Validity of the Ekblom-Bak Cycle Ergometer Test in Patients with Cardiovascular Disease

OBJECTIVE

To assess the validity of the Ekblom-Bak cycle ergometer test in patients with cardiovascular disease admitted to cardiac rehabilitation.

METHODS

Estimated peak oxygen consumption from the Ekblom-Bak test was compared with directly measured peak oxygen consumption from a treadmill cardiopulmonary exercise test. Patients completed the cardiopulmonary exercise test first, followed by the Ekblom-Bak test after 24 h rest. Pearson's correlation coefficient (r) was used to establish the correlation between estimated and measured peak oxygen consumption, and Bland-Altman plots with limits of agreement were used to determine the bias between the 2 tests.

RESULTS

Twenty-six patients were included in the final analysis. The Ekblom-Bak test significantly overestimated peak oxygen consumption. Agreement between estimated and measured peak oxygen consumption was: bias = 4.3 mL/kg/min (limits of agreement: -4.0-12.6 mL/kg/min).

CONCLUSION

The Ekblom-Bak test overestimated peak oxygen consumption to such an extent that it cannot accurately assess cardiorespiratory fitness in patients with cardiovascular disease. Thus, the cardiopulmonary exercise test remains the test of choice.

Kinesiophobia and associated variables in patients with heart failure

AIMS

Patients with heart failure (HF) can exhibit kinesiophobia, an excessive, debilitating, and irrational fear of movement. This study aimed to enhance the understanding of kinesiophobia in patients with HF by analysing associations with the following variables: musculoskeletal pain, quality of life, quality of sleep, functional capacity, disability, frailty, sex, and age.

METHODS AND RESULTS

In this cross-sectional study, 107 participants were included, with ages ranging from 28 to 97 years (57% men, mean age 73.18 ± 12.68 years). Multiple regression analyses were performed with all variables, including polynomial regressions for variables with a non-linear relationship. Kinesiophobia was significantly correlated (P < 0.01) with musculoskeletal pain, quality of life, quality of sleep, functional capacity, disability, and being at risk of frailty, while age and sex were not statistically significant. Frailty disability and musculoskeletal pain intensity were variables linearly associated with kinesiophobia, while quality of sleep and disability had a non-linear relationship with kinesiophobia.

CONCLUSION

Kinesiophobia needs to be evaluated and better understood in patients with HF to improve physical activity and exercise adherence. This study found that musculoskeletal pain intensity, quality of sleep, disability, and frailty risk have a significant association with kinesiophobia in patients with HF. Our results suggest multi-dimensional associations of kinesiophobia in patients with HF, which require further examination and understanding.

Mediation analysis of activities of daily living and kinesiophobia in association between cardiac function and health status of patients with chronic heart failure

AIMS

To explore the mediational effect of activities of daily living (ADL) and kinesiophobia on the cardiac function and health status of patients with chronic heart failure (CHF).

METHODS

From October 2021 to January 2022, a total of 244 CHF patients treated in the Department of Cardiology of general hospitals were recruited by the convenience sampling method. They were investigated with the Tampa Scale for Kinesiophobia Heart (TSK-SV Heart), the Barthel index for assessing ADL, and the EuroQol five-dimensional questionnaire (EQ-5D) for assessing the health status.

RESULTS

The cardiac function and kinesiophobia of CHF patients were both negatively correlated with their health status (r = -.390 and -0.410, respectively, both p < .01). Besides, the ADL of CHF patients was positively correlated with the health status (r = .320, p < .01). The cardiac function of CHF patients was negatively correlated with the ADL (r = -.412, p < .01), but positively correlated with kinesiophobia (r = .180, p < .01). The mediation proportion of ADL plus kinesiophobia between the cardiac function and health status of CHF patients was 43.48%. Both ADL and kinesiophobia partially mediated the effect of cardiac function on health status in CHF patients, but their mediational effects showed no significant difference (p = .777).

CONCLUSION

Both ADL and kinesiophobia exert obvious mediational effects between cardiac function and health status in CHF patients. Individualized cardiac rehabilitation (CR) programs based on the cardiac function, ADL and kinesiophobia of CHF patients may contribute to reduce the medical burden and improve the well-being of affected people.

Correlates of musculoskeletal pain and kinesiophobia in older adults with heart failure: A structural equation model

The study aimed to study the influence of musculoskeletal pain on kinesiophobia in patients with heart failure. This cross-sectional study recruited 107 heart failure patients aged 73.18±12.68 years (57% men) from an outpatient setting. Participants self-reported pain using the Musculoskeletal System Assessment Inventory and the Cornell Musculoskeletal Discomfort Questionnaire. Kinesiophobia was assessed with the Tampa Scale for Kinesiophobia-11. About 62% reported musculoskeletal pain, with knees (16.8%) and lower back (12.%) being the most painful locations. About 31% reported moderate levels and 24% indicated high levels of kinesiophobia. There were positive and significant associations between the indicators of pain and kinesiophobia. Results showed an adequate structural equation model fit to the data with musculoskeletal pain factors explaining 22.09% of the variance in kinesiophobia. Assessment of kinesiophobia in patients with heart failure with musculoskeletal pain is essential to improve self-care and overall quality of life.

