High-intensity Interval Training Exercise Research Articles

Exercise-induced cortical disinhibition mediates the relationship between fitness and memory in older adults.

Regular exercise benefits learning and memory in older adults, but the neural mechanisms mediating these effects remain unclear. Evidence in young adults indicates that acute exercise creates a favourable environment for synaptic plasticity by enhancing cortical disinhibition. As such, we investigated whether plasticity-related disinhibition mediated the relationship between cardiorespiratory fitness and memory function in healthy older adults (n=16, mean age=66.06). Participants completed a graded maximal exercise test and assessments of visual and verbal memory, followed by two counterbalanced sessions involving 20min of either high-intensity interval training exercise or rest. Disinhibition was measured following intermittent theta burst stimulation via paired-pulse transcranial magnetic stimulation. In line with our hypotheses, we observed a positive correlation between cardiorespiratory fitness and verbal memory, which was mediated by plasticity-related cortical disinhibition. Our novel finding implicates cortical disinhibition as a mechanism through which the effects of acute bouts of exercise may translate to improved memory in older adults. This finding extends current understanding of the physiological mechanisms underlying the positive influence of cardiorespiratory fitness for memory function in older adults, and further highlights the importance of promoting exercise engagement to maintain cognitive health in later life. KEY POINTS: There are well established benefits of regular exercise for memory function in older adults, but the mechanisms are unclear. Cortical disinhibition is important for laying down new memories, and is enhanced following acute exercise in young adults, suggesting it is a potential mechanism underlying these benefits in ageing. Older adults completed a fitness test and assessments of memory, followed by two sessions involving either 20min of exercise or rest. Disinhibition was measured following intermittent theta burst stimulation via paired-pulse transcranial magnetic stimulation. Cardiorespiratory fitness was positively associated with memory performance. Higher fitness was associated with enhanced cortical disinhibition following acute exercise. Cortical disinhibition completely mediated the relationship between fitness and memory. This novel finding provides a mechanistic account for the positive influence of cardiorespiratory fitness on memory in later life, and emphasises the importance of regular exercise for cognitive health in older populations.

Effects of high-intensity interval exercise training on knee health and articular cartilage volume in patients with obesity: A comparative study between bicycle and treadmill groups

ObjectiveIt's a comparative study between bicycle and treadmill groups to observe the effects of high-intensity interval exercise training on knee health and articular cartilage volume in patients with obesity, thus to provide a scientific basis for the healthy exercise methods to lose weight. Methods60 patients with simple obesity were randomly divided into two groups of 30: the bicycle group and the treadmill group. Both groups received high-intensity interval exercise training, power bicycle training and moving treadmill training (MTT) were accepted respectively. Both groups received consecutive treatment for 12 weeks, five times a week, and every single time lasted for 30 min. Before and after treatment, the body mass index (BMI), the knee's articular cartilage volume was measured with magnetic resonance imaging (MRI),the pain of knee was assessed with visual analogue scale (VAS). Before and after each training session, the local skin temperature of the knee was measured with an electronic thermometer. ResultsAfter 12 weeks of treatment, the BMI was both decreased, the VAS and the local skin temperature of knee was increased significantly, the knee's articular cartilage volume in the treadmill group was reduced significantly, while the above indicators in the bicycle group did not change significantly, and the difference between the two groups was statistically significant (p < 0.001). ConclusionPower bicycle training can avoid a decrease in the volume of knee joint cartilage, while MTT can easily lead to a decrease in the volume of knee joint cartilage, an increase in local skin temperature and pain of knee joint.

Selenoprotein P in a Rodent Model of Exercise; Theorizing Its Interaction with Brain Reward Dysregulation, Addictive Behavior, and Aging.

