scholarly journals Effects of 4 Weeks of a Technique-Specific Protocol with High-Intensity Intervals on General and Specific Physical Fitness in Taekwondo Athletes: An Inter-Individual Analysis

2021 ◽  
Vol 18 (7) ◽  
pp. 3643
Author(s):  
Alex Ojeda-Aravena ◽  
Tomás Herrera-Valenzuela ◽  
Pablo Valdés-Badilla ◽  
Jorge Cancino-López ◽  
José Zapata-Bastias ◽  
...  
Keyword(s):  
Body Composition ◽  
Physical Fitness ◽  
High Intensity ◽  
Female Athletes ◽  
Interval Training ◽  
Control Group ◽  
Individual Response ◽  
Post Intervention ◽  
Time Interaction ◽  
Specific Protocol

The aim of this research was to compare the effects of a technique-specific high-intensity interval training (HIIT) protocol vs. traditional taekwondo training on physical fitness and body composition in taekwondo athletes, as well as to analyse the inter-individual response. Utilising a parallel controlled design, sixteen male and female athletes (five females and 11 males) were randomly divided into an experimental group (EG) that participated in the technique-specific HIIT and a control group (CG) that participated in traditional taekwondo training. Both groups trained three days/week for four weeks. Squat jump (SJ), countermovement jump (CMJ), 5-metre sprint (5M), 20-metre shuttle run (20MSR), taekwondo specific agility test (TSAT), multiple frequency speed of kick test (FSKTMULT), total kicks, and kick decrement index (KDI), as well as body composition were evaluated. Results indicate that there are no significant differences (p > 0.05) in the factors group and time factor and group by time interaction (p > 0.05). Although percentage and effect size increases were documented for post-intervention fitness components in TSAT, total kicks, KDI, and 20MSR, responders and non-responders were also documented. In conclusion, a HIIT protocol based on taekwondo-specific technical movements does not report significant differences in fitness and body composition compared to traditional taekwondo training, nor inter-individual differences between athletes.

scholarly journals Effects and Responsiveness of a Multicomponent Intervention on Body Composition, Physical Fitness and Leptin in Overweight/Obese Adolescents

2021 ◽  
Vol 18 (14) ◽  
pp. 7267
Author(s):  
Leticia Borfe ◽  
Caroline Brand ◽  
Letícia Schneiders ◽  
Jorge Mota ◽  
Claudia Cavaglieri ◽  
...  
Keyword(s):  
Body Composition ◽  
Physical Fitness ◽  
Intervention Group ◽  
Interleukin 10 ◽  
Control Group ◽  
Post Intervention ◽  
Necrosis Factor Alpha ◽  
Obese Adolescents ◽  
Quasi Experimental ◽  
Multicomponent Program

Physical exercise reduces the biochemical markers of obesity, but the effects of multicomponent interventions on these markers should be explored. The present study aimed to elucidate how overweight/obese adolescents respond to a multicomponent program approach on body composition, physical fitness, and inflammatory markers, using a quasi-experimental study with 33 overweight/obesity adolescents (control group (CG) = 16; intervention group (IG) = 17). The intervention consisted of 24 weeks with physical exercises and nutritional and psychological guidance. Both groups were evaluated at the pre/post-intervention moments on body mass index (BMI); body fat (%Fat); waist circumference (WC); waist/hip ratio (WHR); waist-to-height ratio (WHtR), cardiorespiratory fitness (CRF); abdominal strength, flexibility; leptin; interleukin 6; interleukin 10; and tumor necrosis factor-alpha. Mixed-analysis of variance and generalized estimation equations were used for statistical analysis. There was an interaction effect between groups and time on %Fat (p = 0.002), WC (p = 0.023), WHR (p < 0.001), WHtR (p = 0.035), CRF (p = 0.050), and leptin (p = 0.026). Adolescents were classified as 82.4% responders for %Fat, 70.6% for WC, 88.2% for WHR, and 70.6% for CRF. Further, there was an association between changes in %Fat (p = 0.033), WC (p = 0.032), and WHR (p = 0.033) between responders and non-responders with CRF in the IG. There was a positive effect on body composition, physical fitness, and leptin. In addition, reductions in body composition parameters were explained by CRF improvements.

scholarly journals Effects of High Intensity Interval Training on Executive Function in Children Aged 8–12 Years

