Physical Function and Physical Activity Assessment and Promotion in the Hemodialysis Clinic: A Qualitative Study

A Current State of the Art and Science of Exercise in Dialysis: A Narrative Review

Purpose of the review

The purpose of the review is to discuss current proven benefits and problems of integrating exercise in the care of people receiving dialysis by reviewing literature from the last few years and identifying important questions that still need to be asked and answered.

Methods

A focused review and appraisal of the literature were done. Original peer-reviewed articles, review articles, opinion pieces and guidelines were identified from PubMed and Google Scholar databases. Only sources in English were accessed. Search terms "exercise" and "dialysis" were used to find active recruiting randomized trials in various clinical trial registry platforms.

Key findings

Numerous studies have demonstrated the benefits of exercise training in individuals receiving dialysis, limited by factors such as short duration of follow-up and inconsistent adverse event reporting and outcomes selected. Notable gaps in exercise research in dialysis include ways to maintain programs and patient motivation, studies in peritoneal dialysis and home hemodialysis patients, and how best to define and measure outcomes of interest.

Implications

This review summarizes the current state of exercise in people receiving dialysis and serves as a call to action to conduct large, randomized controlled trials to improve the quality of evidence needed to implement and sustain innovative, exercise interventions, and programs for this population.

Mobility in Older Adults Receiving Maintenance Hemodialysis: A Qualitative Study

RATIONALE & OBJECTIVE

For older adults, maintaining mobility is a major priority, especially for those with advanced chronic diseases like kidney failure. However, our understanding of the factors affecting mobility in older adults receiving maintenance hemodialysis is limited.

STUDY DESIGN

Descriptive qualitative study.

SETTING & PARTICIPANTS

Using purposive sampling, we recruited (1) persons aged≥60 years receiving maintenance hemodialysis; and (2) care partners (≥18 years) providing regular support to an older adult receiving hemodialysis. During a single in-person home visit, we assessed mobility using the Short Physical Performance Battery (SPPB) and conducted individual one-on-one interviews regarding important personal factors related to mobility.

ANALYTICAL APPROACH

Descriptive statistics were used for demographic and SPPB data. Transcripts underwent thematic coding, informed by the International Classification of Function framework of mobility. We used conceptual content analysis to inductively extract themes and subthemes.

RESULTS

We enrolled 31 older adults receiving hemodialysis (42% female, 68% Black) with a mean age of 73±8 years and mean dialysis vintage of 4.6±3.5 years; their mean SPPB score was 3.6±2.8 points. Among 12 care partners (75% female, 33% Black), the mean age was 54±16 years and mean SPPB score was 10.1±2.4 points. Major themes extracted were (1) mobility represents independence; (2) mobility is precarious; (3) limitations in mobility cause distress; (4) sources of encouragement and motivation are critical; and (5) adaptability is key.

LIMITATIONS

Modest sample from single geographic area.

CONCLUSIONS

For older adults receiving hemodialysis, mobility is severely limited and is often precarious in nature, causing distress. Older adults receiving hemodialysis and their care partners have identified sources of encouragement and motivation for mobility, and cite an adaptable mindset as important. Future studies should conceptualize mobility as a variable condition and build on this outlook of adaptability in the development of interventions.

Correlation between Physical Activity and Psychological Distress in Patients Receiving Hemodialysis with Comorbidities: A Cross-Sectional Study