Exercise promotes health and wellness, including its operation as a protective factor against a variety of psychological, neurological, and chronic diseases. Selenium and its biomarker, selenoprotein P (SEPP1), have been implicated in health, including cancer prevention, neurological function, and dopamine signaling. SEPP1 blood serum levels were compared with a one-way ANOVA between sedentary (SED), moderately exercised (MOD) [10 m/min starting at 10 min, increasing to 60 min], and high-intensity interval training (HIIT) exercised rats [30 min in intervals of 2-min followed by a 1-min break, speed progressively increased from 10 to 21 m/min]. HIIT rats showed significantly higher serum SEPP1 concentrations compared to MOD and SED. More specifically, HIIT exercise showed an 84% increase in SEPP1 levels compared to sedentary controls. MOD rats had greater serum SEPP1 concentrations compared to SED, a 33% increase. The results indicated that increased exercise intensity increases SEPP1 levels. Exercise-induced increases in SEPP1 may indicate an adaptive response to the heightened oxidative stress. Previous studies found a significant increase in dopamine D2 receptor (D2R) binding in these same rats, suggesting a potential association between SEPP1 and dopamine signaling during exercise. Modulating antioxidants like SEPP1 through personalized therapies, including exercise, has broad implications for health, disease, and addiction.

High-intensity interval training (HIIT) and slow breathing interventions alleviate premature ejaculation (PE) symptoms

BackgroundPhysical exercise may alleviate premature ejaculation symptoms, a prevalent male sexual dysfunction linked to a series of negative outcomes for men and their partners. ObjectiveWe investigated the effectiveness of high-intensity interval training (HIIT) and slow breathing interventions on premature ejaculation symptoms and their relation to autonomic activity and attention regulation. MethodChinese adult men (N = 76, M = 21.89, SD = 3.32) with premature ejaculation completed one of the two-week interventions in their homes or as participants in a normal breathing control group; they reported their age, height, weight, physical activity level, premature ejaculation symptoms, and attention regulation. In the HIIT group, 26 participants engaged in a 7-minute HIIT each day. In the slow breathing group, 25 participants performed 7-minute slow breathing exercises per day while the 25 participants in the normal breathing group similarly performed normal breathing exercises. All participants measured their heart rate once before and five times (with one-minute intervals) after the intervention. When participants had penile-vaginal sex with their partners, they measured their heart rate once after ejaculation. ResultsTime × Intervention interaction was significant with lower levels of premature ejaculation symptoms on Days 12, 13, and 14 in the HIIT group (M ± SD = 16.19 ± 3.45, 15.96 ± 3.43, and 15.15 ± 3.62) compared to the normal breathing group (M ± SD = 17.68 ± 3.06, 17.68 ± 3.15, and 17.44 ± 3.25). Higher levels of attention regulation were associated with fewer premature ejaculation symptoms. We also found that a larger increase in heart rate from resting to after sex was associated with fewer premature ejaculation symptoms. ConclusionCompared to the control group, the efficacy of two weeks of HIIT exercise in mitigating PE symptoms suggests its potential as a novel treatment for PE.

Psychophysiological Responses to High-Intensity Interval Training Exercise over Menstrual Cycle Phases: An Exploratory Study.

Although there is potential for the menstrual cycle to impact psychophysiological responses to exercise, there has been a paucity of studies investigating this aspect, specifically in the context of high-intensity interval training (HIIT). This exploratory study aimed to examine the psychophysiological responses to HIIT over the menstrual cycle. Twenty-three healthy and physically active young women were recruited. Each woman completed a cycle ergometer HIIT session in the menstrual, follicular, and luteal phases of the menstrual cycle in a random order. Psychophysiological variables of interest were collected at baseline, and during and after exercise. Primary variables of interest were anxiety, mood, motivation, enjoyment, arousal, affect, and menstrual distress. Higher pain, water retention, behavior change (related to social interactions, eating habits, and self-performance), and autonomic reactions (consisting of nausea, dizziness, hot flashes, and cold sweats) were observed before HIIT during the menstrual phase compared to the follicular phase (p < 0.05). Participants exhibited worse psychological responses to HIIT sessions during the menstrual phase, followed by the luteal phase. Findings also noted participants arrived to the laboratory with lower motivation to initiate HIIT sessions during the luteal and menstrual phases compared to the follicular phase. This difference was observed before and during HIIT. Motivation and depressive symptoms showed a significant reduction from pre-HIIT to post-HIIT (p < 0.05), regardless of menstrual phase. The findings revealed that the menstrual cycle had a significant impact on psychophysiological responses. Moreover, HIIT could be adopted to improve motivation and depressive symptoms, however, further research is needed to explore the effects of HIIT across the menstrual cycle in women with clinical depression.

