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 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.

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 A pilot study of high-intensity interval training in older adults with treatment naïve chronic lymphocytic leukemia

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Grace MacDonald ◽  
Andrea Sitlinger ◽  
Michael A. Deal ◽  
Erik D. Hanson ◽  
Stephanie Ferraro ◽  
...  
Keyword(s):  
Older Adults ◽  
Aerobic Capacity ◽  
High Intensity ◽  
Nk Cell ◽  
Interval Training ◽  
Lymphocytic Leukemia ◽  
Muscle Endurance ◽  
High Intensity Interval Training ◽  
Treatment Naïve ◽  
High Intensity Interval

AbstractChronic lymphocytic leukemia (CLL) is the most common leukemia in the USA, affecting predominantly older adults. CLL is characterized by low physical fitness, reduced immunity, and increased risk of secondary malignancies and infections. One approach to improving CLL patients’ physical fitness and immune functions may be participation in a structured exercise program. The aims of this pilot study were to examine physical and immunological changes, and feasibility of a 12-week high-intensity interval training (HIIT) combined with muscle endurance-based resistance training on older adults with treatment naïve CLL. We enrolled eighteen participants with CLL aged 64.9 ± 9.1 years and assigned them to groups depending on distance lived from our fitness center. Ten participants (4 M/6F) completed HIIT and six participants (4 M/2F) completed a non-exercising control group (Controls). HIIT consisted of three 30-min treadmill sessions/week plus two concurrent 30-min strength training sessions/week. Physical and immunological outcomes included aerobic capacity, muscle strength and endurance, and natural killer (NK) cell recognition and killing of tumor cells. We confirmed feasibility if > 70% of HIIT participants completed > 75% of prescribed sessions and prescribed minutes, and if > 80% of high-intensity intervals were at a heart rate corresponding to at least 80% of peak aerobic capacity (VO2peak). Results are presented as Hedge’s G effect sizes (g), with 0.2, 0.5 and 0.8 representing small, medium and large effects, respectively. Following HIIT, leg strength (g = 2.52), chest strength (g = 1.15) and seated row strength (g = 3.07) were 35.4%, 56.1% and 39.5% higher than Controls, respectively, while aerobic capacity was 3.8% lower (g = 0.49) than Controls. Similarly, following HIIT, in vitro NK-cell cytolytic activity against the K562 cell line (g = 1.43), OSU-CLL cell line (g = 0.95), and autologous B-cells (g = 1.30) were 20.3%, 3.0% and 14.6% higher than Controls, respectively. Feasibility was achieved, with HIIT completing 5.0 ± 0.2 sessions/week and 99 ± 3.6% of the prescribed minutes/week at heart rates corresponding to 89 ± 2.8% of VO2peak. We demonstrate that 12-weeks of supervised HIIT combined with muscle endurance-based resistance training is feasible, and that high adherence and compliance are associated with large effects on muscle strength and immune function in older adults with treatment naïve CLL.Trial registration: NCT04950452.

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