Effects of Sports, Exercise Training, and Physical Activity in Children with Congenital Heart Disease-A Review of the Published Evidence

Children and adolescents with congenital heart disease (CHD) should be encouraged to adopt a physically active lifestyle, ideally by participating in sports activities at school and sports clubs. Children with complex CHD or other risk factors (for example, pacemakers, cardioverter-defibrillators, channelopathies) may, however, need specific individualized training programs. This review article summarizes the current knowledge regarding the clinical effects of sports and exercise training on CHD and its pathophysiologic mechanisms. An evidence-based approach based on a literature search, using PubMed, Medline, CINHAL, Embase, and the Cochrane Library was conducted, last completed on 30 December 2021. In studies with 3256 CHD patients in total, including 10 randomized controlled trials, 14 prospective interventional trials, 9 observational trials, and 2 surveys, exercise training has been shown to improve exercise capacity and physical activity, motoric skills, muscular function, and quality of life. Sports and exercise training appears to be effective and safe in CHD patients. Despite being cost-efficient, training programs are currently scarcely reimbursed; therefore, support from healthcare institutions, commissioners of healthcare, and research-funding institutions is desirable. There is a strong need to establish specialized rehabilitation programs for complex CHD patients to enhance these patients' access to this treatment intervention. Further studies may be desirable to confirm these data to investigate the impact on risk profiles and to identify the most advantageous training methodology and underlying pathophysiological mechanisms.

The Effects of Physical Inactivity and Exercise at Home in Young Patients with Congenital Heart Disease during the COVID-19 Pandemic

Background: The COVID-19 pandemic had a significant impact on the population’s ability to be physically active. Purpose: Evaluate the effect of the COVID-19 mitigation measures on exercise tolerance in patients with congenital heart disease (CHD). Materials and methods: All subjects (880, 6–18 years old) who performed a stress test at our hospital from October 2020 to February 2021 and had a similar test one year earlier were enrolled. A questionnaire on the degree of physical activity carried out in 2020 concerning the period prior to the pandemic was compiled. Exercise tolerance and the main anthropometric parameters between the first and second tests were compared. Results: 110 subjects (11.9 ± 4.1 years) were included in the study. The percentage of patients engaged in regular physical activity (RPA) decreased significantly during the pandemic (p < 0.001), and BMI increased significantly (p < 0.001), except among the subjects who began RPA during the lockdown, whereas test duration did not decrease significantly overall but increased in this last subgroup (p < 0.05) Conclusions: The COVID-19 lockdown led to a less active lifestyle with a significant increase in BMI in our group of CHD. These data could have negative effects on the risk profile of this population. RPA practiced at home seems to be effective in counteracting such effects.

E-Health Exercise Intervention for Pediatric Patients with Congenital Heart Disease: A Randomized Controlled Trial

OBJECTIVE

To improve health-related physical fitness (HRPF) (primary outcome) and health-related quality of life (HRQoL) with a web-based motor intervention program in pediatric patients with congenital heart disease (CHD).

STUDY DESIGN

Overall, 70 patients (13.0 ± 2.6 years; 34% girls) aged 10-18 years with moderate or complex CHD severity were randomly allocated 1:1 to an intervention or control group. The intervention group trained 3 times per week for 20 minutes in a web-based exercise program over a period of 24 weeks. The control group followed lifestyle per usual. At baseline and follow-up HRPF was assessed via 5 tasks of the FITNESSGRAM and converted to a HRPF z score. HRQoL was assessed with KINDL self-report questionnaire.

RESULTS

In total, 61 patients completed the follow-up. There was no change in total HRPF z score (intervention group: 0.14 ± 0.38 vs control group: 0.09 ± 0.38, P = .560) and total HRQoL (intervention group: -1.73 ± 8.33 vs control group: 1.31 ± 7.85, P = .160) after the 24-week web-based exercise intervention. This was true for all subcategories of HRPF and HRQoL. There were no adverse events associated with the web-based exercise intervention.

CONCLUSIONS

We found that 24 weeks of web-based exercise intervention with an aimed volume of 60 minutes of exercise per week was safe but did not improve HRPF and HRQoL in children with moderate or complex CHD.

TRIAL REGISTRATION

Clinicaltrials.gov: NCT03488797.

Mismatch between self-estimated and objectively assessed exercise capacity in patients with congenital heart disease varies in regard to complexity of cardiac defects

AIM

Regular evaluation of physical capacity takes a crucial part in long-term follow-up in patients with congenital heart disease (CHD). This study aims to examine the accuracy of self-estimated exercise capacity compared to objective assessments by cardiopulmonary exercise testing in patients with CHD of various complexity.