The Effect of HIIT on Increasing VO2 Max in White Water Rafting Athletes

This research was carried out to find out the effect of training using the High Intensity Interval Training (HIIT) model on increasing VO2 Max in white water rafting athletes. This research design is an experimental pre-post design. This research used 28 white water rafting athletes, consisting of 16 male athletes and 12 female athletes. The athlete's age range is 16-22 years. All research subjects were in healthy condition. All subjects were given the same treatment, namely training using the HIIT model. Intervention with HIIT cardio training. The HIIT training model uses an intensity of 90-100% of Maximal Heart Rate (MHR). HIIT is done with a ratio of 30 seconds of exercise then 3 minutes of rest. Exercise uses an intensity of 90% MHR in the first week and will be increased every week until it reaches 100% MHR. Exercises were carried out for 6 weeks with a frequency of 4x per week. VO2 Max measurements are carried out using a multistage test instrument. In this research, it can be seen that HIIT exercise carried out for 6 weeks with a frequency of 4 times per week can increase athletes' VO2 Max. There is a significant difference in VO2 Max between male and female athletes with a difference test result of P &lt; 0.05. Exercise using the HIIT model which is carried out for 6 weeks with a frequency of 4x a week can increase the VO2 Max of white water rafting athletes. HIIT training can be used as a recommendation to increase VO2 Max for white water rafting athletes.

A Review of High-Intensity Interval Training in Heart Transplant Recipients: Current Knowledge and Future Perspectives.

This review reports how exercise-based rehabilitation strategies have developed over the past decades, and it specifically focuses on the effectiveness, safety, and implementation of high-intensity interval training (HIIT). It provides an overview of the historical progression, main research findings, and considerations surrounding HIIT as the preferred exercise modality for recipients of heart transplant (HTx). The review includes a timeline of studies spanning from 1976-2023. The 2017 Cochrane systematic review on exercise-based cardiac rehabilitation in recipients of HTx serves as the main knowledge base (≥2015). Additionally, literature searches in PubMed/Medline and ClinicalTrials.gov have been performed, and all reviews and studies reporting the effects of moderate- to high-intensity exercise in recipients of HTx, published in 2015 or later have been screened. High-intensity interval training has gained prominence as an effective exercise intervention for recipients of HTx, demonstrated by an accumulation of performed studies in the past decade, although implementation in clinical practice remains limited. Early restrictions on HIIT in HTx recipients lacked evidence-based support, and recent research challenges these previous restrictions. High-intensity interval training results in greater improvements and benefits compared with moderate-intensity continuous training in the majority of studies. While HIIT is now regarded as generally suitable on a group level, individual assessment is still advised. The impact of HIIT involves reinnervation and central and peripheral adaptations to exercise, with variations in recipent responses, especially between de novo and maintenance recipients, and also between younger and older recipients. Long-term effects and mechanisms behind the HIIT effect warrant further investigation, as well as a focus on optimized HIIT protocols and exercise benefits.

Moderate-Intensity and High-Intensity Interval Exercise Training Offer Equal Cardioprotection, with Different Mechanisms, during the Development of Type 2 Diabetes in Rats.