Comorbidities cause psychological distress to patients on hemodialysis and cause their physical function to deteriorate. This study aims to examine whether physical patterns are associated with anxiety, depression and fatigue among patients with and without comorbidities who are on hemodialysis. To this end, a cross-sectional survey was administered to 120 patients on hemodialysis. Data were collected using the International Physical Activity Questionnaire—Short Form, Beck Depression Inventory—Second Edition, Beck Anxiety Inventory, and Brief Fatigue Inventory—Taiwan Version. An independent sample t test and generalized linear model analyses were conducted. The results revealed that patients with comorbidities exhibited more severe levels of depression (p < 0.001), anxiety (p < 0.001), and fatigue (p = 0.010) than patients without comorbidities. Additionally, patients on hemodialysis with a high physical activity level (≥600 metabolic equivalent of task per min/week) exhibited less depression (B = −4.03; p < 0.001; 95% confidence interval [CI] = −6.04, −2.03) and anxiety (B = −2.64; p = 0.002; 95% CI = −4.27, −1.00) severity than those with a low physical activity level; those who engaged in weekly physical activities exhibited less fatigue severity (B = −1.17; p = 0.001; 95% CI = −1.84, −0.49) and fatigue interference (B = −0.61; p = 0.015; 95% CI = −1.10, −0.12). For patients on hemodialysis, having comorbidities was correlated with more severe levels of depression, anxiety, and fatigue. Weekly moderate-intensity physical activities were revealed to be correlated with less severity levels of depression, anxiety, and fatigue. The study findings aid the development of interventions for promoting physical activity among patients on hemodialysis to prevent the exacerbation of complications caused by comorbidities and psychological distress.

Physical Exercise in People with Chronic Kidney Disease-Practices and Perception of the Knowledge of Health Professionals and Physical Activity and Sport Science Professionals about Their Prescription

There is evidence on the need to include physical exercise as a treatment for diseases. A large number of professionals are involved in this, but it is not known how physical exercise is prescribed and which professionals are involved. This research has two objectives: (a) to find out the current practices in Spain regarding the prescription of physical exercise in patients with Chronic Kidney Disease (CKD) and (b) to analyse the perception that different health and physical activity professionals have of their knowledge to prescribe of physical exercise in the treatment of CKD. This is an empirical research with an ex post facto retrospective analysis of the information in a descriptive and correlational way. A total of 692 health and sports professionals participated. A questionnaire validated by a committee of experts was administered. Descriptive analyses were carried out and the differences in the study variables were analysed using Chi-square tests and one-factor Analysis of Variance. From the results obtained, we conclude there is a need to develop specific training programmes in the field of physical exercise for health professionals, as well as the establishment of multiprofessional teams for the prescription of physical exercise in CKD treatment, including physical exercise professionals (Cafyde).

Applying A Biopsychosocial Framework to Achieve Durable Behavior Change in Kidney Disease

Chronic disease self-management is the establishment and maintenance of behaviors needed to be an active participant in one's health care and experience the best health outcomes. Kidney disease self-management behaviors to slow disease progression include engaging in exercise or physical activity; adhering to a diet low in sodium, potassium, and phosphorus; monitoring laboratory parameters; managing complex medication regimens; coping with disease-related emotional distress; and communicating effectively with providers. Durable behavior change has been difficult to achieve in kidney disease, in part because of an incomplete understanding of the multilevel factors determining chronic disease self-management in this patient group. The biopsychosocial model of chronic illness care posits that an individual's health outcomes result from biological, psychological, social, and environmental factors as part of a multilevel systems hierarchy. Although this theoretical model has been used to comprehensively identify factors driving self-management in other chronic conditions, it has been applied infrequently to behavioral interventions in kidney disease. In this scoping review, we apply the biopsychosocial model of health to identify individual, interpersonal, and systems-level drivers of kidney disease self-management behaviors. We further highlight factors that may serve as novel, impactful targets of theory-based behavioral interventions to understand and sustain behavior change in kidney disease.

Perceptions of physical activity and technology enabled exercise interventions among people with advanced chronic kidney disease: a qualitative study

BACKGROUND

Exercise improves health outcomes and quality of life in persons with chronic kidney disease (CKD). The numbers of persons with advanced CKD meeting physical activity guidelines however is low. We undertook a qualitative study of men and women aged 36-74 from various race/ethnic populations with advanced CKD not requiring dialysis to describe their experiences and opinions around prior physical activity, motivating factors for and barriers to exercise, and perceptions of exercise-promoting technology and group-based programming designed to improve physical activity levels.

