scholarly journals Effect of High-Intensity Interval Training on Leptin, Adiponectin, and Leptin/Adiponectin Ratio in Overweight Adolescent Boys

Background: Proliferation of adipose tissue increases leptin secretion and decreases adiponectin concentration. Exercise is an intervention to control and reverse this process. Therefore, the present study aimed to determine the effect of 8-week high-intensity interval training on leptin, adiponectin, and the ratio of leptin to adiponectin in overweight adolescent boys. Materials and Methods: The present quasi-experimental study was conducted on overweight adolescent boys (13-18 years old, mean body mass index 27.05±1.4 kg/m2). A total of 30 participants volunteered who were divided into three groups of 10 people including short-term (9 sessions of 30-second training with 150-second rest), long-term (4 sessions of 150-second training with 240-second rest), and control group. The training groups performed high-intensity running sprints 3 times per week for 8 weeks. Data were analyzed using two-way repeated-measures ANOVA (3 groups×2 measurement times) and Bonferroni test. Results: Performed high-intensity interval training failed to affect leptin, weight, and body mass index but increased adiponectin and decreased the ratio of leptin to adiponectin (P = 0.042) and fat percentage. No difference was observed between the two types of interval training in changing the level of leptin, adiponectin, fat percentage, and body mass index. Conclusion: High-intensity interval training increases metabolic benefits in overweight adolescents by increasing adiponectin and subsequently decreasing the leptin/adiponectin ratio. Low exercise, no calorie restriction, and other factors affecting puberty may influence the research results.

Author(s):  
Lora-Pozo ◽  
Lucena-Anton ◽  
Salazar ◽  
Galán-Mercant ◽  
Moral-Munoz

Abstract: This study aims to evaluate the effectiveness of high-intensity interval training compared with no intervention and other types of training interventions for people with Type 2 Diabetes. A systematic review and meta-analysis of randomized controlled trials that used high-interval intensity training to improve anthropometric, cardiopulmonary and metabolic conditions were conducted. The search was performed during October–December 2017 using the databases PubMed, Web of Science and Physiotherapy Evidence Database (PEDro). The methodological quality of the studies was evaluated using the PEDro scale. A total of 10 articles were included in this meta-analysis. After statistical analysis, favorable results were obtained for high-Intensity Interval Training compared with control (non-intervention): [Weight: Standardized mean difference (SMD) = −2.09; confidence interval (CI) 95%: (−3.41; −0.78); body-mass index: SMD = −3.73; CI 95%: (−5.53; −1.93); systolic blood pressure: SMD = −4.55; CI 95%: (−8.44; −0.65); VO2max: SMD = 12.20; CI 95%: (0.26; 24.14); HbA1c: SMD = −3.72; CI 95%: (−7.34; −0.10)], moderate intensity continuous training: [body-mass index: SMD = −0.41; CI 95%: (−0.80; −0.03); VO2max: SMD = 1.91; CI 95%: (0.18; 3.64)], and low intensity training: [Weight: SMD = −2.06; CI 95%: (−2.80; −1.31); body-mass index: SMD = −3.04; CI 95%: (−5.16; −0.92); systolic blood pressure: SMD = −2.17; CI 95%: (−3.93; −0.41); HbA1c: SMD = −1.58; CI 95%: (−1.84; −1.33)]. The results show that high-intensity interval training can be a useful strategy in order to improve anthropometric, cardiopulmonary and metabolic parameters in people with Type 2 diabetes. Despite this, it could be essential to clarify and unify criteria in the intervention protocols, being necessary new lines of research.


2019 ◽  
Vol 4 (2) ◽  
pp. 106
Author(s):  
Muarif Arhas Putra

Zaman yang semakin modern menuntut segalanya dilaksanakan dengan praktis, termasuk dalam bidang olahraga. Tidak memiliki waktu merupakan salah satu alasan klasik yang sering sekali diucapkan ketika seseorang diharuskan untuk berolahraga. Terutama jika orang tersebut tidak memiliki banyak aktifitas fisik, maka dibutuhkan olahraga yang praktis namun tetap efektif. Tujuan dari penelitian ini adalah untuk melihat pengaruh dari High Intensity Interval Training (HIIT) terhadap Body Mass Index (BMI) wanita yang telah mengalami menopause. Hal ini menjadi penting untuk dilaksanakan karena sebagian besar wanita yang mengalami menopause mengalami kenaikan berat badan sehingga berbahaya karena dapat mengundang berbagai penyakit seperti kolesterol, serangan jantung dan obesitas. Metode penelitian ini adalah penelitian quasi experiment. Untuk melihat pengaruh HIIT terhadap BMI wanita menopause. Data yang didapatkan akan diolah secara kuantitatif untuk melihat pengaruh HIIT. Penelitian yang dilaksanakan berlokasi di Kota Padang Sumatera Barat. Populasi penelitian adalah perempuan-perempuan menopause di Kota Padang dengan rentangan usia 50-60 tahun. Perlakuan dilaksanakan sebanyak 3 kali dalam seminggu selama 5 bulan. Hasil penelitian memperlihatkan bahwa terdapat perbedaan yang signifikan antara kelompok eksperimen yang melaksanakan HIIT dan kelompok kontrol hanya menggunakan kardio biasa seperti jalan santai.


