartana 50 mg twice a day was studied. She underwent one CMT and one HIIT session, one week apart. BP measurements were taken before and after each session, as well as 24 hours before and after the sessions. After the physical training sessions, we observed a drop in the patient's BP that lasted up to 60 minutes, and a reduction in blood pressure levels on the day after the training. We conclude that both training modalities were efficient in reducing the BP of the patient with mild acute immediate and delayed hypertension.

scholarly journals Technical feasibility of constant-load and high-intensity interval training for cardiopulmonary conditioning using a re-engineered dynamic leg press

2019 ◽  
Vol 1 (1) ◽  
Author(s):  
Farouk Chrif ◽  
Tobias Nef ◽  
Kenneth J Hunt
Keyword(s):  
High Intensity ◽  
Ventilatory Threshold ◽  
Interval Training ◽  
Constant Load ◽  
Work Rate ◽  
High Intensity Interval Training ◽  
Leg Press ◽  
Cardiopulmonary Exercise ◽  
The Difference ◽  
High Intensity Interval

Abstract Background Leg-press devices are one of the most widely used training tools for musculoskeletal strengthening of the lower-limbs, and have demonstrated important cardiopulmonary benefits for healthy and patient populations. Further engineering development was done on a dynamic leg-press for work-rate estimation by integrating force and motion sensors, power calculation and a visual feedback system for volitional work-rate control. This study aimed to assess the feasibility of the enhanced dynamic leg press for cardiopulmonary exercise training in constant-load training and high-intensity interval training. Five healthy participants aged 31.0±3.9 years (mean ± standard deviation) performed two cardiopulmonary training sessions: constant-load training and high-intensity interval training. Participants carried out the training sessions at a work rate that corresponds to their first ventilatory threshold for constant-load training, and their second ventilatory threshold for high-intensity interval training. Results All participants tolerated both training protocols, and could complete the training sessions with no complications. Substantial cardiopulmonary responses were observed. The difference between mean oxygen uptake and target oxygen uptake was 0.07±0.34 L/min (103 ±17%) during constant-load training, and 0.35±0.66 L/min (113 ±27%) during high-intensity interval training. The difference between mean heart rate and target heart rate was −7±19 bpm (94 ±15%) during constant-load training, and 4.2±16 bpm (103 ±12%) during high-intensity interval training. Conclusions The enhanced dynamic leg press was found to be feasible for cardiopulmonary exercise training, and for exercise prescription for different training programmes based on the ventilatory thresholds.

scholarly journals Effects of high-intensity training on muscle lactate transporters and postexercise recovery of muscle lactate and hydrogen ions in women

2008 ◽  
Vol 295 (6) ◽  
pp. R1991-R1998 ◽  
Author(s):  
David Bishop ◽  
Johann Edge ◽  
Claire Thomas ◽  
Jacques Mercier
Keyword(s):  
Relative Abundance ◽  
High Intensity ◽  
Vastus Lateralis ◽  
Interval Training ◽  
Hydrogen Ions ◽  
Muscle Lactate ◽  
High Intensity Training ◽  
Before And After ◽  
High Intensity Interval

The purpose of this study was to investigate the effects of high-intensity interval training (3 days/wk for 5 wk), provoking large changes in muscle lactate and pH, on changes in intracellular buffer capacity (βmin vitro), monocarboxylate transporters (MCTs), and the decrease in muscle lactate and hydrogen ions (H+) after exercise in women. Before and after training, biopsies of the vastus lateralis were obtained at rest and immediately after and 60 s after 45 s of exercise at 190% of maximal O2 uptake. Muscle samples were analyzed for ATP, phosphocreatine (PCr), lactate, and H+; MCT1 and MCT4 relative abundance and βmin vitro were also determined in resting muscle only. Training provoked a large decrease in postexercise muscle pH (pH 6.81). After training, there was a significant decrease in βmin vitro (−11%) and no significant change in relative abundance of MCT1 (96 ± 12%) or MCT4 (120 ± 21%). During the 60-s recovery after exercise, training was associated with no change in the decrease in muscle lactate, a significantly smaller decrease in muscle H+, and increased PCr resynthesis. These results suggest that increases in βmin vitro and MCT relative abundance are not linked to the degree of muscle lactate and H+ accumulation during training. Furthermore, training that is very intense may actually lead to decreases in βmin vitro. The smaller postexercise decrease in muscle H+ after training is a further novel finding and suggests that training that results in a decrease in H+ accumulation and an increase in PCr resynthesis can actually reduce the decrease in muscle H+ during the recovery from supramaximal exercise.

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 Increase VO2Max Badminton Athletes Use exercises Footwork with Method HIIT (High Intensity Interval Training)

2019 ◽  
Author(s):  
donie
Keyword(s):  
Data Collection ◽  
High Intensity ◽  
Experimental Approach ◽  
Interval Training ◽  
Training Method ◽  
High Intensity Interval Training ◽  
Vo2 Max ◽  
Purposive Sampling ◽  
Fitness Test ◽  
High Intensity Interval

ObjectivesThis study aims to to determine the effect of exercise footwork HIIT with a method to increase in VO2 max in badminton athletes.MethodsThis study used an experimental approach to see the effect of footwork practice with HIIT (High-Intensity Interval Training) method of VO2Max. Population of this research is athletes badminton UNP which amounted to 38 people and technique of sampling by using purposive sampling that is eligible athlete son amounted 35 people. Data collection in this study used fitness test (bleep test) to measure Vo2Max.ResultsThe results of this study indicate that there is influence of Footwork training with HIIT (High-Intensity Interval Training) method to increase Vo2max in badminton athletesConclusionsFootwork as one aspect of the techniques in badminton game if manipulated in such a way by using the principles of interval training, especially HIIT (High-Intensity Interval Training) can increase VO2max in badminton athletes.

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