METHODS

Nineteen persons with advanced CKD not requiring dialysis were interviewed at two high volume nephrology clinics enriched with racial/ethnic minority patients (Emory University and Santa Clara Valley Medical Center). We used thematic analysis to identify dominant themes (n = 4) and subthemes (n = 19) around exercise experience, barriers, motivators, views, and preferences.

RESULTS

Four dominant themes and 19 subthemes were identified. The most common motivators to exercise included physical and mental health benefits, appearance, improvement in energy levels, and potential social interaction in group-based programs. Common barriers included health concerns, particularly complications related to other co-morbidities, as well as time and transportation constraints. Participants were skeptical of exercise programs solely reliant on technology.

CONCLUSIONS

The use of group-based exercise programs may motivate persons with CKD to increase exercise levels, while programs entirely based on technology may be less effective.

Effects of Intradialytic Exercise on Dialytic Parameters, Health-Related Quality of Life, and Depression Status in Hemodialysis Patients: A Randomized Controlled Trial

Exercise is fundamentally important in managing chronic diseases and improving health-related quality of life (HRQL). However, whether intradialytic exercise is safe through assessment of changes in dialytic parameters and has a positive impact on HRQL and depression status of hemodialysis patients requires further research with diverse racial and cultural populations to identify. This study aimed to evaluate the effects of intradialytic exercise on dialytic parameters, HRQL, and depression status in hemodialysis patients. A randomized controlled trial was conducted at a medical center in Northern Taiwan. Sixty-four hemodialysis patients were recruited using stratified random sampling. Participants were randomized into an experimental group (EG, n = 32) or a control group (CG, n = 32). The EG received a 12-week intradialytic exercise program while the CG maintained their usual lifestyles. Dialytic parameters, HRQL, and depression status were collected at baseline and at 12 weeks. The results indicated no differences in the dialytic parameters from the baseline between both groups. However, the EG had increased HRQL (ß = 22.6, p < 0.001) and reduced depression status (ß = −7.5, p = 0.02) at 12 weeks compared to the CG. Therefore, a 12-week intradialytic exercise regime is safe and effective in improving HRQL and reducing depression status for hemodialysis patients.

Addressing feasibility challenges to delivering intradialytic exercise interventions: A theory-informed qualitative study

BACKGROUND

Intradialytic exercise (IDE) may improve physical function and health-related quality of life. However, incorporating IDE into standard hemodialysis care has been slow due to feasibility challenges. We conducted a multicenter qualitative feasibility study to identify potential barriers and enablers to IDE and generate potential solutions to these factors.

METHODS

We conducted 43 semi-structured interviews with healthcare providers and patients across twelve hospitals in Ontario, Canada. We used the Theoretical Domains Framework and directed content analysis to analyze the data.

RESULTS

We identified eight relevant domains (knowledge, skills, beliefs about consequences, beliefs about capabilities, environmental context and resources, goals, social/professional role and identity, and social influences) represented by three overarching categories: 1) Knowledge, skills and expectations: lack of staff expertise to oversee exercise, uncertainty regarding exercise risks, benefits, and patient interest, lack of knowledge regarding exercise eligibility; 2) Human, material and logistical resources: staff concerns regarding workload, perception that exercise professionals should supervise IDE; space, equipment, and scheduling conflict concerns; 3) Social dynamics of the unit: local champions and patient stories contribute to IDE sustainability.We developed a list of actionable solutions by mapping barriers and enablers to behavior change techniques. We also developed a feasibility checklist of 47 questions identifying key factors to address prior to IDE launch.

CONCLUSIONS

Evidence-based solutions to identified barriers and enablers to IDE and a feasibility checklist may help recruit and support units, staff, and patients and address key challenges to the delivery of IDE in diverse clinical and research settings.

Barriers and facilitators to exercise in haemodialysis patients: A systematic review of qualitative studies

AIMS

The purpose of this systematic review is to synthesize the results of qualitative research and to identify the barriers and facilitators to exercise in haemodialysis patients from the perspectives of haemodialysis patients, caregivers and dialysis staff members.

DESIGN

Systematic review of qualitative studies.

