The effects of long-term aerobic exercise on cardiac structure, stroke volume of the left ventricle, and cardiac output

Lee, Bo-Ae; Oh, Deuk-Ja

doi:10.12965/jer.150261

Cited by 26 publications

(22 citation statements)

References 18 publications

(24 reference statements)

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“…Our results suggest positive adaptation to the intervention and the improvement of systemic oxygen delivery. Other studies have also reported significant improvements in an echocardiogram-generated stroke volume as a result of long-term (> 12 weeks) exercise training [28]. The capacity to increase physical activity depends on the ability of the heart to generate adequate cardiac output and the ability of skeletal muscles to utilise the oxygen delivered [29].…”

Section: Discussionmentioning

confidence: 99%

Acceptability, Feasibility and Preliminary Evaluation of a Novel, Personalised, Home-Based Physical Activity Intervention for Chronic Heart Failure (Active-at-Home-HF): a Pilot Study

et al. 2019

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Purpose: Less than 10% of heart failure patients in the UK participate in cardiac rehabilitation programmes. The present pilot study evaluated feasibility, acceptability and physiological effects of a novel, personalised, home-based physical activity intervention in chronic heart failure. Methods: Twenty patients (68 ± 7 years old, 20% females) with stable chronic heart failure due to reduced left ventricular ejection fraction (31 ± 8 %) participated in a single-group, pilot study assessing the feasibility and acceptability of a 12-week personalised home-based physical activity intervention aiming to increase daily number of steps by 2000 from baseline (Active-at-Home-HF). Patients completed cardiopulmonary exercise testing with non-invasive gas exchange and haemodynamic measurements and quality of life questionnaire pre-and postintervention. Patients were supported weekly via telephone and average weekly step count data collected using pedometers. Results: Forty-three patients were screened and 20 recruited into the study. Seventeen patients (85%) completed the intervention, and 15 (75%) achieved the target step count. Average step count per day increased significantly from baseline to 3 weeks by 2546 (5108 ± 3064 to 7654 ± 3849, P = 0.03, n = 17) and was maintained until week 12 (9022 ± 3942). Following completion of the intervention, no adverse events were recorded and quality of life improved by 4 points (26 ± 18 vs. 22 ± 19). Peak exercise stroke volume increased by 19% (127 ± 34 vs. 151 ± 34 m/beat, P = 0.05), while cardiac index increased by 12% (6.8 ± 1.5 vs. 7.6 ± 2.0 L/min/m 2 , P = 0.19). Workload and oxygen consumption at anaerobic threshold also increased by 16% (49 ± 16 vs. 59 ± 14 watts, P = 0.01) and 10% (11.5 ± 2.9 vs. 12.8 ± 2.2 ml/kg/min, P = 0.39). Conclusion: The Active-at-Home-HF intervention is feasible, acceptable and effective for increasing physical activity in CHF. It may lead to improvements in quality of life, exercise tolerance and haemodynamic function. Trial Registration: www.clinicaltrials.gov NCT0367727. Retrospectively registered on 17 September 2018.

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Section: Discussionmentioning

confidence: 99%

Acceptability, Feasibility and Preliminary Evaluation of a Novel, Personalised, Home-Based Physical Activity Intervention for Chronic Heart Failure (Active-at-Home-HF): a Pilot Study

et al. 2019

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“…15,16 Altered haemodynamics due to the high volume of circulating blood in obese people lead to larger stroke volumes and subsequent left ventricular dilatation. 17 Compensatory hypertrophy may develop as a result, thus impairing the diastolic or both systolic and diastolic ventricular functions. 18,19 Pascual et al revealed that the obese children had subclinical left ventricular diastolic dysfunction in all grades of obesity and disturbed systolic functions in the early stages of obesity, which were reversible with weight reduction.…”

Section: Discussionmentioning

confidence: 99%

How do diet and exercise programmes affect the cardiovascular risk profiles of obese children?