Historical loss: Implications for physical activity levels in American Indian adults

PURPOSE

To investigate the relationship between daily thoughts about historical loss and daily levels of moderate to vigorous physical activity (MVPA) in American Indian (AI) adults residing on the Blackfeet reservation in Browning, Montana.

METHODS

The study was designed and conducted using a community-based participatory research framework and ecological momentary assessment. Over a period of 1 week, 100 AI adults (mean age = 42.18, SD = 14.92) reported how often they thought about historical loss at the end of each day. During this week-long period, all participants wore a wrist-accelerometer to passively and objectively measure levels of physical activity.

FINDINGS

We found that Blackfeet AI adults who reported thinking about historical loss more frequently over the course of the week had lower average levels of MVPA over the course of the week compared to Blackfeet AI adults who reported thinking about historical loss less frequently (B = -10.22, 95% CI = -13.83, -6.60). We also found that on days when Blackfeet AI adults thought more about historical loss compared to their weekly average, they had fewer minutes of MVPA compared to their weekly average of minutes of MVPA (B = -0.87, 95% CI = -1.48, -0.27).

CONCLUSIONS

Our data indicate that thoughts about historical loss are linked to lower levels of MVPA. Given high incidence of chronic health conditions linked to physical inactivity in AIs, more work is needed to identify the mechanisms through which thoughts about historical loss may inhibit physical activity in this population.

A Web-Based Mind-Body Intervention (Mindful Steps) for Promoting Walking in Chronic Cardiopulmonary Disease: Insights From a Qualitative Study

Background

Given the deleterious effects of physical inactivity in persons with chronic obstructive pulmonary disease (COPD) and/or heart failure (HF), interventions that promote long-term daily physical activity are needed. Mindful Steps, designed to promote walking behaviors in COPD and HF, is a multicomponent intervention that integrates mind-body content with other self-regulatory components. The aim of the current qualitative study was to characterize participants' experiences with Mindful Steps and understand the perceived influence of the intervention on walking and health.

Method

In the context of a pilot randomized controlled feasibility trial comparing the year-long Mindful Steps program to usual care among individuals with COPD and HF, semi-structured qualitative interviews were administered at 6- and 12-months. Interviews were audio recorded and transcribed. The constant comparative method was used to code transcripts, identify categories, and develop interrelated themes.

Results

Nineteen participants (63% female; Mage = 70.2 years, SD = 6.95) who were randomized to the intervention group completed the 6-month interview and 17 completed the 12-month interview. The pedometer with feedback, live group classes, and mind-body videos were described as the most helpful intervention components. Participants learned several strategies that helped their walking (e.g., breathing regulation and awareness, body awareness, mind-body techniques, pacing), described walking as enjoyable, and identified internal reasons for walking (e.g., to feel good). They also reported several physical and mental health benefits of the intervention. Some participants reported limited influence of the intervention on walking or health. Many participants continued to use the strategies they learned in the first half of the intervention at 12-months.

Conclusions

The mind-body content of Mindful Steps appeared to positively influence walking behaviors. Participants' experiences with the intervention helped to identify areas for future intervention refinement. Future quantitative work is needed to corroborate these qualitative findings and assess the efficacy of the intervention on long-term physical activity engagement.

Trial Registration

This trial is registered in Clinical Trials.gov, ID number NCT01551953.

Fear of movement and its associated psychosocial factors in heart failure patients: A cross-sectional study

AIMS

Fear of movement is a significant obstacle to daily activities, which may lead to adverse outcomes in patients with heart failure. This study aimed to examine the prevalence of fear of movement and to identify psychosocial factors associated with fear of movement in heart failure patients.

METHODS AND RESULTS

In this cross-sectional study, a total of 305 heart failure patients were recruited from three cardiovascular units of a university hospital. Self-reported questionnaires were used to measure fear of movement, cardiac anxiety, depressive symptoms, subjective social status, education, monthly income, and employment status. The results showed that 178 (58.4%) patients were accompanied with fear of movement. Hierarchical linear regression analysis showed that scores for cardiac anxiety (β=0.254, p < 0.001) and depressive symptoms (β=0.308, p < 0.001), as well as being employed (β=0.186, p < 0.001) were positively associated with fear of movement score, while the score for subjective social status (β=-0.101, p = 0.038) was negatively associated with fear of movement score. The four independent variables accounted for 30.3% of the variance in fear of movement.

CONCLUSIONS

Fear of movement is common in patients with heart failure. Cardiac anxiety, depressive symptoms, subjective social status, and employment status were associated with patients' fear of movement. This indicates that measures should be taken to screen and manage patients' fear of movement. Furthermore, alleviating cardiac anxiety and depressive symptoms may be important to consider in relieving fear of movement in heart failure patients, especially for those who are employed and with low subjective social status.