DATA SOURCES

Qualitative studies were extracted from MEDLINE, EMBASE, Web of Science, CINAHL, PsycINFO, PubMed, CBM, CNKI and WanFang Database from inception of each database until July 2020. Qualitative research and mixed method research including barriers and/or facilitators to exercise in haemodialysis patients were included.

REVIEW METHODS

The systematic search method SPIDER (sample, phenomenon of interest, design, evaluation, research type) was used. Thematic synthesis of qualitative data was used.

RESULTS

284 studies were screened and 10 studies published between 2007 and 2020 were finally included in this review. The review included 180 patients, 70 dialysis staff members and seven caregivers. Five analytical themes were identified: disease distress, perception of exercise, environmental restrictions, spirit strength and hospital management. Barriers include disease distress, perception of exercise (security issue), environmental restrictions and hospital management. Facilitators include perception of exercise (exercise being considered beneficial, preference for exercise) and spirit strength (from religious beliefs). It is the spiritual strength (from family and friends, from dialysis staff members) that is both the barrier and the facilitator.

CONCLUSION

There are many barriers in popularizing exercise among haemodialysis patients. Future intervention measures and health policies should strengthen the facilitators and reduce the barriers, so as to promote the clinical practice of exercise for haemodialysis patients.

IMPACT

This review summarizes the barriers and facilitators to exercise in haemodialysis patients. The results of this study have an impact on research, practice and health policy setting. The exercise level of haemodialysis patients can be improved by using the facilitators and solving the barriers.

The Association Between Estimated Glomerular Filtration Rate and Hospitalization for Fatigue: A Population-Based Cohort Study

Background:

Fatigue is a pervasive symptom among patients with chronic kidney disease (CKD) that is associated with several adverse outcomes, but the incidence of hospitalization for fatigue is unknown.

Objective:

To explore the association between estimated glomerular filtration rate (eGFR) and incidence of hospitalization for fatigue.

Design:

Population-based retrospective cohort study using a provincial administrative dataset.

Setting:

Alberta, Canada.

Patients:

People above age 18 who had at least 1 outpatient serum creatinine measurement taken in Alberta between January 1, 2009, and December 31, 2016.

Measurements:

The first outpatient serum creatinine was used to estimate GFR. Hospitalization for fatigue was identified using International Classification of Diseases, Tenth Revision (ICD-10) code R53.x.

Methods:

Patients were stratified by CKD category based on their index eGFR. We used negative binomial regression to determine if there was an increased incidence of hospitalization for fatigue by declining kidney function (reference eGFR ≥ 60 mL/min/1.73m²). Estimates were stratified by age, and adjusted for age, sex, socioeconomic status, and comorbidity.

Results:

The study cohort consisted of 2 823 270 adults, with a mean age of 46.1 years and median follow-up duration of 6.0 years; 5 422 hospitalizations for fatigue occurred over 14 703 914 person-years of follow-up. Adjusted rates of hospitalization for fatigue increased with decreasing kidney function, across all age strata. The highest rates were seen in adults on dialysis (adjusted incident rate ratios 24.47, 6.66, and 3.13 for those aged 18 to 64, 65 to 74, and 75+, respectively, compared with eGFR ≥ 60 mL/min/1.73m²).

Limitations:

Fatigue hospitalization codes have not been validated; reference group limited to adults with at least 1 outpatient serum creatinine measurement; remaining potential for residual confounding.

Conclusions:

Declining kidney function was associated with increased incidence of hospitalization for fatigue. Further research into ways to address fatigue in the CKD population is warranted.

Trial Registration:

Not applicable (not a clinical trial).

Physical Function and Clinical Outcomes in Hemodialysis Patients: China Dialysis Outcomes and Practice Patterns Study

Background

Hemodialysis (HD) patients usually have impaired physical function compared with the general population. Self-reported physical function is a simple method to implement in daily dialysis care. This study aimed to examine the association of self-reported physical function with clinical outcomes of HD patients.