2019 ◽  
Vol 16 (21) ◽  
pp. 4127 ◽  
Author(s):  
Nobuaki Tottori ◽  
Noriteru Morita ◽  
Kenji Ueta ◽  
Satoshi Fujita
Keyword(s):  
Executive Function ◽  
Physical Fitness ◽  
High Intensity ◽  
Digit Span ◽  
Interval Training ◽  
Control Group ◽  
High Intensity Interval Training ◽  
Tower Of Hanoi ◽  
Positive Effects ◽  
High Intensity Interval

This study investigated the effects of a high intensity interval training (HIIT) program on both physical fitness and executive functions in children. Fifty-six children aged 8–12 years participated in this study, and were divided into a HIIT group and a control group. The HIIT group performed three sessions of the 8- to 10-min HIIT program per week for 4 weeks. Before and after the intervention, 20-m shuttle runs, sit-ups, and standing long jumps were assessed as test of physical fitness. In addition, the executive function was assessed using the digit span forward (DSF) test, digit span backward (DSB) test, and Tower of Hanoi test. Only the HIIT group experienced significant improvement when completing the 20-m shuttle run (p = 0.042) and sit-ups (p < 0.001). Regarding executive function, the number of correct answers in DSB test significantly increased only in the HIIT group (p = 0.003). However, the standing long jump, DSF, and the Tower of Hanoi test performance did not change after intervention. The findings of the present study suggest that HIIT has positive effects on a core executive function such as working memory in addition to components of the physical fitness such as cardiorespiratory endurance and muscular endurance.

scholarly journals Specific wushu sanda high-intensity interval training protocol improved physical fitness of amateur athletes’: A pilot study

2020 ◽  
Vol 14 (2) ◽  
pp. 47
Author(s):  
Jorge Rafael Farias Monteiro ◽  
Fabrício Boscolo Del Vecchio ◽  
Breno Berny Vasconcelos ◽  
Victor Silveira Coswig
Keyword(s):  
Physical Fitness ◽  
High Intensity ◽  
Small Sample Size ◽  
Interval Training ◽  
Small Sample ◽  
Time To Exhaustion ◽  
Countermovement Jump ◽  
Amateur Athletes ◽  
Performance Improvements ◽  
Specific Protocol

<p><em>Objective: </em>To investigate the effects of the addition of a specific high-intensity intermittent training (HIIT) protocol to the habitual training on the physical fitness of amateur wushu sanda athletes. <em>Methods: </em>This is an experimental study in which 6 amateur regional level wushu sanda athletes (24.6±6.4 yrs, 1.70±0.1m height, and 71.3±7.3kg weight) underwent a 2 session/week training program for 4 weeks. The HIIT specific protocol was composed of 3 rounds of 2 minutes with 1-minute intervals in between, simulating a match duration. Each round was divided into 8 blocks of 15 seconds. Each block was composed of 5 seconds of high-intensity activities, 5 seconds of low-intensity activities and 5 seconds of pause. Countermovement jump, squat jump, horizontal jump, aerobic fitness (TKDtest) and kick speed test (FSOK) were applied.<em> Results:</em> Athletes presented performance increases in countermovement jump (from 41±5.7 to 47.3±7.3cm, <em>p</em>=0.007, <em>g</em>=0.88), horizontal jump (from 1.7±0.4 to 2.3±0.3cm, <em>p</em>=0.01, <em>g</em>=1.56) and in the FSOK test (from 19.8±1.7 to 23.0±2.5 kicks, <em>p</em>=0.003, <em>g</em>=1.38). The resting heart rate decreased (from 120±8.3 to 107±11.4 bpm, <em>p</em>=0.03, <em>g</em>=1.20) and the time to exhaustion increased (from 8.5±1.8 to 13.1±1.4 min, <em>p</em>=0.003, <em>g</em>=2.63), as well as the number of kicks (from 187±55.3 to 368±39.8 kicks,<em> p</em>=0.001, <em>g</em>=3.46). <em>Conclusion:</em><strong> </strong>Despite the small sample size, the large effect sizes found support the conclusion that<strong> </strong>the addition of a specific HIIT wushu sanda protocol to amateur athletes' training routine can lead to neuromuscular, aerobic and anaerobic performance improvements.</p>

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.

