scholarly journals The Effect of Eight Weeks High-Intensity Interval Training (HIT) on of Irisin Levels in Obese Young Men

Thrita ◽  
2020 ◽  
Vol 8 (2) ◽  
Author(s):  
Mohsen Jafari ◽  
Ismaeel Abbasi ◽  
Sahar Fathi Aralloo
Keyword(s):  
High Intensity ◽  
Interval Training ◽  
Heart Rate Reserve ◽  
High Intensity Interval Training ◽  
Young Males ◽  
Brown Adipose ◽  
The Mean ◽  
High Intensity Interval ◽  
Mean Differences ◽  
Experimental Group

Background: Irisin is a myosin that increases the secretion during exercise and stimulates the white to brown adipose tissue transformation. Objectives: The current study aimed to investigate the effects of eight weeks of high-intensity interval training (HIT) on irisin levels of young obese men. Methods: The subjects of the study were divided into control and experimental groups. The experimental group performed HIT training for eight weeks (three sessions per week, each session 45 to 60 minutes with an intensity of 90% of heart rate reserve). Fasting blood sampling was done 24h before and 48h after trainings. Data were analyzed using Wilcoxon and U-Mann-Whitney tests. Results: In the experimental group, BMI was decreased (P = 0.023), and irisin was increased significantly (P = 0.005). Also, the mean differences of BMI (P = 0.049) and irisin (P = 0.031) were significant between control and experimental groups (P ≤ 0.05). Conclusions: The findings showed that eight-week of HIT could increase irisin and reduce BMI in obese young males.

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 A randomized clinical study evaluating effects of high-intensity interval training on myocardial microvascular dysfunction

2021 ◽  
Vol 42 (Supplement_1) ◽  
Author(s):  
M Rafique ◽  
O G Solberg ◽  
L Gullestad ◽  
B Bendz ◽  
K Rolid ◽  
...  
Keyword(s):  
High Intensity ◽  
Standard Care ◽  
Interval Training ◽  
Microvascular Dysfunction ◽  
Microvascular Function ◽  
High Intensity Interval Training ◽  
Long Term Outcome ◽  
Randomized Clinical Study ◽  
The Mean ◽  
High Intensity Interval

Abstract Background Myocardial microvascular function assessed with the Index of Microcirculatory Resistance (IMR) after heart transplantation (HTx) predicts the development of cardiac allograft vasculopathy (CAV) and adverse long-term outcome. This study aimed to evaluate the otherwise beneficial effects of high-intensity interval training (HIT) on microvascular dysfunction development. Methods Eighty-one de novo HTx patients were randomized to nine consecutive months of HIT or standard care rehabilitation. Coronary physiology assessment with a pressure wire was performed in the left anterior descending coronary artery. IMR was calculated by multiplying the mean distal coronary pressure by the mean hyperemic transit time. Results obtained at three and twelve months after HTx were compared to assess the treatment effect of HIT. Results Results were available for 60 patients. 71% were men, and the mean age was 48±13. IMR in the HIT group (n=26) decreased from 14.8±9.5 to 13.8±8.0, change = 1.2, 95% CI [−2.6 to 4.9] and increased in the standard care group (n=34) from 13.8±5.8 to 16.8±12.0, change = −3.5, 95% CI [−7.1 to 0.1]. The mean difference between groups was 4.7, 95% CI [−9.7 to 0.4], p=0.07. Conclusion These results suggest that early initiation of HIT improves microvascular function. FUNDunding Acknowledgement Type of funding sources: Foundation. Main funding source(s): Stiftelsen Dam

scholarly journals Effect of Wingate-based high intensity interval training on aerobic and anaerobic performance of kick boxers

2018 ◽  
Vol 23 (4) ◽  
pp. 167-171 ◽  
Author(s):  
M.S. Akgül
Keyword(s):  
Body Mass ◽  
High Intensity ◽  
Interval Training ◽  
Anaerobic Performance ◽  
High Intensity Interval Training ◽  
Significant Difference ◽  
Post Test ◽  
High Intensity Interval ◽  
Experimental Group ◽  
Aerobic And Anaerobic

Purpose: The aim of this study was to investigate the effects of two-week high intensity interval training (HIIT) on aerobic and anaerobic performance of kick boxers. Material: 24 male kick boxers (age 19.39 ± 0.72 y, body mass 74.14 ± 6.22 kg, height 177.95 ± 5.29 cm) volunteered for the study. Participants were randomly divided into two groups: experimental and control. As well as routine training program, experimental group carried out Wingate-based HIIT 3 times per week for two weeks. Wingate protocol was as follow: 4 repetitions with 4 mins recovery (4X30sn all-out effort) during the first week, 5 repetitions with 4 mins recovery (5X30sn all-out effort) during the second week. In order to determine aerobic capacity, 20m shuttle run test was used while Wingate anaerobic test was used to determine anaerobic performance. Descriptive statistic was used to demonstrate mean values and standard deviation of the variables. Non-parametric Mann Whitney-U test was used to show the differences between groups. Wilcoxon Signed Rank Test was used to compare intra-groups results from pre and post-test applications. Results: There was no significant difference between groups during pre-test measurements There was significant difference in PP, MP in experimental group compared to control during the post-test measurements. There was no difference in body mass, body fat (%) and predicted VO2max in both groups between measurements. Conclusions: According to intra and inter-group results, it can be concluded that two-week Wingate-based HIIT can be used to improve aerobic and anaerobic performances of kick boxers.

High Intensity Interval Training Improves Endurance Performance and Increases Brown Adipose Mass in Diet-Induced Obese Mice

2017 ◽  
Vol 49 (5S) ◽  
pp. 348
Author(s):  
Kim S L Mileski ◽  
Luiz G G Porto ◽  
Sidney A. Pereira ◽  
Fernanda C B Oliveira ◽  
Francisco de Assis R. Neves ◽  
...  
Keyword(s):  
High Intensity ◽  
Interval Training ◽  
Endurance Performance ◽  
Obese Mice ◽  
High Intensity Interval Training ◽  
Brown Adipose ◽  
High Intensity Interval ◽  
Adipose Mass

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.

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