Methods

The Dialysis Outcomes and Practice Patterns Study (DOPPS) is a prospective cohort study. Data on 1,427 HD patients in China DOPPS5 were analyzed. Self-reported physical function was characterized by 2 items of "moderate activities limited level" and "climbing stairs limited level." Demographic data, comorbidities, hospitalization, and death records were collected from patients' records. Associations between physical function and outcomes were analyzed using COX regression models.

Results

Compared to "limited a lot" in moderate activities, "limited a little" and "not limited at all" groups were associated with lower all-cause mortality after adjusted for covariates (HR: 0.652, 95% CI: 0.435-0.977, and HR: 0.472, 95% CI: 0.241-0.927, respectively). And, not limited in moderate activities was associated with lower risk of hospitalization than the "limited a lot" group after adjusted for covariates (HR: 0.747, 95% CI: 0.570-0.978). Meanwhile, compared to "limited a lot" in climbing stairs, "limited a little" and "not limited at all" groups were associated with lower all-cause mortality (HR: 0.574, 95% CI: 0.380-0.865 and HR: 0.472, 95% CI: 0.293-0.762, respectively) but not hospitalization after fully adjusted.

Conclusion

Higher limited levels in self-reported physical function were associated with higher risk of all-cause mortality and hospitalization in HD patients.

Reasons for Nonparticipation in a Sustained Hemodialysis Intradialytic Exercise Program

OBJECTIVE(S)

Patients with end-stage kidney disease requiring hemodialysis suffer frailty and poor physical function. Exercise can improve physical function; however, barriers exist to intradialytic exercise programs. The objective of this study was to explore patients' reasons for not exercising in an extant intradialytic exercise program.

DESIGN AND METHODS

We conducted a retrospective analysis reporting the reasons for not exercising in an intradialytic exercise program in two hemodialysis centers over a 4-week period. We explored whether patient characteristics and the presence of an exercise professional were associated with missed exercise sessions.

RESULTS

Seventy-five patients participating in the intradialytic exercise program completed 57% of prescribed intradialytic exercise sessions. The three most frequently reported reasons from patients not exercising were refusal (24%), followed by fatigue (19%) and symptoms (14%). Patients were more than twice as likely to exercise if a kinesiologist was present (odds ratio [OR]: 2.26, confidence interval [CI]: 1.5, 3.4 P = .03). They were less likely to exercise if they were women (OR: 0.66, CI: 0.45, 0.95 P = .002), had been on dialysis greater than 60 months (OR: 0.55, CI: 0.37, 0.80 P < .002), or had more than two comorbid conditions (OR: 0.63, CI: 0.43, 0.90, P = .01).

CONCLUSION

Patient adherence to intradialytic exercise programs is strongly associated with the presence of exercise professionals.

Educational supportive group therapy and the quality of life of hemodialysis patients

Background

In addition to physical, mental, and social condition, ESRD and hemodialysis affect the quality of life of patients as well. Psychotherapy and non-pharmaceutical interventions are effective measures to add meaning to life, create a goal and motivation in life, and improve the quality of life in chronic patients. The effect of educational and supportive group therapy on the quality of life (QOL) of hemodialysis patients was examined.

Methods

The study was carried out as an interventional quasi-experimental study with the participation of 64 patients who were selected through convenience sampling and based on the patient’s hemodialysis days (Saturday, Monday, and Wednesday patients as an experimental group and Sunday, Tuesday, and Thursday patients as a control group). There were 32 patients in each group. The experimental group received eight 50 min sessions including two sessions per week. The control group received the normal interventions. The participants were assessed using a demographics form and Kidney Disease Quality of Life Short Form before, immediately after, and 1 month after the intervention. The collected data was analyzed using SPSS (v.24).

Results

The mean QOL scores of the experimental group before, immediately after, and 4 weeks after the intervention were 36.99, 43.3, and 44.9 respectively. Those of the control group were 36.39, 37.2, and 37.1 respectively. There was no significant difference between the two groups before the intervention (P > 0.05); however, the difference between the two groups was significant immediately after and 4 weeks after the intervention (P = 0.0001). The trend of score change in the experimental group was also significant (p < 0.05), and Tukey ad-hoc test showed significant differences between the scores before intervention and those immediately after and 4 weeks after the intervention (p < 0.05).