Karaağaç

Yıldırım

2019

Cardiol Young

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Obesity is a global health issue in both children and adults. Besides its comorbidities, cardiac structure and functions may be impaired from childhood if obesity is not controlled in the growing years. The effects of diet and exercise on the cardiovascular functions and biochemical parameters of obese children were evaluated in this study.In a tertiary hospital, 6–16-year-old of mean age 10.8±2.3 years, non-random voluntarily selected 34 obese children with body mass index above 95th percentile and no syndromic or systemic illnesses were enrolled in this prospective study. Weights, heights, and blood pressures were recorded. Cardiac functions were evaluated by M-mode and tissue Doppler echocardiography. Glucose, HbA1c, cholesterol, triglyceride, liver enzyme, and thyroid hormone levels were analysed. These measurements were repeated after a 6-month diet and exercise programme. The results were compared statistically.Echocardiography of the obese children after diet and exercise showed significantly increased ejection fraction, fractional shortening, mitral annular plane systolic excursion and mitral systolic velocity values, associated with the systolic ventricular functions, and decreased tissue Doppler mitral and tricuspid early diastolic velocities, related with the early diastolic ventricular functions, compared with before diet and exercise (p<0.05). Moreover, the body mass index, glucose, cholesterol, and triglyceride levels significantly decreased after diet and exercise (p<0.05).The systolic and early diastolic cardiac functions are impaired and the biochemical parameters are distorted starting from the childhood because of the obesity. Regular diet and exercise provide significant improvement. Cardiac evaluation should be routinely performed in all obese children and they should be encouraged for a regular diet and exercise for better cardiovascular health.

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“…SV increased in rest and workload but was significantly in workload. Aerobic exercise for a long time can affect the parasympathetic nerve, thus increasing SV and reducing the resting HR [3,5,35]. Increase in SV due to increases in ventricular end-diastolic volume and due to reductions in endsystolic volume [31].…”

Section: Discussionmentioning

confidence: 99%

Central hemodynamic response to interval aerobic jogging in healthy male students

Mahdiabadi

2017

PPS

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Purpose:Regular training improves maximal oxygen consumption (VO2max) and cardiovascular function. The aim of this study was to determine the central hemodynamic adaptation after interval aerobic jogging in healthy male students. Material:Twenty untrained male students (aged 18-20 years) were volunteered and randomly divided into two groups: interval (I; n=10) and control (C; n=10). Countryside interval jogging programme 5×9 min at 70% of Maximum Heart Rate interspersed with 4 min inactive recovery, 3 days/week for 8-weeks performed. The control group remained sedentary during the period. VO2max obtained using the step-test. Standard medical method of tetrapolar chest reography (impedance cardiography) was performed for hemodynamic parameters, during resting and after workload (Step-test) conditions, before and after the training. Results:Using t-test, after eight weeks the resting heart rate in both groups did not change significantly (P>0.05).The stroke volume increased significantly in I group after workload (P≤0.05). The cardiac output (CO) did not change significantly in both groups (P>0.05). The systolic blood pressure in I group decreased significantly at rest and after workload (P≤0.05). The diastolic blood pressure did not change significantly in both groups (P>0.05). The systemic vascular resistance in the both groups did not change significantly (P>0.05).The maximal aerobic capacity absolute and relative increased significantly in I group (P≤0.05). Significant difference between groups in stroke volume, cardiac output, VO2max absolute and relative (P≤0.05) was found. Conclusions:Eight weeks aerobic interval jogging can influence on central hemodynamic and VO2max in male students.

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The effects of long-term aerobic exercise on cardiac structure, stroke volume of the left ventricle, and cardiac output

Cited by 26 publications

References 18 publications

Acceptability, Feasibility and Preliminary Evaluation of a Novel, Personalised, Home-Based Physical Activity Intervention for Chronic Heart Failure (Active-at-Home-HF): a Pilot Study

Acceptability, Feasibility and Preliminary Evaluation of a Novel, Personalised, Home-Based Physical Activity Intervention for Chronic Heart Failure (Active-at-Home-HF): a Pilot Study

How do diet and exercise programmes affect the cardiovascular risk profiles of obese children?

Central hemodynamic response to interval aerobic jogging in healthy male students

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