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.

scholarly journals Effects of High-Intensity Interval Training on Aerobic Capacity in Cardiac Patients: A Systematic Review with Meta-Analysis

2017 ◽  
Vol 2017 ◽  
pp. 1-16 ◽  
Author(s):  
Bin Xie ◽  
Xianfeng Yan ◽  
Xiangna Cai ◽  
Jilin Li
Keyword(s):  
Confidence Interval ◽  
Aerobic Capacity ◽  
High Intensity ◽  
Meta Analysis ◽  
Interval Training ◽  
Mean Difference ◽  
Cardiac Patients ◽  
Left Ventricular Ejection ◽  
High Intensity Interval Training ◽  
High Intensity Interval

Purpose. The aim of this study was to compare the effects of high-intensity interval training (INTERVAL) and moderate-intensity continuous training (CONTINUOUS) on aerobic capacity in cardiac patients.Methods. A meta-analysis identified by searching the PubMed, Cochrane Library, EMBASE, and Web of Science databases from inception through December 2016 compared the effects of INTERVAL and CONTINUOUS among cardiac patients.Results. Twenty-one studies involving 736 participants with cardiac diseases were included. Compared with CONTINUOUS, INTERVAL was associated with greater improvement in peak VO2(mean difference 1.76 mL/kg/min, 95% confidence interval 1.06 to 2.46 mL/kg/min,p<0.001) and VO2at AT (mean difference 0.90 mL/kg/min, 95% confidence interval 0.0 to 1.72 mL/kg/min,p=0.03). No significant difference between the INTERVAL and CONTINUOUS groups was observed in terms of peak heart rate, peak minute ventilation, VE/VCO2slope and respiratory exchange ratio, body mass, systolic or diastolic blood pressure, triglyceride or low- or high-density lipoprotein cholesterol level, flow-mediated dilation, or left ventricular ejection fraction.Conclusions. This study showed that INTERVAL improves aerobic capacity more effectively than does CONTINUOUS in cardiac patients. Further studies with larger samples are needed to confirm our observations.

scholarly journals High Intensity Interval Training (HIIT) Improves Cardiorespiratory Fitness (CRF) in Healthy, Overweight and Obese Adolescents: A Systematic Review and Meta-Analysis of Controlled Studies

2020 ◽  
Vol 17 (8) ◽  
pp. 2955 ◽  
Author(s):  
Rhona Martin-Smith ◽  
Ashley Cox ◽  
Duncan S. Buchan ◽  
Julien S. Baker ◽  
Fergal Grace ◽  
...  
Keyword(s):  
Cardiorespiratory Fitness ◽  
High Intensity ◽  
Meta Analysis ◽  
Interval Training ◽  
High Volume ◽  
Moderate Intensity ◽  
Control Group ◽  
High Intensity Interval Training ◽  
Meta Regression ◽  
High Intensity Interval

Background: High Intensity Interval Training (HIIT) is a sustainable and effective method for improving Cardiorespiratory Fitness (CRF) in adolescents. HIIT is proven to produce equal or greater improvements in CRF when compared to moderate intensity continuous exercise (MICE) in adolescents. Methods: The studies included were considered eligible if: (1) Participants were adolescents (11–18 years old); (2) Examined changes in CRF measured either directly or indirectly; (3) Included a non-exercising control group or MICE comparison group; (4) Participants were matched at enrolment; (5) Reported HIIT protocol information; (6) Provided HIIT intensity. A meta-analysis was conducted to determine the effect of HIIT on CRF. Meta-regression and moderator analyses were performed out to quantitatively examine moderators of protocol design on CRF improvements. Results: HIIT displays a moderate effect to improve CRF (g = 0.86, 95% CI 0.518–1.106, p < 0.001). Neither study duration (weeks), nor total or weekly accumulated HIIT volume (min) displayed any significant moderation effect on pooled improvement on CRF (p > 0.05). Conclusions: HIIT is an effective method to improve CRF in adolescents, irrespective of body composition. Notably, meta regression analysis identified that prolonged high volume HIIT programs are similarly effective to short term low volume HIIT programs. This becomes of particular interest for those involved in school curricula, where short HIIT exercise may provide a pragmatic adjunct to the health benefits of Physical Education (PE) lessons.

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.

High-Intensity Interval Training and Cardiometabolic Risk Factors in Children: A Meta-analysis

PEDIATRICS ◽  
2021 ◽  
Vol 148 (4) ◽  
pp. e2021050810
Author(s):  
Monserrat Solera-Martínez ◽  
Ángel Herraiz-Adillo ◽  
Ismael Manzanares-Domínguez ◽  
Lidia Lucas De La Cruz ◽  
Vicente Martínez-Vizcaíno ◽  
...  
Keyword(s):  
Risk Factors ◽  
High Intensity ◽  
Cardiometabolic Risk ◽  
Meta Analysis ◽  
Interval Training ◽  
Cardiometabolic Risk Factors ◽  
High Intensity Interval Training ◽  
High Intensity Interval

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 Two-Week High-Intensity Interval Training on Cognition in Adolescents – A Randomized Controlled Pilot Study

2017 ◽  
Vol 18 (2) ◽  
Author(s):  
Mari Stenman ◽  
Arto J. Pesola ◽  
Arto Laukkanen ◽  
Eero A. Haapala
Keyword(s):  
Reaction Time ◽  
High Intensity ◽  
Repeated Measures ◽  
Visual Memory ◽  
Interval Training ◽  
Control Group ◽  
High Intensity Interval Training ◽  
High Intensity Interval ◽  
Electronic Messaging ◽  
Larger Sample

AbstractWe investigated the effects of a two-week high-intensity interval training (HIT) on cognition in adolescents.The participants were recruited from local high schools with an electronic messaging system. The HIT group participated in 4 high-intensity interval running sessions and 2 circuit training sessions. The control group (CG) continued their usual habits. Reaction time, choose reaction time, working memory, visual memory, and learning were assessed by computerized CogState test battery. The intervention effect was investigated with repeated measures ANOVA and the effect size by Morris dppc2.The total of 25 participants aged 17–20 years participated in the baseline measurements and were randomized into the intervention (The study on HIT produced mixed effects on cognition in adolescents. Studies with a longer intervention period and larger sample sizes are warranted to further explore HIT effects on cognition.

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