The effect of aquatic high-intensity interval training on aerobic performance, strength and body composition in a non-athletic population: systematic review and meta-analysis

2018 ◽  
Vol 33 (2) ◽  
pp. 157-170 ◽  
Author(s):  
Julie E Depiazzi ◽  
Rachel A Forbes ◽  
Noula Gibson ◽  
Nadine L Smith ◽  
Andrew C Wilson ◽  
...  
Keyword(s):  
Body Composition ◽  
Lower Limb ◽  
High Intensity ◽  
Interval Training ◽  
Risk Of Bias ◽  
Aerobic Performance ◽  
Control Group ◽  
High Intensity Interval Training ◽  
Athletic Population ◽  
High Intensity Interval

Objective: In a non-athletic population, to (1) investigate the effectiveness of high-intensity interval training in an aquatic environment (A-HIIT) on aerobic performance, strength, and body composition and (2) report on safety of this approach. Method: A systematic search was undertaken of six databases until May 2018. Trials were eligible for inclusion if they compared the effect of A-HIIT in a non-athletic population with a control group that received no exercise training. Data were extracted independently by two reviewers and meta-analyses were undertaken using a random effects model to produce standardized mean difference (SMD) and 95% confidence intervals (CIs). Risk of bias was assessed using Cochrane’s risk of bias tool. All studies were graded using Physiotherapy Evidence Database (PEDro) and Consensus for Exercise Reporting Template (CERT) scales to determine quality of reporting. Results: Eight studies reported over 13 papers met study criteria ( n = 377). Compared with a control group, those who completed a program of A-HIIT demonstrated greater aerobic performance (SMD 0.69 (95% CI 0.39–0.98); I2 = 0%; n = 191) and lower limb muscle strength (SMD 0.30 (95% CI 0.04–0.56); I2 = 0%; n = 237). No differences were seen in measures of body composition or the number of adverse events. All studies were at risk of performance bias. The (mean ± SD) PEDro and CERT scores were 4.9 ± 1.5 and 15.1 ± 2.1, respectively. Conclusion: In a non-athletic population, A-HIIT was safe and may have improved aerobic performance and lower limb strength. The exercise interventions were well described and monitoring and reporting of exercise intensity in water was feasible.

scholarly journals EFFECTS OF A 12 WEEK RECREATIONAL FOOTBALL AND HIGH-INTENSITY INTERVAL TRAINING ON PHYSICAL FITNESS IN OVERWEIGHT CHILDREN

2018 ◽  
pp. 435
Author(s):  
Nemanja Cvetković ◽  
Emilija Stojanović ◽  
Nenad Stojiljković ◽  
Dušan Nikolić ◽  
Zoran Milanović
Keyword(s):  
Physical Education ◽  
Physical Fitness ◽  
High Intensity ◽  
Biochemical Parameters ◽  
Interval Training ◽  
Control Group ◽  
Overweight Children ◽  
High Intensity Interval Training ◽  
High Intensity Interval ◽  
Intensity Of Exercise

The purpose of this study was to determine the effects of a 12 week recreational football and high-intensity interval training (HIIT) on physical fitness in overweight children. Forty-two overweight and obese boys aged 11-13 were randomly divided into three groups: HIIT group (n = 14), recreational football (n = 14) and a control group that attended regular physical education classes (n = 14). Physical fitness components were measured at baseline and after 12 weeks of training at the same time of the day and under similar conditions, including: countermovement jump (CMJ), sprint over 10 and 30 m, flexibility and biochemical parameters (leukocytes, erythrocytes, hemoglobin, glucose, total cholesterol, triglycerides). HIIT group increased explosive power of lower extremities by 7.16% (small ES), while the recreational football group recorded slightly less increase of 6.57% (small ES). HIIT led to a statistically significant increase (p<0.05) in the number of erythrocytes in the blood (8.90%). The recreational football program influenced the improvement of results in variables spreading lying on the back (6.21%) and the number of erythrocytes (↑ 9.11%). Twelve-weeks of recreational football and HIIT can lead to positive changes in muscle fitness, flexibility and biochemical parameters in overweight and obese children. Compared to the experimental groups, the control group noted minor changes in the aforementioned variables, which indicates the lack of intensity of exercise programs in regular classes of physical education.

scholarly journals Effects of a High-Intensity Interval Training Program on Body Composition and Physical Fitness in Female Field Hockey Players

2021 ◽  
Vol 39 (5) ◽  
pp. 1323-1330
Author(s):  
Yaquelina Quezada-Muñoz ◽  
Pablo Rodríguez-Artigas ◽  
Pablo Aravena-Sagardia ◽  
Mauricio Barramuño ◽  
Tomás Herrera-Valenzuela ◽  
...  
Keyword(s):  
Body Composition ◽  
Physical Fitness ◽  
Training Program ◽  
High Intensity ◽  
Interval Training ◽  
High Intensity Interval Training ◽  
Field Hockey ◽  
Hockey Players ◽  
High Intensity Interval
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