Endurance exercise training is a promising cardioprotective strategy in type 2 diabetes mellitus (T2DM), but the impact of its intensity is not clear. We aimed to investigate whether and how isocaloric moderate-intensity exercise training (MIT) and high-intensity interval exercise training (HIIT) could prevent the adverse cardiac remodeling and dysfunction that develop T2DM in rats. Male rats received a Western diet (WD) to induce T2DM and underwent a sedentary lifestyle (n = 7), MIT (n = 7) or HIIT (n = 8). Insulin resistance was defined as the HOMA-IR value. Cardiac function was assessed with left ventricular (LV) echocardiography and invasive hemodynamics. A qPCR and histology of LV tissue unraveled underlying mechanisms. We found that MIT and HIIT halted T2DM development compared to in sedentary WD rats (p < 0.05). Both interventions prevented increases in LV end-systolic pressure, wall thickness and interstitial collagen content (p < 0.05). In LV tissue, HIIT tended to upregulate the gene expression of an ROS-generating enzyme (NOX4), while both modalities increased proinflammatory macrophage markers and cytokines (CD86, TNF-α, IL-1β; p < 0.05). HIIT promoted antioxidant and dicarbonyl defense systems (SOD2, glyoxalase 1; p < 0.05) whereas MIT elevated anti-inflammatory macrophage marker expression (CD206, CD163; p < 0.01). We conclude that both MIT and HIIT limit WD-induced T2DM with diastolic dysfunction and pathological LV hypertrophy, possibly using different adaptive mechanisms.

Acute High-Intensity Interval Training Improves Esport Performance in Super Smash Brothers Ultimate Competitors

Acute exercise has been shown to improve scores on tests of cognitive function. The cognitive variables that improve with acute exercise are also associated with esport performance. This randomized control trial examined whether performing a high-intensity interval training (HIIT) exercise bout prior to esport competitions produced improvement in Super Smash Brothers Ultimate performance compared with the control group of college-aged e-athletes who did not perform a precompetition HIIT session (n = 28). Both competitions consisted of a round-robin style of play wherein all players in each group faced each other in head-on sets. Competition results after sedentary and after HIIT exercise were compared. Logistic regression indicated that HIIT increased the probability of winning a Super Smash Brothers Ultimate set by approximately twofold (p = .006). These data suggest that HIIT acutely improves esport performance.

Comparative Evaluation of High-Intensity Interval Training (HIIT) and Traditional Aerobic Exercise for Cardiovascular Health in Stroke Survivors: A Randomized Controlled Trial

Background: Stroke survivors often face significant challenges in regaining cardiovascular health, with exercise being a key component of rehabilitation. High-Intensity Interval Training (HIIT) and Traditional Aerobic Exercise are two prominent modalities aimed at improving cardiovascular outcomes in this population. Objective: The study aimed to compare the effects of HIIT and Traditional Aerobic Exercise on cardiovascular health in stroke survivors. Methods: This randomized clinical trial enrolled 46 stroke survivors, equally divided into HIIT and Traditional Aerobic Exercise groups. The study took place at Sadique Polly Clinic, Nawab Town, Lahore, Pakistan. Participants underwent baseline assessments for resting heart rate, systolic and diastolic blood pressure, and total cholesterol levels. Post-intervention, these parameters were re-evaluated. Data analysis involved using SPSS version 25 to compare the effects of the two exercise modalities on cardiovascular health outcomes. Results: Both groups demonstrated improvements in cardiovascular health, but the HIIT group showed a more significant reduction in resting heart rate (change of -5.7 ± 2.9 bpm) compared to the Traditional Aerobic Exercise group (change of -3.9 ± 2.4 bpm), with a p-value of 0.03. Changes in systolic blood pressure (-9.2 ± 4.3 mmHg in HIIT vs. -7.6 ± 3.8 mmHg in Traditional), diastolic blood pressure (-4.3 ± 2.1 mmHg in HIIT vs. -3.7 ± 1.9 mmHg in Traditional), and total cholesterol levels (-11.1 ± 5.2 mg/dL in HIIT vs. -9.5 ± 4.7 mg/dL in Traditional) were observed in both groups but did not reach statistical significance (p &gt; 0.05). Conclusion: Both HIIT and Traditional Aerobic Exercise are effective in enhancing cardiovascular health in stroke survivors. However, HIIT may offer a greater advantage in reducing resting heart rate compared to Traditional Aerobic Exercise.