Author(s):  
Efraldo Yudistira ◽  
Bagus Komang Satriyasa ◽  
Syahmirza Indra Lesmana ◽  
Dewa Ayu Inten Dwi Primayanti ◽  
I Nengah Sandi ◽  
...  

High-intensity exercise exercises in the exercise process use enormous amounts of muscle glycocal energy to strengthen adipose tissue into energy acids, energy requirements balanced with oxygen demand that will improve pulmonary performance and physiology. Weight-adjusting exercises are adjusted to the adaptation and physiology of muscles, increased muscle development and physiological muscles and muscles increases into more so that the energy process increases both muscle glycogen and increased fat oxidation. In this study the sample will be divided into 2 groups, group I will be given High intensity interval training, group II will be given Circuit weight training, both groups aim to reduce the percentage of body fat and increase the vital capacity of the lung. This study measures the pre and post test results so that it will be measured before treatment and after treatment after the exercise program for 6 weeks. Samples will be measured using Bioelectrical Impedance Analisys to measure the percentage of body fat and Spirometry to measure vital pulmonary capacity.The results of the first group hypothesis test showed the value before the fat percentage of 21.75 and after training to be 19.46, then before the vital capacity of the lungs 2.32 and after training to 4.02. While in group 2 the fat percentage value was 21.55 and the training was determined to be 19.79. For the value of vital capacity of lung 2.46 and after training to 3.64, with the probability value in both groups was 0.000 which means (p <0.05) and the measurement was no significant difference from both exercises. In the test of hypothesis III the comparison of results in group I , II, t-test independent sample with the result of the average group I fat difference 2.29 ± 0.46, KVparu 1.75 ± 0.55, Group II fat% 1.70 ± 0.43, KVparu 1.17 ± 0.45 with fat% probability value (p = 0,725) and KVparu (p = 0,073) which means (p> 0,05) and can. There was no significant difference between the three interventions.The conclusion of this research is high intensity interval training as well as ciecuit weight training in decreasing body fat percentage and increasing vital capacity of lung


2020 ◽  
Vol 13 (7) ◽  
pp. 57
Author(s):  
Ali Erdem Cigerci ◽  
Harun Genc

The aim of this study was to examine the physical and selected performance characteristics of 9-week High-Intensity Interval Training (HIIT) on sedentary university students. Participants were separated two groups as HIIT and control group (CG). HIIT group applied training 3 times a week for 9 weeks. CG was not applied any training. Before and after HIIT training program, the subjects were applied to age, height, body weight (BW), body mass index (BMI) tests for physical parameters and standing long jump (SLJ), vertical jump (VJ), 10-20 m sprint, T agility test (TAT), star excursion balance test (SEBT), running-based anaerobic sprint test (RAST) for performance parameters. Multiple analysis of variance (MANOVA) was used to analyze of inter-group, intra group and the effect of training in repeated measurements. Bonferroni test was used for Post Hoc comparisons; the significance level was accepted as 0.05. There was a significant difference in BW, BMI and all performance parameters in favor of HIIT group. HIIT provided effective development to physical and performance characteristics of university students.


2018 ◽  
Vol 23 (4) ◽  
pp. 167-171 ◽  
Author(s):  
M.S. Akgül

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.


Author(s):  
Jarosław Domaradzki ◽  
Ireneusz Cichy ◽  
Andrzej Rokita ◽  
Marek Popowczak

Physical education classes often fail to include sufficient exercise intensity to induce changes in body tissue composition and physical fitness. Short-term high-intensity interval training protocols incorporated into physical education lessons are one possible solution to this problem. Existing studies have not examined how individuals differing in body mass index (e.g., normal-weight, underweight) respond to high-intensity interval training exercises. Therefore, this study aimed to evaluate the effects of a Tabata protocol on body composition measurements, aerobic capacity, and motor performance in underweight and overweight adolescents (the experimental groups) vs normal-weight adolescents (here regarded as the control group). The sample included 58 adolescents (28 boys, mean age = 16.2 years; 30 girls, mean age = 16.2 years) who completed the high-intensity interval training and the following set of measurements pre- and post- intervention: height, weight, body fat percentage and waist-to-hip ratio, physical efficiency index (based on the Harvard Step Test), agility (in 4 × 10 shuttle run test), and lower-limb muscle power in vertical jump. The results showed that high-intensity interval training was effective in reducing body weight, waist-to-hip ratio, and body fat percentage only in overweight individuals. Improvement in aerobic capacity was found only in underweight and overweight boys. Further research should focus on the development of customized exercise protocols and their adaptation to girls and assess the sustainability of the changes induced.