Conclusion

In general, educational and supportive group therapy can expand the interpersonal relationships of hemodialysis patients and positively affect their quality of life.

Perceptions of Physical Activity in African American Older Adults on Hemodialysis: Themes From Key Informant Interviews

OBJECTIVE

To determine key themes underlying the perceptions of older (≥65y) adults on hemodialysis regarding physical activity using qualitative methodology.

DESIGN

Semistructured key informant interviews.

SETTING

Academic medical center.

PARTICIPANTS

Convenience sample of older adults on hemodialysis (N=10).

INTERVENTIONS

None.

MAIN OUTCOME MEASURES

Interview transcripts were coded and analyzed using the framework method to extract themes and subthemes. Participants also answered Likert statements regarding their perceptions of physical activity, and the responses were tallied.

RESULTS

Ten older adults on hemodialysis participated (mean age 73±5y; 60% women); all were African American. All participants stated physical activity would make them feel better. The major themes that emerged were barriers and facilitators. Facilitators included internal motivators, family and friend support, and feasibility of incorporating physical activity into routine activities. Barriers were lack of motivation, health issues, and environmental restrictions.

CONCLUSIONS

Physical activity potentially could prevent the physical decline commonly seen in older adults on hemodialysis. Yet information regarding the perceptions of this population toward physical activity is sparse. Although the study is limited by selection bias, our study presents qualitative evidence that black older adults on hemodialysis desire physical activity for their health. Future interventions to increase physical activity in this population should consider leveraging existing facilitators, such as the support of family and friends, and use strategies to address barriers like minimal motivation.

The use of the PARIHS framework in implementation research and practice-a citation analysis of the literature

BACKGROUND

The Promoting Action on Research Implementation in Health Services (PARIHS) framework was developed two decades ago and conceptualizes successful implementation (SI) as a function (f) of the evidence (E) nature and type, context (C) quality, and the facilitation (F), [SI = f (E,C,F)]. Despite a growing number of citations of theoretical frameworks including PARIHS, details of how theoretical frameworks are used remains largely unknown. This review aimed to enhance the understanding of the breadth and depth of the use of the PARIHS framework.

METHODS

This citation analysis commenced from four core articles representing the key stages of the framework's development. The citation search was performed in Web of Science and Scopus. After exclusion, we undertook an initial assessment aimed to identify articles using PARIHS and not only referencing any of the core articles. To assess this, all articles were read in full. Further data extraction included capturing information about where (country/countries and setting/s) PARIHS had been used, as well as categorizing how the framework was applied. Also, strengths and weaknesses, as well as efforts to validate the framework, were explored in detail.

RESULTS

The citation search yielded 1613 articles. After applying exclusion criteria, 1475 articles were read in full, and the initial assessment yielded a total of 367 articles reported to have used the PARIHS framework. These articles were included for data extraction. The framework had been used in a variety of settings and in both high-, middle-, and low-income countries. With regard to types of use, 32% used PARIHS in planning and delivering an intervention, 50% in data analysis, 55% in the evaluation of study findings, and/or 37% in any other way. Further analysis showed that its actual application was frequently partial and generally not well elaborated.

CONCLUSIONS

In line with previous citation analysis of the use of theoretical frameworks in implementation science, we also found a rather superficial description of the use of PARIHS. Thus, we propose the development and adoption of reporting guidelines on how framework(s) are used in implementation studies, with the expectation that this will enhance the maturity of implementation science.