Factors influencing kinesiophobia during the "blanking period" after radiofrequency catheter ablation in patients with atrial fibrillation by the fear-avoidance model

BACKGROUND

The influencing factors of kinesiophobia (fear of movement) in patients with atrial fibrillation(AF)during the post-operative "Blanking Period" are not known. The aims were to investigate the status of kinesiophobia in patients with AF during the post-operative "Blanking Period", then further describe the occurrence and analyze the influencing factors of patients' kinesiophobia by the Fear-Avoidance Model.

MATERIALS AND METHODS

In total,400 patients diagnosed with atrial fibrillation, during the post-operative "Blanking Period" from the selected hospital were included in this study. The Tampa Scale for Kinesiophobia Heart (TSK-SV Heart), the Self-efficacy for Exercise (SEE) scale, and the Geriatric Locomotive Function Scale (GLFS) were used to assess kinesiophobia, exercise self-efficacy, and physical function. The study adopted a cross-sectional design.

RESULTS

The score of kinesiophobia during the "Blanking Period" after operation in patients with atrial fibrillation was (44.06 ± 10.77), and the rate of high kinesiophobia was 71.61%.Logistic regression results showed that age, education, household monthly income, resting heart rate, EHRA symptom classification, exercise self-efficacy, and physical function influenced the kinesiophobia of patients during the post-operative "Blanking Period"(p<0.05， p<0.01).

CONCLUSIONS

Kinesiophobia is common in patients with atrial fibrillation during the postoperative "Blanking Period", and the fear of movement is related to age, education, household monthly income, resting heart rate, EHRA symptom classification, exercise self-efficacy, and physical function. Clinical and nursing staff should pay close attention to the psychological problems in the post-operation "Blanking Period" of exercise rehabilitation in patients with atrial fibrillation, make timely interventions to reduce patients' fear of movement, and improve patients' compliance with exercise rehabilitation.

Psychosocial Risk and Health Behaviors as Predictors of Clinical Events in Patients Wait-Listed for a New Heart: Results from 7 Years of Follow-Up

We examined the long-term relationship of psychosocial risk and health behaviors on clinical events in patients awaiting heart transplantation (HTx). Psychosocial characteristics (e.g., depression), health behaviors (e.g., dietary habits, smoking), medical factors (e.g., creatinine), and demographics (e.g., age, sex) were collected at the time of listing in 318 patients (82% male, mean age = 53 years) enrolled in the Waiting for a New Heart Study. Clinical events were death/delisting due to deterioration, high-urgency status transplantation (HU-HTx), elective transplantation, and delisting due to clinical improvement. Within 7 years of follow-up, 92 patients died or were delisted due to deterioration, 121 received HU-HTx, 43 received elective transplantation, and 39 were delisted due to improvement. Adjusting for demographic and medical characteristics, the results indicated that frequent consumption of healthy foods (i.e., foods high in unsaturated fats) and being physically active increased the likelihood of delisting due improvement, while smoking and depressive symptoms were related to death/delisting due to clinical deterioration while awaiting HTx. In conclusion, psychosocial and behavioral characteristics are clearly associated with clinical outcomes in this population. Interventions that target psychosocial risk, smoking, dietary habits, and physical activity may be beneficial for patients with advanced heart failure waiting for a cardiac transplant.

Designing a Randomized Trial with an Age Simulation Suit-Representing People with Health Impairments

Due to demographic change, there is an increasing demand for professional care services, whereby this demand cannot be met by available caregivers. To enable adequate care by relieving informal and formal care, the independence of people with chronic diseases has to be preserved for as long as possible. Assistance approaches can be used that support promoting physical activity, which is a main predictor of independence. One challenge is to design and test such approaches without affecting the people in focus. In this paper, we propose a design for a randomized trial to enable the use of an age simulation suit to generate reference data of people with health impairments with young and healthy participants. Therefore, we focus on situations of increased physical activity.

Modulation of startle and heart rate responses by fear of physical activity in patients with heart failure and in healthy adults

Fear of physical activity (FoPA) has been suggested as a barrier to physical activity in patients with heart failure and might be associated with low adherence to exercise regimen despite medical guideline recommendations. The present study examined physiological indicators of FoPA by assessing startle modulation (via EMG at the orbicularis oculi muscle) and heart rate responses (derived from ECG) after affective priming with lexical stimuli of positive, neutral, and negative valence, as well as words related to physical activity as potentially phobic cues. After screening for FoPA in patients with heart failure and healthy adults, twenty participants each were assigned to one of three subsamples: a healthy control group and two cardiac patient groups scoring either low or high on FoPA. The high-FoPA group showed startle potentiation and more pronounced heart rate acceleration (than did controls) in the phobic prime condition, indicating defensive response mobilization. Among the patients, higher FoPA accounted for 30% of the startle potentiation by phobic priming, whereas general anxiety, depression, and disease severity were no significant predictors of startle modulation. These findings suggest that FoPA in patients with heart failure is associated with defensive responses on a physiological level that might be indicative of avoidance behavior, thereby contributing to low adherence to exercise regimen. Thus, FoPA presents a significant target for psychological interventions to foster physical activity in cardiac patients.