scholarly journals High-Intensity Interval Training Is Effective at Increasing Exercise Endurance Capacity and Is Well Tolerated by Adults with Cystic Fibrosis

2020 ◽  
Vol 9 (10) ◽  
pp. 3098
Author(s):  
Abbey Sawyer ◽  
Vinicius Cavalheri ◽  
Sue Jenkins ◽  
Jamie Wood ◽  
Nola Cecins ◽  
...  
Keyword(s):  
Cystic Fibrosis ◽  
Interval Training ◽  
Cycle Ergometry ◽  
Work Rate ◽  
Control Group ◽  
High Intensity Interval Training ◽  
Low Volume ◽  
High Intensity Interval ◽  
Ergometry Test ◽  
Experimental Group

Background: To optimize outcomes in people with cystic fibrosis (CF), guidelines recommend 30 to 60 min of moderate-intensity aerobic exercise on most days. Accumulating this volume of exercise contributes importantly to the substantial treatment burden associated with CF. Therefore, the main aim of this study was to investigate the effects of low-volume high-intensity interval training (HIIT) on exercise capacity in people with CF. Methods: This randomized controlled trial included people with CF aged ≥15 years, who were allocated to either eight weeks of thrice-weekly 10-min sessions of HIIT (experimental group) or eight weeks of weekly contact (control group). Before and after the intervention period, participants completed measurements of time to symptom limitation (Tlim) during a constant work rate cycle ergometry test (primary outcome), and maximal work rate (Wmax) during a ramp-based cycle ergometry test and health-related quality of life (HRQoL). Results: Fourteen participants (median (IQR) age 31 (28, 35) years, forced expiratory volume in 1 second (FEV1) 61 (45, 80) % predicted) were included (seven in each group). Compared to the control group, participants in the experimental group demonstrated a greater magnitude of change in Tlim, Wmax (p = 0.017 for both) and in the physical function domain of HRQoL (p = 0.03). No other between-group differences were demonstrated. Mild post-exercise muscle soreness was reported on a single occasion by four participants. Overall, participants attended 93% of all HIIT sessions. Discussion: Eight weeks of low-volume (i.e., 30-min/week) HIIT produced gains in exercise capacity and self-reported physical function and was well tolerated by people with CF.

High-Intensity Interval Training for Improvement of Overhand Throwing Velocity

2014 ◽  
Vol 19 (1) ◽  
pp. 36-40 ◽  
Author(s):  
Meaghan E. Maddigan ◽  
David G. Behm ◽  
Glen R. Belfry
Keyword(s):  
Oxygen Consumption ◽  
Outcome Measures ◽  
High Intensity ◽  
Training Session ◽  
Interval Training ◽  
Control Group ◽  
High Intensity Interval Training ◽  
Overhand Throwing ◽  
High Intensity Interval ◽  
Experimental Group

Context:High intensity interval training (HIIT) has been shown to improve muscle power and endurance, as well as aerobic power.Objective:To assess the effects of HIIT that utilizes resistive elastic bands to improve overhand throwing velocity.Participants:Healthy female volunteers (n = 13) ranging in age from 18–29 years.Interventions:Participants were randomly assigned to either a control group or an experimental group that exercised 3 days per week for 3 weeks. Each training session involved performance of 5 sets of 20 throwing motions against elastic band resistance, which was performed by both extremities.Main Outcome Measures:Maximal oxygen consumption was measured during performance of a graded exercise test that utilized an upper extremity cycle ergometer. A radar gun was used to assess peak throwing velocity and the extent to which throwing velocity was sustained during performance of a 20-throw endurance test.Results:After completing the training, the experimental group exhibited faster peak throwing velocity (61.6 ± 6.6 km/hr to 63.2 ± 8.6 km/hr) and a reduced fatigue index (1.18 ± 0.16 to 1.01 ± 0.02). Training also resulted in a 14% improvement in maximum oxygen consumption (1.40 ± 0.46 L/min to 1.60 ± 0.49 L/ min) and longer time to fatigue (9.99 ± 1.84 min to 11.43 ± 2.29 min).Conclusion:The high-intensity interval training program was effective for improvement of overhand throwing performance.

scholarly journals The Effect of High Intensity Interval Training During Eight Weeks on Speed, Agility, and Acceleration in U19 Soccer Players