METHODS

We conducted a single centre, cross-sectional study with retrospective analysis on 382 patients aged 8-68 years with various CHD who completed cardiopulmonary exercise tests. Peak oxygen uptake was measured. Additionally, questionnaires covering self-estimation of exercise capacity were completed. Peak oxygen uptake was compared to patient's self-estimated exercise capacity with focus on differences between complex and non-complex defects.

RESULTS

Peak oxygen uptake was 25.5 ± 7.9 ml/minute/kg, corresponding to 75.1 ± 18.8% of age- and sex-specific reference values. Higher values of peak oxygen uptake were seen in patients with higher subjective rating of exercise capacity. However, oxygen uptake in patients rating their exercise capacity as good (mean oxygen uptake 78.5 ± 1.6%) or very good (mean oxygen uptake 84.8 ± 4.8%) was on average still reduced compared to normal. In patients with non-complex cardiac defects, we saw a significant correlation between peak oxygen uptake and self-estimated exercise capacity (spearman-rho -0.30, p < 0.001), whereas in patients with complex cardiac defects, no correlation was found (spearman-rho -0.11, p < 0.255).

CONCLUSION

The mismatch between self-estimated and objectively assessed exercise capacity is most prominent in patients with complex CHD.Registration number at Charité Universitätsmedizin Berlin Ethics Committee: EA2/106/14.

Healthcare needs and Quality of Life in Youths with Congenital Heart Disease: Health-Promoting Behaviors as a Mediator

PURPOSE

The aims of this study were to examine the relationship between healthcare needs, health-promoting behaviors and quality of life (QoL) of youths with congenital heart disease (CHD), and to determine whether health-promoting behaviors were a mediating variable.

DESIGN AND METHODS

This cross-sectional descriptive study was conducted recruiting 205 youths aged 15 to 24 with either ventricular septal defect (VSD) or tetralogy of Fallot (TOF). A self-reported questionnaire was used to collect demographic information; furthermore, the thickness of the triceps skinfold was measured. The Healthcare Needs Scale for Youth with CHD, Adolescent Health Promotion-short form scale, and World Health Organization QoL-BREF scale were administered, and Pearson's correlation, multiple regressions, and the Sobel test were conducted.

RESULTS

The triceps skinfold of participants with VSD was significantly thicker than that of participants with TOF (p < 0.05). Healthcare needs, health-promoting behaviors, and QoL were positively correlated. The overall health-promoting behaviors served as a partial mediator between overall healthcare needs and QoL, accounting for 40.1% of the total variation.

CONCLUSIONS

The study illustrates that health-promoting behaviors have an impact on healthcare needs and QoL of youths with CHD. The development of tailored health consulting interventions to fulfill healthcare needs is required to improve physical and psychosocial wellness among youths with CHD.

PRACTICE IMPLICATIONS

Targeting individual and public health strategies for enhancing health-promoting behaviors should be integrated in CHD care planning.

Quality of life in young people with congenital heart disease is better than expected

OBJECTIVES

Improved treatments for patients with congenital heart disease (CHD) have led to a growing interest in long-term functional outcomes such as health-related quality of life (HRQoL). Studies on HRQoL in children with CHD have contradicting results. Therefore, we compared HRQoL of children with CHD with that of current healthy peers and stratify CHD cases by severity and diagnostic subgroups.

METHODS

We included 514 patients (191 girls) aged 7-17 (12.9±3.1) years who were recruited at our institution between July 2014 and May 2017. The self-reported and age-adapted KINDL questionnaire was used to assess HRQoL. Patient data were compared with that of a recent control group of 734 healthy children (346 girls, 13.4±2.1 years).

RESULTS

Patients with CHD scored at least as high as healthy peers in HRQoL (CHD: 78.6±9.8; healthy: 75.6±10.1; P<0.001). After correction for sex and age, patients with CHD presented a 2.3-point higher HRQoL (P<0.001). The sex-specific and age-specific analyses showed that there were no differences between boys with and without CHD in childhood (P=0.255), but in adolescence, boys with CHD had on average 3.9-point higher scores (P=0.001), whereas girls with CHD had statistically higher HRQoL perception than healthy girls in childhood (4.2 points; P=0.003) and adolescence (4.2 points; P=0.005). There were no differences between the severity classes or diagnostic subgroups in the total HRQoL score or in the six subdomains.

CONCLUSION

The high HRQoL in young patients with CHD suggests that they can cope well with their disease burden. This holds true for all severity classes and diagnostic subgroups.