2020 ◽  
Vol 105 (8) ◽  
pp. e2941-e2959 ◽  
Author(s):  
Benjamin J Ryan ◽  
Michael W Schleh ◽  
Cheehoon Ahn ◽  
Alison C Ludzki ◽  
Jenna B Gillen ◽  
...  

Abstract Objective We compared the effects of high-intensity interval training (HIIT) and moderate-intensity continuous training (MICT) on insulin sensitivity and other important metabolic adaptations in adults with obesity. Methods Thirty-one inactive adults with obesity (age: 31 ± 6 years; body mass index: 33 ± 3 kg/m2) completed 12 weeks (4 sessions/week) of either HIIT (10 × 1-minute at 90%HRmax, 1-minute active recovery; n = 16) or MICT (45 minutes at 70%HRmax; n = 15). To assess the direct effects of exercise independent of weight/fat loss, participants were required to maintain body mass. Results Training increased peak oxygen uptake by ~10% in both HIIT and MICT (P &lt; 0.0001), and body weight/fat mass were unchanged. Peripheral insulin sensitivity (hyperinsulinemic-euglycemic clamp) was ~20% greater the day after the final exercise session compared to pretraining (P &lt; 0.01), with no difference between HIIT and MICT. When trained participants abstained from exercise for 4 days, insulin sensitivity returned to pretraining levels in both groups. HIIT and MICT also induced similar increases in abundance of many skeletal muscle proteins involved in mitochondrial respiration and lipid and carbohydrate metabolism. Training-induced alterations in muscle lipid profile were also similar between groups. Conclusion Despite large differences in training intensity and exercise time, 12 weeks of HIIT and MICT induce similar acute improvements in peripheral insulin sensitivity the day after exercise, and similar longer term metabolic adaptations in skeletal muscle in adults with obesity. These findings support the notion that the insulin-sensitizing effects of both HIIT and MICT are mediated by factors stemming from the most recent exercise session(s) rather than adaptations that accrue with training.


2018 ◽  
Vol 2 (1) ◽  
pp. 158-166
Author(s):  
Muarif Arhas Putra ◽  
Rahmi Fitria ◽  
Rahmah Evita Putri

The purpose of this study was to determine the effect of high intensity interval training (HIIT) on the body fat percentage of menopausal women with obesity. This research method was quasi-experimental. The research design carried out was the pretest-posttest nonequivalent control group design. The results obtained before and after the treatment were both normally distributed and homogeneous. Then independet sample t-test carried out with the result that there was significant difference between the control and experimental groups. In conclusion, high intensity interval training (HIIT) had a significant impact on the fat percentage of  menopausal women with obesity. Keywords: HIIT, Obesity, Menopause.


2020 ◽  
Vol 26 ◽  
pp. 7-15
Author(s):  
Jaak Jürimäe

Obesity is the most common chronic disease in childhood, and is a risk factor for cardiovascular diseases (CVD) later in life. Being obese is inversely associated with physical activity and cardiorespiratory fitness (CRF) in children. Increased CRF may negate the detrimental effects of obesity-associated risk factors for CVD, while poor CRF has been associated with increased arterial stiffness and higher levels of blood inflammatory markers. The use of time efficient high-intensity interval training (HIIT) to reduce CVD risk factors and body mass, improve CRF and other health parameters has become popular during the last years in adults with obesity. However, a relatively few studies have investigated the effect of HIIT on body composition, CRF and cardiometabolic biomarkers in children with obesity. It is expected that low-volume HIIT programs are feasable for community-based body mass reduction and health promotion in children with obesity.


2019 ◽  
Author(s):  
Emma Cockcroft ◽  
Bert Bond ◽  
Craig A Williams ◽  
Sam Harris ◽  
Sarah R Jackman ◽  
...  

Abstract Background : Current evidence of metabolic health benefits of high-intensity interval training (HIIT) are limited to longer training periods or conducted in overweight youth. This study assessed 1) fasting and postprandial insulin and glucose before and after two weeks of HIIT in healthy adolescent boys, and 2) the relationship between pre intervention health outcomes and the effects of the HIIT intervention. Methods: Seven healthy boys (age:14.3 ± 0.3 y, BMI: 21.6 ± 2.6, 3 participants classified as overweight) completed 6 sessions of HIIT over two weeks. Insulin resistance (IR) and blood glucose and insulin responses to a Mixed Meal Tolerance Test (MMTT) were assessed before (PRE), 20 h and 70 h after (POST) the final HIIT session. Results: Two weeks of HIIT had no effect on fasting plasma glucose, insulin or IR at 20 h and 70 h POST HIIT, nor insulin and glucose response to MMTT (all P>0.05). There was a strong negative correlation between PRE training IR and change in IR after HIIT (r =-0.96, P <0.05). Conclusion: Two weeks of HIIT did not elicit improvements to fasting or postprandial glucose or insulin health outcomes in a group of adolescent boys. However the negative correlation between PRE IR and improvements after HIIT suggest that interventions of this type may be effective in adolescents with raised baseline IR.


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