2021 ◽  
Vol 15 (8) ◽  
pp. 2390-2395
Author(s):  
Kadir Gökkurt ◽  
Ali Osman Kıvrak
Keyword(s):  
Body Weight ◽  
High Intensity ◽  
Interval Training ◽  
Soccer Players ◽  
Control Group ◽  
High Intensity Interval Training ◽  
Training Schedule ◽  
Post Test ◽  
High Intensity Interval ◽  
Experimental Group

Aim: The aim in this study was to examine the impact of eight-week high-Intensity interval training on speed, agility, and acceleration under 19 (U19) soccer players. Materials and methods: Healthy 22 soccer players from Anadolu Selçukspor U19 football team, one of the 2nd League teams of Turkish Football Federation (TFF), participated voluntarily in this study. The soccer players taking part in the study were separated randomly into two as the experimental and control groups. It was determined that the age average of the players constituting the experimental group was 18.36±0.51 years, their height average was 1.77±0.06 m, and their body weight average was 71.76±6.52 kg while the control group’s age average was 17.55±0.69 years, height average was 1.76±0.04 m, and body weight average was 70.85±5.40 kg. In the study, the soccer players forming the experimental group attended a high-intensity interval training program three days a week for eight weeks, in addition to their regular training. The players of the control group continued their normal training schedule. The soccer players taking part in the study are the players who practice five days a week and play one official match. Results: In this study, through the comparison of the values of the pre-test and post-test regarding the speed and acceleration property of the soccer players of the experimental group, it was found that their post-test values were better (p<0.05). In terms of their agility property, an improvement of pro-rata 0.008 was seen in the experimental group, while the improvement of the control group took place at the proportion of 0.004 (p<0.05). Conclusion: It has been observed that 8-week high-intensity interval training is statistically significant in the speed and acceleration of soccer players. We contemplate that the inclusion of the high-intensity interval training within the annual training schedule in the field of soccer will affect the performance of the soccer players during the season more positively. Keywords: Agility, Soccer; Interval Training, Acceleration, Speed

scholarly journals High-intensity interval training improves specific performance in taekwondo athletes

2020 ◽  
Vol 15 (1) ◽  
pp. 4
Author(s):  
Diego Enrique Aravena Tapia ◽  
Valeria Roman Barrera ◽  
Jonatas Ferreira Da Silva Santos ◽  
Emerson Franchini ◽  
Pablo Valdés Badilla ◽  
...  
Keyword(s):  
Short Duration ◽  
High Intensity ◽  
Interval Training ◽  
Repeated Measurements ◽  
Control Group ◽  
Anaerobic Performance ◽  
Training Methods ◽  
High Intensity Interval Training ◽  
High Intensity Interval ◽  
Experimental Group

Specific training methods is an important aspect in the preparation of taekwondo athletes.<strong> </strong>The purpose of this study was to investigate the effect of a short-duration high-intensity interval training (HIIT) program with specific taekwondo techniques on anaerobic performance.<strong> </strong>Twelve taekwondo athletes were randomized into a control (<em>n</em>=6) or experimental groups (<em>n</em>=6). The experimental protocol consisted of 3 blocks of 6 sets of 10s all-out effort, with 10s passive recovery between sets and 1-min rest interval between blocks, conducted 3 days per week during 4-weeks. A three-way analysis of variance (ANOVA) (group, set and moment) with repeated measurements in the two last factors was conducted to compare the performance during each set of the Frequency Speed Kick Test (FSKT), and an ANOVA two-way (group and moment) with repeated measurements was used to compare the total number of kicks and kick decrement index (KDI). Both groups maintained their regular taekwondo training, which was exactly the same. Before and after the training program the athletes performed the FSKT.<strong> </strong>The experimental group increased (<em>p</em>&lt;0.01) performance in each of the five sets of the FSKT and in the total number of kicks (<em>p</em>&lt;0.001). No statistical difference was observed in the control group after 4-weeks or between the control and experimental group in any moment. A short-duration HIIT program with specific taekwondo techniques improved anaerobic performance measured through the FSKT. However, the fatigue index did not change.

scholarly journals The Effect of High-Intensity Interval Training Periods on Morning Serum Testosterone and Cortisol Levels and Physical Fitness in Men Aged 35–40 Years

2021 ◽  
Vol 10 (10) ◽  
pp. 2143
Author(s):  
Tadeusz Ambroży ◽  
Łukasz Rydzik ◽  
Zbigniew Obmiński ◽  
Wiesław Błach ◽  
Natalia Serafin ◽  
...  
Keyword(s):  
Physical Activity ◽  
Physical Fitness ◽  
Training Program ◽  
High Intensity ◽  
Interval Training ◽  
Control Group ◽  
High Intensity Interval Training ◽  
Cortisol Levels ◽  
High Intensity Interval ◽  
Experimental Group