MACHINE LEARNING APPROACHES FOR CALORIE BURN ANALYSIS AND PREDICTION

Aim: It is widely acknowledged that running is the most effective activity for burning maximum calories per hour. Additionally, fixed bicycling, swimming, and HIIT (High-Intensity Interval Training) exercises are also excellent choices for calorie burning. HIIT exercises, in particular, have been shown to continue calorie burning for up to 24 hours after the workout. However, accurately predicting the number of calories burned during a specific exercise remains a challenge due to variations in individual physiology and fitness levels. To address this challenge, we utilized an exercise dataset obtained from the UCI Machine Learning repository to forecast the calories burned during different exercises. Methodology: Many individuals are curious about the calories burned during their workouts and the effectiveness of their weight loss plans. To tackle this issue, we employed machine learning algorithms such as XGBoost regressor and Linear Regression. Results: The results demonstrate that XGBoost regressor and Linear Regression outperform other approaches in predicting calorie expenditure during exercise. KEYWORDS— Machine learning, precision, accuracy, classification, XGBoost regressor, Linear Regression.

High intensity interval training exercise increases dopamine D2 levels and modulates brain dopamine signaling.

Previous research has outlined the health benefits of exercise including its therapeutic potential for substance use disorders (SUD). These data have already been utilized and it is now common to find exercise as part of SUD treatment and relapse prevention programs. However, we need to better understand different exercise regimens and determine which would be the most beneficial for SUDs. Recently, high intensity interval training (HIIT) has gained attention in comparison with aerobic and resistance exercise. Little is known regarding the neurobiological mechanisms of HIIT, including its effects on dopamine signaling and receptor levels in the brain. The present study examined the effects of chronic HIIT exercise on dopamine signaling as measured by dopamine type 1-like receptor (D1R)-like, dopamine type 2-like receptor (D2R)-like, and tyrosine hydroxylase (TH) quantification in the brains of male and female rats as measured by [3H] SCH 23390 and [3H] spiperone autoradiography, and TH-immunoreactive optical density values. Rats were separated in two groups: sedentary and HIIT exercise. Exercise was on a treadmill for 30 min daily (10 3 min cycles) for six weeks with progressive speed increased up to 0.8 mph (21.5 m/min). Results showed for D2R-like binding, a significant effect across the ventral caudate putamen (V CPU) between sexes, such that mean D2R-like binding was 14% greater for males than females. In the nucleus accumbens shell (Nac Shell), the HIIT Exercise rats showed 16% greater D2R-like binding as compared to the sedentary rats. No significant effects of HIIT exercise were found across groups for brain D1R-like binding levels or TH expression. These results suggest that HIIT exercise can modulate dopamine signaling by way of increased D2R. These findings support the premise that HIIT exercise plays an important role in dopamine signaling and, may provide a potential mechanism for how HIIT exercise can impact the brain and behavior.

Diabetic cardiomyopathy in rats was attenuated by endurance exercise through the inhibition of inflammation and apoptosis

Diabetic cardiomyopathy (DCM), as a ventricular dysfunction, is one of the main causes of death in diabetic patients. Former evidence revealed the beneficial effects of exercise on cardiovascular complications of diabetes. We aimed to investigate the effects of high-intensity interval training (HIIT) and moderate-intensity continuous training (MICT) on DCM. Male Wistar rats were divided into control, diabetic, metformin (300 mg/kg), HIIT, MICT, metformin + HIIT, and metformin + MICT diabetic groups. Serum biochemical, inflammatory, and oxidative stress indicators, gene expression of BCL2 and BAX, and histopathologic changes of cardiac tissue were assessed. Our analysis revealed an increase in fasting blood sugar (FBS), creatine kinase MB (CK-MB), lactate dehydrogenase (LDH), and aspartate aminotransferase (AST) in diabetes. Also, the superoxide dismutase (SOD) and catalase (CAT) activity, and the total thiol were decreased, in contrast, malondialdehyde (MDA) levels increased in the cardiac tissue of the diabetic group. All of these changes were significantly ameliorated in diabetic animals treated with exercise and metformin + exercise. The level of tumor necrosis factor-α (TNF-α) and Interleukin-1β (IL-1β), as well as the infiltration of inflammatory cells, were decreased in the heart of all exercise training groups. Up-regulation of BCL2 and down-regulation of BAX gene expressions were observed in the cardiac tissue of all exercise-treated groups. In conclusion, HIIT and MICT exercises are effective in preventing DCM development. Exercise training, besides improving oxidative stress and inflammation in cardiac tissue, alleviates cardiac damage by modulating the apoptotic gene expression in diabetic rats.

