scholarly journals Effect of home-based high-intensity interval training and behavioural modification using information and communication technology on cardiorespiratory fitness and exercise habits among sedentary breast cancer survivors: habit-B study protocol for a randomised controlled trial

BMJ Open ◽  
2019 ◽  
Vol 9 (8) ◽  
pp. e030911 ◽  
Author(s):  
Katsunori Tsuji ◽  
Eisuke Ochi ◽  
Ryo Okubo ◽  
Yoichi Shimizu ◽  
Aya Kuchiba ◽  
...  
Keyword(s):  
Breast Cancer ◽  
Cardiorespiratory Fitness ◽  
Breast Cancer Survivors ◽  
Controlled Trial ◽  
Interval Training ◽  
Wearable Device ◽  
Treatment As Usual ◽  
Home Based ◽  
High Intensity Interval ◽  
Randomised Controlled

IntroductionMaintaining high levels of physical activity helps to maintain and improve physical health and quality of life, and plays a role in reducing adverse effects due to cancer treatments. Moreover, a greater degree of cardiorespiratory fitness is associated with reduced risk of all-cause mortality. However, there are no home-based programme for improving cardiorespiratory fitness using body weight exercises for breast cancer survivors. This study will assess the efficacy of the newly developed habit-B programme on maximum oxygen uptake compared with treatment as usual with wearable device. The effects of this programme on exercise habits, level of physical activity, physical fitness and subjective indices will also be investigated.Methods and analysisThis is a 12-week, parallel-group, single-blind, randomised controlled trial. Allocation will be managed by a central server using a computer-generated random allocation sequence provided by an independent data centre. Participants will be assigned to the habit-B programme (high-intensity interval training, exercise counselling + guidance, home-based exercise support using information and communication technology, and a wearable device) or treatment as usual with a wearable device. Subjects will be sedentary women aged 20–59 years who have received breast surgery in the past 2–13 months after the diagnosis of invasive breast cancer (stages I–IIa) and have never received chemotherapy except for hormone therapy. The primary endpoint is the change in peak oxygen uptake (VO2peak; mL/kg/min) between the groups after 12 weeks of intervention.Ethics and disseminationThe study protocol was approved by the Institutional Review Board of the National Cancer Center Japan on 28 February 2019 (ID: 2018-347). The findings will be disseminated through peer-reviewed publications and conference presentations.Trial registration numberUMIN000036400.

scholarly journals Cardiorespiratory fitness in breast cancer survivors: a randomised controlled trial of home-based smartphone supported high intensity interval training

2021 ◽  
pp. bmjspcare-2021-003141
Author(s):  
Eisuke Ochi ◽  
Katsunori Tsuji ◽  
Tomomi Narisawa ◽  
Yoichi Shimizu ◽  
Aya Kuchiba ◽  
...  
Keyword(s):  
Breast Cancer ◽  
Cancer Survivors ◽  
Breast Cancer Survivors ◽  
Early Stage ◽  
Controlled Trial ◽  
Interval Training ◽  
Control Group ◽  
Home Based ◽  
High Intensity Interval ◽  
Randomised Controlled

BackgroundA strategy for maintaining and/or improving cardiorespiratory fitness (CRF) in the growing population of cancer survivors is of major clinical importance, especially in the COVID-19 era. The effect of unsupervised high-intensity interval training (HIIT) on increasing CRF in breast cancer survivors is unknown.PurposeThe purpose of this study was to determine whether the newly developed habit-B programme, which involves home-based smartphone-supported HIIT using body weight exercises, improves CRF in early-stage breast cancer survivors.MethodsThis single-centre, 12-week, parallel-group, single-blind, randomised controlled trial involved 50 women with stage I–IIa breast cancer, aged 20–59 years, who had completed initial treatment except for hormone therapy. Participants were randomised to either the exercise or control group. The primary outcome was the 12-week change in peak oxygen uptake (V˙O2peak). Other outcomes included muscle strength, 6 min walk test, resting heart rate, physical activity, fatigue, safety and quality of life.ResultsThe change in V˙O2peak and leg strength increased significantly in the exercise group compared with the control group (p<0.01). Changes in other outcomes were not significantly different between the groups.ConclusionA home-based HIIT intervention can lead to improve CRF and muscle strength in early-stage breast cancer survivors.

scholarly journals The effect of home-based low-volume, high-intensity interval training on cardiorespiratory fitness, body composition and cardiometabolic health in women of normal body mass and those with overweight or obesity: protocol for a randomized controlled trial

2019 ◽  
Vol 11 (1) ◽  
Author(s):  
Emmanuel Frimpong ◽  
Chloe Dafkin ◽  
Janine Donaldson ◽  
Aletta Maria Esterhuyse Millen ◽  
Rebecca Mary Meiring
Keyword(s):  
Body Composition ◽  
Body Mass ◽  
Cardiorespiratory Fitness ◽  
Controlled Trial ◽  
Interval Training ◽  
Overweight And Obesity ◽  
Cardiometabolic Health ◽  
High Intensity Interval Training ◽  
Home Based ◽  
High Intensity Interval