Background: Intensive physical activity largely modulates resting concentrations of blood cortisol (C) and testosterone (T) and their molar ratio, which is defined as the anabolic–catabolic index and expressed as T/C × 102. The aim of the study is to evaluate the effect of the author’s high-intensity training program on T, C, T/C × 102, and selected physical fitness indices in men between 35 and 40 years of age. Methods: The experiment was conducted on a group of 30 healthy men, divided into control and experimental groups. The experimental group followed a high-intensity 8-week training program, which included three sessions per week, each of them lasting 1 h and consisting of intensive-interval exercises followed by strength circuit exercises. The controls did not change their previous recreational physical activity. T, C, and T/C × 102 were measured before and after the experiment for all participants. Physical performance was examined using a standardized laboratory exercise test to determine maximal oxygen uptake (VO2max). Results: There were statistically significant increases in T (by 36.7%) and T/C × 102 (by 59%), while C somewhat dropped (by 12%) in the experimental group. No changes in the hormonal indices were found in the control group. After completing the experimental training, there were no statistically significant changes in aerobic capacity, but it improved muscle strength in the men studied. Conclusions: High-intensity interval training, continued over an 8-week period, modulates (significantly and positively) the balance between testosterone and cortisol levels and improves physical capacity in men aged 35–40 years.

scholarly journals The effect of high intensity interval training on flexibility and anaerobic powerYüksek yoğunluklu interval antrenmanın esneklik ve anaerobik kapasite üzerine etkisi

2017 ◽  
Vol 14 (4) ◽  
pp. 4088 ◽  
Author(s):  
Kadir Baynaz ◽  
Kursat Acar ◽  
Engin Çinibulak ◽  
Taner Atasoy ◽  
Ahmet Mor ◽  
...  
Keyword(s):  
Body Weight ◽  
High Intensity ◽  
Repeated Measures ◽  
Anaerobic Power ◽  
Interval Training ◽  
Control Group ◽  
High Intensity Interval Training ◽  
High Intensity Interval ◽  
Sedentary Women ◽  
Experimental Group

The aim of this study is to examine the effect of high intensity training with their own body weight on flexibility and anaerobic capacity. A total of 20 sedentary women (10 control and 10 experimental groups) participated in the study voluntary, with a mean age of 18.37 ± 1.43 years. The experimental group completed high intensity interval training 3 times weekly for 6 weeks. Between the 1st and 3rd weeks burpees, plank, jumping jacks, push-up movements and between 4th and 6th weeks box jump, crunches, step ups, mountain climber movements were applied to experimental group according to  20 sec loading and 10 sec resting principle.  The control group did not participate any exercise during this time. Body weight, flexibility and anaerobic power measurements were taken before and after 6 weeks of high intensity interval training. The data were analyzed using the two way repeated measures of ANOVA. The level of significance was determined as p<0.05. At the end of the study, there was no significant difference in the control group parameters. In the experimental group, significant differences were found in the flexibility, body weight and anaerobic power values after the high intensity interval training (p<0.05). For sedentary women who are exercising for health purposes, the Tabata Protocol applied with their own body weight, can be recommended as a high intensity interval training method in terms of improving the parameters mentioned in the study.Extended English abstract is in the end of Full Text PDF (TURKISH) file. ÖzetÇalışmanın amacı, 6 hafta süresince kendi vücut ağırlığıyla yapılan yüksek yoğunluklu antrenmanların esneklik ve anaerobik kapasite üzerine etkisinin incelenmesidir. Çalışmaya yaş ortalaması 18,37± 1,43 yıl olan 10’u kontrol, 10’u deney grubu olmak üzere toplam 20 gönüllü sedanter kadın katılmıştır. Deney grubuna,  6 hafta süresince haftada 3 gün yüksek şiddetli interval antrenman yaptırılmıştır.  1. ve 3. haftalar arasında ikişer kez sırayla burpees, plank, jumping jacks, push-up hareketleri,   4. ve 6. haftalar arasında da ikişer kez sırayla box jump, crunches, step ups, mountain climber hareketleri 20 saniye yüklenme 10 saniye dinlenme prensibiyle uygulanmıştır. Kontrol gurubu bu süre içerisinde herhangi bir egzersiz yapmamıştır. 6 haftalık antrenmana başlamadan önce ve 6 haftanın bitiminden sonra deneklerin vücut ağırlığı, esneklik ve anaerobik güç ölçümleri alınmıştır. Esneklik, anaerobik kapasite ve vücut ağırlığı skorlarındaki değişim iki yönlü varyans analizi (two way repeated measures of ANOVA) ile yapılmıştır. Çalışmanın istatistiksel anlamlılık seviyesi p<0,05 olarak belirlenmiştir. Çalışma sonunda kontrol grubu parametrelerinde anlamlı fark yokken, yüksek şiddetli interval antrenman yapan sedanter kadınların esneklik, vücut ağırlığı ve anaerobik güç değerlerinde anlamlı fark bulunmuştur (p<0.05). Sağlık amaçlı egzersiz yapan sedanterlere, çalışmada belirtilen parametreleri geliştirmeleri açısından yüksek şiddetli interval antrenman yöntemi olarak kendi vücut ağırlığı ile yapılan Tabata Protokolü önerilebilir.