The Effect of 6 Weeks of Combination of Three Cone Exercise Using Ball and High-Intensity Interval Training on the Agility and Dribbling Ability of Student Futsal Athletes

Study purpose. Three-Cone Drill using the Ball (TCDB) High-Intensity Interval Training (HIIT) is an exercise that requires players to perform fast movements and sharp changes of direction using a ball over three cones with high intensity. This exercise is based on the application of specific training principles using the ball and the principle of overload, which aims to improve agility and dribbling skills. This study aimed to evaluate the effect of TCDB+HIIT on the agility and dribbling ability of student futsal athletes. Materials and methods. This study used an experimental method with a One-Group Pretest-Posttest Design. The participants in this study were student futsal athletes, totaling 14 players aged 16.6±0.7 years, with body height 170.2±3.36 cm, body mass of 59±9.11 kg, and BMI 20.4±3.25. The research instruments used were the Illinois Agility Test and the futsal dribbling test. Data analysis used the Paired Samples T-Test at a significance level of 0.05; the prerequisite test used was the Shapiro-Wilk test. Results. Based on the results of the Paired Samples T-Test test, it was found that the sig value (2-tailed) of the speed variable was 0.001 &lt; 0.05, with an increase of 0.99 ± 0.57. In the dribbling variable, the sig (2-tailed) value is 0.001 &lt; 0.05, with an increase of 1.88 ± 1.722. Conclusions. This study concludes that TCDB + HIIT exercises are effectively applied to increase futsal players’ agility and dribbling abilities.

Intense interval exercise induces greater changes in post-exercise metabolism compared to submaximal exercise in middle-aged adults.

High-intensity interval training (HIIT) and sprint interval training (SIT) consistently elevate post-exercise metabolism compared to moderate-intensity continuous training (MICT) in young adults (18-25years), however few studies have investigated this in middle-aged adults. To assess the effect of exercise intensity on post-exercise metabolism following submaximal, near-maximal, and supramaximal exercise protocols in middle-aged adults. 12 participants (8 females; age: 44 ± 10years; O2max: 35.73 ± 9.97mL·kg-1min-1) had their oxygen consumption ( O2) measured during and for 2h following 4 experimental sessions: (1) no-exercise control (CTRL); (2) MICT exercise (30min at 65% O2max); (3) HIIT exercise (10 × 1min at 90% maximum heart rate with 1min rest); and (4) modified-SIT exercise (8 × 15s "all-out" efforts with 2min rest). Between session differences for O2 and fat oxidation were compared. O2 consumed post-exercise was elevated during the 1st h and 2nd h following HIIT (15.9 ± 2.6, 14.7 ± 2.3L; P < 0.036, d > 0.98) and modified-SIT exercise (16.9 ± 3.3, 15.30 ± 3.4L; P < 0.041, d > 0.96) compared to CTRL (13.3 ± 1.9, 12.0 ± 2.5 L) while modified-SIT was also elevated vs HIIT in the 1st h (P < 0.041, d > 0.96). Total post-exercise O2 consumption was elevated following all exercise sessions (MICT: 27.7 ± 4.1, HIIT: 30.6 ± 4.8, SIT: 32.2 ± 6.6L; P < 0.027, d > 1.03) compared to CTRL (24.9 ± 4.1L). Modified-SIT exercise increased fat oxidation (0.103 ± 0.019gmin-1) compared to all sessions post-exercise (CTRL: 0.059 ± 0.025, MICT: 0.075 ± 0.022, HIIT: 0.081 ± 0.021g·min-1; P < 0.007, d > 1.30) and HIIT exercise increased compared to CTRL (P = 0.046, d = 0.87). Exercise intensity has an important effect on post-exercise metabolism in middle-aged adults.

The effects of high-intensity interval training at the anaerobic and psychomotor fatigue thresholds on physiological parameters in young soccer players: a prospective study.