Geographical variation and predictors of physical activity level in adults with congenital heart disease

Background

Physical activity is important to maintain and promote health. This is of particular interest in patients with congenital heart disease (CHD) where acquired heart disease should be prevented. The World Health Organization (WHO) recommends a minimum of 2.5 h/week of physical activity exceeding 3 metabolic equivalents (METS) to achieve positive health effects. It is unknown whether physical activity levels (PAL) in adult CHD patients differ by country of origin.

Methods

3896 adults with CHD recruited from 15 countries over 5 continents completed self-reported instruments, including the Health Behaviour Scale (HBS-CHD), within the APPROACH-IS project. For each patient, we calculated whether WHO recommendations were achieved or not. Associated factors were investigated using Generalized Linear Mixed Models.

Results

On average, 31% reached the WHO recommendations but with a great variation between geographical areas (India: 10%–Norway: 53%). Predictors for physical activity level in line with the WHO recommendations, with country of residence as random effect, were male sex (OR 1.78, 95%CI 1.52–2.08), NYHA-class I (OR 3.10, 95%CI 1.71–5.62) and less complex disease (OR 1.46, 95%CI 1.16–1.83). In contrast, older age (OR 0.97, 95%CI 0.96–0.98), lower educational level (OR 0.41, 95%CI 0.26–0.64) and being unemployed (OR 0.57, 95%CI 0.42–0.77) were negatively associated with reaching WHO recommendations.

Conclusions

A significant proportion of patients with CHD did not reach the WHO physical activity recommendations. There was a large variation in physical activity level by country of origin. Based on identified predictors, vulnerable patients may be identified and offered specific behavioral interventions.

PSYCHOMETRIC PROPERTIES OF FUNCTIONAL CAPACITY TESTS IN CHILDREN AND ADOLESCENTS: SYSTEMATIC REVIEW

OBJECTIVES

To identify studies that evaluated psychometric properties of functional capacity tests in children and adolescents, and to verify which of these have satisfactory properties of measurement.

DATA SOURCES

Searches on MEDical Literature Analysis and Retrieval System Online (MEDLINE), Cumulative Index to Nursing and Allied Health Literature (CINAHL) and Scientific Electronic Library Online (SciELO) databases without limiting period or language. Two investigators independently selected articles based on the following inclusion criteria: children and/or adolescent population (healthy or with cardiorespiratory diseases); and assessment of psychometric properties of functional capacity tests. Studies with (I) adult samples, (II) sample with neurological diseases, and (III) on reference values or prediction equations only were excluded.

DATA SYNTHESIS

From the total of 677 articles identified, 11 were selected. These evaluated the psychometric properties of the following tests: 6-minute walk test (6MWT) (n=7); 6MWT and the 3-minute step test (3MST) (n=1); and Incremental Shuttle Walk Test (ISWT) (n=3). Reproducibility and reliability were good for 6MWT and ISWT, and moderate for 3MST. The ISWT showed high validity measures for both healthy children and children with chronic respiratory disease. The validity of 6MWT varied across studies, and should be analyzed according to the health conditions of test takers. The validity of 3MST is unclear, and further studies in pediatric population are required.

CONCLUSIONS

Most studies investigated 6MWT measurement properties. Validity of 6MWT varied according to different pediatric populations. The use of 6MWT, ISWT and 3MST tests to measure clinically important changes in children and adolescents with cardiorespiratory diseases is still unclear.

Creating a lesion-specific "roadmap" for ambulatory care following surgery for complex congenital cardiac disease

Over the past 20 years, the successes of neonatal and infant surgery have resulted in dramatically changed demographics in ambulatory cardiology. These school-aged children and young adults have complex and, in some cases, previously unexpected cardiac and non-cardiac consequences of their surgical and/or transcatheter procedures. There is a growing need for additional cardiac and non-cardiac subspecialists, and coordination of care may be quite challenging. In contrast to hospital-based care, where inpatient care protocols are common, and perioperative expectations are more or less predictable for most children, ambulatory cardiologists have evolved strategies of care more or less independently, based on their education, training, experience, and individual styles, resulting in highly variable follow-up strategies. We have proposed a combination proactive-reactive collaborative model with a patient's primary cardiologist, primary-care provider, and subspecialists, along with the patient and their family. The goal is to help standardise data collection in the ambulatory setting, reduce patient and family anxiety, increase health literacy, measure and address the non-cardiac consequences of complex cardiac disease, and aid in the transition to self-care as an adult.