Abstract Background There is a high prevalence of women in South Africa with overweight and obesity which is associated with an increased risk of cardiometabolic disorders. Perceived barriers such as lack of time and motivation reduce engagement in beneficial activity behaviours for health. High-intensity interval training (HIIT) is a time-efficient and effective way to improve cardiometabolic risk profile regardless of a loss in body mass or change in body composition. This randomized controlled trial aims to determine the effects on cardiorespiratory fitness, body composition and cardiometabolic health and feasibility of a home-based 14-week HIIT program in women with overweight/obesity or normal body mass. Methods One hundred and twenty women (18–40 years old) with a body mass index between 20 and 35 kg/m2, will be stratified according to their BMI (normal, BMI 20–24.9 kg/m2; or high BMI ≥25 kg/m2) and randomized into a HIIT exercising group (HIIT) or a non-exercising control group (CON). HIIT participants will perform exercises for 11 min/session six times per week for a period of 14 weeks. The 2 × 4 HIIT protocol will require a work phase of own-body weight exercise lasting 2 minutes (85% VO2peak), repeated four times and separated by a one-minute active rest phase (65% VO2peak). CON participants will be asked to maintain their normal habitual lifestyle. Outcomes of cardiorespiratory fitness, body composition, echocardiography, central blood pressure, arterial stiffness and biomarkers of cardiometabolic health will be measured before and after the 14-week intervention. Every 4 weeks during the intervention, an objective estimation of compliance to the study protocol will be assessed by measuring participant physical activity over 7 days using an Actigraph GT3X accelerometer. Discussion Supervised laboratory-based HIIT interventions are effective in improving cardiometabolic health. More pragmatic exercise protocols may however show to be successful for mitigating barriers to the engagement in physical activity and exercise resulting in positive benefits to health. Investigation into home-based HIIT regimens are important in women, where globally the rising trend of overweight and obesity overshadows that of men. The results from this study may therefore inform future research on effective exercise prescription for women’s health. Trial registration Pan African Clinical Trial Registry (www.pactr.org - id no: PACTR201806003434299), 6th June 2018.

scholarly journals Exploration of High-Intensity Interval Training for Breast Cancer Survivors: Taking a Home-based Approach Toward New Normal

2020 ◽  
Author(s):  
Katsunori Tsuji ◽  
Yutaka J. Matsuoka ◽  
Eisuke Ochi
Keyword(s):  
Breast Cancer ◽  
Cancer Survivors ◽  
High Intensity ◽  
Breast Cancer Survivors ◽  
Interval Training ◽  
High Intensity Interval Training ◽  
Community Based ◽  
Eligibility Criteria ◽  
Home Based ◽  
High Intensity Interval

Abstract BackgroundTo review the methods and outcomes of high-intensity interval training (HIIT) interventions for breast cancer survivors, and to explore the feasibility of prescribing exercise for breast cancer survivors.MethodsA systematic search of electronic databases was conducted for studies published up to May 31, 2020. Eligibility criteria included randomized controlled trials of HIIT intervention in breast cancer survivors. Studies were grouped by whether the intervention was conducted during or after breast cancer treatment, and intervention methods and outcomes were reviewed within each group.Results Twenty-six studies were identified, and 13 satisfied the inclusion criteria. Intervention was conducted during treatment in 8 studies, and after treatment in 5. Intervention duration ranged from 3 to 16 weeks, with 2 or 3 sessions per week, for a total of 9 to 36 sessions. All interventions were supervised; 12 were lab-based, and 1 was community-based. One of most promising outcomes was improvement of cardiorespiratory fitness by HIIT.ConclusionThis review found that most studies on HIIT for breast cancer survivors investigated lab-based, supervised interventions. HIIT is a time-efficient method for increasing cardiovascular function in breast cancer survivors, but further research is necessary to determine its effects on other outcomes.

scholarly journals High-intensity interval training in breast cancer survivors: a systematic review

BMC Cancer ◽  
2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Katsunori Tsuji ◽  
Yutaka J. Matsuoka ◽  
Eisuke Ochi
Keyword(s):  
Breast Cancer ◽  
Cancer Survivors ◽  
High Intensity ◽  
Breast Cancer Survivors ◽  
Interval Training ◽  
High Intensity Interval Training ◽  
Community Based ◽  
Eligibility Criteria ◽  
Home Based ◽  
High Intensity Interval

Abstract Background To review the settings and outcomes of high-intensity interval training (HIIT) interventions for breast cancer survivors, and to explore the feasibility of prescribing exercise for breast cancer survivors. Methods A systematic search of electronic databases was conducted for studies published up to May 31, 2020. Eligibility criteria included randomized controlled trials of HIIT intervention in breast cancer survivors. Studies were grouped by whether the intervention was conducted during or after breast cancer treatment, and intervention methods and outcomes were reviewed within each group. Results Twenty-six studies were identified, and 13 satisfied the inclusion criteria. Intervention was conducted during treatment in 8 studies, and after treatment in 5. Intervention duration ranged from 3 to 16 weeks, with 2 or 3 sessions per week, for a total of 9 to 36 sessions. All interventions were supervised; 12 were lab-based, and 1 was community-based. One of most promising outcomes was improvement of cardiorespiratory fitness by HIIT. Conclusion This review found that all studies on HIIT for breast cancer survivors investigated lab-based, supervised interventions, but not home-based or unsupervised. HIIT is a time-efficient method for increasing cardiovascular function in breast cancer survivors, but further research is necessary to determine its effects on other outcomes.

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