This study aimed to investigate the effects of a 4-week specific high-intensity interval training (HIIT) program performed between the anaerobic threshold (ANT) and the psychomotor fatigue threshold (PFT) on physiological parameters in 14 professional soccer players at the under-17 level. The first and second stages of the research protocol included a treadmill running exercise with increasing load and six 3-min four-versus-four games of soccer with a 3-min break between games. Players then participated in a training microcycle involving three specific HIIT exercises twice per week for 4 weeks, after which they repeated stages one and two, followed by an assessment of changes. The measurement of lactate (LA) determined ANT, whereas the choice reaction time (CRT) indicated PFT among other selected physiological parameters. The repeated-measure analysis of variance (ANOVA) compared mean values for the examined variables using Bonferroni post hoc test. It demonstrated significantly increased maximal oxygen consumption (VO2 max) from 45.9 ± 3.0 to 48.7 ± 2.6at the ANT and from 49.1 ± 3.4 to 52.0 ± 3.6 on the PFT after 4 weeks of training. A significant increase in the running speed (RS) at both thresholds and heart rate (HR) at the ANT (p ≤ 0.05) was also recorded. Moreover, the players exceeded their intensity of effort during ANT while playing four-versus-four soccer matches, but they did not reach intensity during PFT. In conclusion, the findings of the study demonstrated that both thresholds shifted toward higher loads and the proposed specific HIIT effectively increased the exercise capacity of soccer players.

Psychological Responses Before And After High-Intensity Interval Training Exercise Across Menstrual Cycle Phases

Psychological Responses Before And After High-Intensity Interval Training Exercise Across Menstrual Cycle Phases

Impact Of Menstrual Cycle Phase On Acute Psychophysiological Responses During High-Intensity Interval Training Exercise

Impact Of Menstrual Cycle Phase On Acute Psychophysiological Responses During High-Intensity Interval Training Exercise

Comparison of Water-Based and Land-Based High-Intensity Interval Training Effects on Aerobic Capacity and Spinal Stabilization

The purpose of the study is to examine the effects of a two-week period of high-intensity interval training (HIIT) in water and land-based running on aerobic capacity and spinal stabilization. Forty-one healthy young participants were divided into water-based exercise, land-based exercise, and control groups. Aerobic capacity was measured with 20-m Shuttle Run Test, and spinal stabilization was tested with 60° Flexion test and Sorensen test. Water and land-based exercise groups performed six sessions of HIIT program for two weeks. A significant improvement in aerobic capacity and spinal stabilization was found between the baseline and after two-week evaluations in both the water and land based HIIT exercise groups (p

Evaluating a Telemedicine Video Game-Linked High-Intensity Interval Training Exercise Programme in Paediatric Heart Transplant Recipients.

Paediatric heart transplant recipients (HTRs) have reduced exercise capacity, physical activity (PA), health-related quality of life (HRQoL), and self-efficacy towards PA. Exercise interventions have demonstrated improvements in exercise capacity and functional status in adult HTRs, with a specific emerging interest in the role of high-intensity interval training (HIIT). Studies of exercise interventions in paediatric HTRs have been limited and nonrandomized to date. HIIT has not yet been evaluated in paediatric HTRs. We thus seek to evaluate the safety and feasibility of a randomized crossover trial of a 12-week, home-based, video game-linked HIIT intervention using a cycle ergometer with telemedicine and remote physiological monitoring capabilities (MedBIKE) in paediatric HTRs. The secondary objective is to evaluate the impact of the intervention on (1) exercise capacity, (2) PA, (3) HRQoL and self-efficacy towards PA, and (4) sustained changes in secondary outcomes at 6 and 12 months after intervention. After a baseline assessment of the secondary outcomes, participants will be randomized to receive the MedBIKE intervention (12 weeks, 36 sessions) or usual care. After the intervention and a repeated assessment, all participants will cross over. Follow-up assessments will be administered at 6 and 12 months after the MedBIKE intervention. We anticipate that the MedBIKE intervention will be feasible and safely yield sustained improvements in exercise capacity, PA, HRQoL, and self-efficacy towards PA in paediatric HTRs. This study will serve as the foundation for a larger, multicentre randomized crossover trial and will help inform exercise rehabilitation programmes for paediatric HTRs.