Is high-intensity interval training a time-efficient exercise strategy to improve health and fitness?

2014 ◽  
Vol 39 (3) ◽  
pp. 409-412 ◽  
Author(s):  
Jenna B. Gillen ◽  
Martin J. Gibala
Keyword(s):  
High Intensity ◽  
Disease Risk ◽  
Interval Training ◽  
High Volume ◽  
Oxidative Capacity ◽  
High Intensity Interval Training ◽  
Exercise Participation ◽  
Cardiometabolic Disorders ◽  
Low Volume ◽  
High Intensity Interval

Growing research suggests that high-intensity interval training (HIIT) is a time-efficient exercise strategy to improve cardiorespiratory and metabolic health. “All out” HIIT models such as Wingate-type exercise are particularly effective, but this type of training may not be safe, tolerable or practical for many individuals. Recent studies, however, have revealed the potential for other models of HIIT, which may be more feasible but are still time-efficient, to stimulate adaptations similar to more demanding low-volume HIIT models and high-volume endurance-type training. As little as 3 HIIT sessions per week, involving ≤10 min of intense exercise within a time commitment of ≤30 min per session, including warm-up, recovery between intervals and cool down, has been shown to improve aerobic capacity, skeletal muscle oxidative capacity, exercise tolerance and markers of disease risk after only a few weeks in both healthy individuals and people with cardiometabolic disorders. Additional research is warranted, as studies conducted have been relatively short-term, with a limited number of measurements performed on small groups of subjects. However, given that “lack of time” remains one of the most commonly cited barriers to regular exercise participation, low-volume HIIT is a time-efficient exercise strategy that warrants consideration by health practitioners and fitness professionals.

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&lt;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&lt;0.05), whereas the LV end-diastolic volume (EDV) correlated with the inter-delay of atrium in roof motion (r=0.40, p&lt;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 The Effects of the Combination of High-Intensity Interval Training with 3D-Multiple Object Tracking Task on Perceptual-Cognitive Performance: A Randomized Controlled Intervention Trial

2021 ◽  
Vol 18 (9) ◽  
pp. 4862
Author(s):  
Soo-Yong Park ◽  
Thomas Jürgen Klotzbier ◽  
Nadja Schott
Keyword(s):  
Object Tracking ◽  
Cognitive Performance ◽  
High Intensity ◽  
Interval Training ◽  
Multiple Object Tracking ◽  
Control Group ◽  
High Intensity Interval Training ◽  
Multiple Object ◽  
Post Test ◽  
High Intensity Interval

The ability to process goal-related visual information while ignoring goal-irrelevant information is essential for the human attention system. The study aimed to investigate how perceptual–cognitive performance was affected during high-intensity interval training (HIIT) using a 3D-multiple object tracking (3D-MOT) task called Neurotracker (NT). In an experimental design, 42 healthy adults (age M = 23.3 SD = 2.94, VO2max 52.8 ± 5.66 mL·kg−1·min−1) were randomly assigned to an intervention (HIIT + NT, NT, HIIT) or control group. NT performance (20 trials per session) was measured pre-and post-test (at 5, 15, and 25 min while running on the treadmill). The participants trained twice a week for a 4-week intervention period. There was a significant interaction effect between pre/post-test and groups regarding perceptual-cognitive performance, indicating similar enhancements in the HIIT + NT and the NT group during exercise. HIIT influences physical fitness but did not show any impact on perceptual–cognitive performance. Due to the specific NT task characteristics, improved physical abilities may not directly impact sport-specific perceptual-cognitive performance. Our findings suggest that training resulted in substantial task-specific gains. Therefore, combination training may be proposed as a training program to improve perceptual–cognitive, and physical performance in a time-efficient way.

scholarly journals Effect of high-intensity interval training on glycemic control in adults with type 1 diabetes with overweight or obesity: a randomized controlled trial with partial cross-over

2020 ◽  
Author(s):  
Angela S Lee ◽  
Nathan A Johnson ◽  
Margaret McGill ◽  
Jane Overland ◽  
Connie Luo ◽  
...  
Keyword(s):  
Type 1 Diabetes ◽  
Glycemic Control ◽  
High Intensity ◽  
Intervention Group ◽  
Interval Training ◽  
Control Group ◽  
High Intensity Interval Training ◽  
High Intensity Interval ◽  
Overweight Or Obesity

<b>Objective:</b> To study the effect of 12 weeks of high-intensity interval training (HIIT) on glycemic control in adults with type 1 diabetes with overweight or obesity. <p> </p> <p><b>Research Design and Methods:</b> Thirty inactive adults with type 1 diabetes who had BMI≥25kg/m<sup>2</sup> and HbA1c≥7.5% were randomized to 12 weeks of either: HIIT exercise intervention consisting of 4x4 minutes HIIT (85-95% HRpeak) performed thrice weekly, or usual care control. In a partial cross-over design, the control group subsequently performed the 12-week HIIT intervention. The primary endpoint was the change in HbA1c from baseline to 12 weeks. Glycemic and cardiometabolic outcomes were measured at 0, 12, and 24 weeks.</p> <p> </p> <p><b>Results:</b> Participants were aged 44±10 years, with diabetes duration 19±11 years, and BMI 30.1±3.1 kg/m<sup>2</sup>.<sup> </sup>HbA1c decreased from 8.63 ± 0.66% at baseline to 8.10 ± 1.04% at 12 weeks in the HIIT intervention group (p=0.01), however this change was not significantly different to the control group (HIIT -0.53 ± 0.61%, control -0.14 ± 0.48%, p=0.08). In participants who undertook at least 50% of the prescribed HIIT intervention, the HbA1c reduction was significantly greater than control (HIIT -0.64 ± 0.64% (n=9), control -0.14 ± 0.48% (n=15), p=0.04). There were no differences in insulin dose, hypoglycemia on continuous glucose monitoring, blood pressure, blood lipids, body weight or body composition between groups. </p> <p> </p> <p><b>Conclusions:</b> <a>Overall, there was no significant reduction in HbA1c with a 12-week HIIT intervention in adults with type 1 diabetes. However glycaemic control may improve for people who undertake HIIT with greater adherence.</a></p>

scholarly journals Effects of High-Intensity Interval Training on Sleep: A Systematic Review and Meta-Analysis

2021 ◽  
Vol 18 (20) ◽  
pp. 10973
Author(s):  
Leizi Min ◽  
Dizhi Wang ◽  
Yanwei You ◽  
Yingyao Fu ◽  
Xindong Ma
Keyword(s):  
Sleep Quality ◽  
High Intensity ◽  
Meta Analysis ◽  
Interval Training ◽  
Mean Difference ◽  
Favorable Effect ◽  
Control Group ◽  
Cochrane Central Register ◽  
High Intensity Interval Training ◽  
High Intensity Interval

Objectives: To use a quantitative approach to examine the effects of high-intensity interval training (HIIT) interventions on sleep for adults. Methods: PubMed, Ebsco, Web of Science, Cochrane Central Register of Controlled Trials, the China National Knowledge Infrastructure, and Wanfang Data were searched from their inception to December 2020. Intervention studies with a control group that examined the effects of HIIT interventions on sleep were included in this meta-analysis. The risk of bias was assessed using the tool provided by the Cochrane Handbook for Systematic Reviews of Interventions. Effect sizes (ESs), calculated as weighted mean difference (WMD) and standardized mean difference (SMD), were used to examine the effects of objective outcomes and subjective outcomes separately. Results: A large increase in sleep quality (SQ) reflected by the Pittsburgh Sleep Quality Index global scores [WMD = −0.90, 95%CI (−1.72, −0.07), p = 0.03, n = 8] and a small-to-medium favorable effect on sleep efficiency (SE) [SMD = 0.43, 95%CI (0.20, 0.65), p = 0.0002, n = 10] were found after HIIT intervention. In addition, sub-analyses results suggest that ESs were moderated by the type, duration and frequency, as well as the length of the HIIT intervention. Conclusions: HIIT may be a promising way to improve overall subjective SQ and objective SE. PROSPERO, protocol registration number: CRD42021241734.

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