Exercise interventions for improving objective physical function in patients with end-stage kidney disease on dialysis: a systematic review and meta-analysis

Patients with end-stage kidney disease on dialysis have increased mortality and reduced physical activity, contributing to impaired physical function. Although exercise programs have demonstrated a positive effect on physiological outcomes such as cardiovascular function and strength, there is a reduced focus on physical function. The aim of this review was to determine whether exercise programs improve objective measures of physical function indicative of activities of daily living for patients with end-stage kidney disease on dialysis. A systematic search of Medline, Embase, the Cochrane Central Register of Controlled Trials, and Cumulative Index to Nursing and Allied Health Literature identified 27 randomized control trials. Only randomized control trials using an exercise intervention or significant muscular activation in the intervention, a usual care, nonexercising control group, and at least one objective measure of physical function were included. Participants were ≥18 yr of age, with end-stage kidney disease, undergoing hemo- or peritoneal dialysis. Systematic review of the literature and quality assessment of the included studies used the Cochrane Collaboration’s tool for assessing risk bias. A meta-analysis was completed for the 6-min walk test. Data from 27 studies with 1,156 participants showed that exercise, regardless of modality, generally increased 6-min walk test distance, sit-to-stand time or repetitions, and grip strength as well as step and stair climb times or repetitions, dynamic mobility, and short physical performance battery scores. From the evidence available, exercise, regardless of modality, improved objective measures of physical function for end-stage kidney disease patients undergoing dialysis. It is acknowledged that further well-designed randomized control trials are required.

Implementing a theory-based intradialytic exercise programme in practice: a quality improvement project

BACKGROUND

Research evidence outlines the benefits of intradialytic exercise (IDE), yet implementation into practice has been slow, ostensibly due to a lack of patient and staff engagement. The aim of this quality improvement project was to improve patient outcomes via the introduction of an IDE programme, evaluate patient uptake and sustainability and enhance the engagement of routine haemodialysis (HD) staff with the delivery of the IDE programme.

METHODS

We developed and refined an IDE programme, including interventions designed to increase patient and staff engagement that were based on the Theoretical Domains Framework (TDF), using a series of 'Plan, Do, Study, Act' (PDSA) cycles. The programme was introduced at two UK National Health Service HD units. Process measures included patient uptake, withdrawals, adherence and HD staff involvement. Outcome measures were patient-reported functional capacity, anxiety, depression and symptomology. All measures were collected over 12 months.

RESULTS

A total of 95 patients were enrolled in the IDE programme; 64 (75%) were still participating at 3 months, decreasing to 41 (48%) at 12 months. Adherence was high (78%) at 3 months, decreasing to 63% by 12 months. The provision of IDE by HD staff accounted for a mean of 2 (5%) sessions per 3-month time point. Patients displayed significant improvements in functional ability (P = 0.01) and a reduction in depression (P = 0.02) over 12 months, but the effects seen were limited to those who completed the programme.

CONCLUSIONS

A theory-based IDE programme is feasible and leads to improvement in functional capacity and depression. Sustaining IDE over time is complicated by high levels of patient withdrawal from the programme. Significant change at an organizational level is required to enhance sustainability by increasing HD staff engagement or access to professional exercise support.

Interaction of healthcare staff's attitude with barriers to physical activity in hemodialysis patients: A quantitative assessment

Background and aim of the study

In hemodialysis patients, sedentarism is a potentially modifiable mortality risk factor. We explored whether healthcare staff’s attitude towards exercise interacts with patient-perceived barriers in modifying the level of physical activity in this population.

Methods

In this prospective, cross-sectional, multicenter study we recruited 608 adult patients and 330 members of the healthcare staff in 16 hemodialysis units in Italy. We assessed patient-perceived barriers to, and healthcare staff’s attitude towards, exercise by specific questionnaires. We fitted multilevel linear models to analyze the relationships of either barriers or staff’s attitude, and their interaction, with a measure of patient self-reported physical activity (the Human Activity Profile–Adjusted Activity Score [HAP-AAS]), adjusting for multiple confounders. We also employed latent class analysis to dichotomize patients into those endorsing or not endorsing barriers.

Results

Most barriers were negatively associated with the HAP-AAS (adjusted change attributable to a given barrier ranging between -5.1 [“Feeling too old”, 95% Confidence Interval: -9.4 to -0.8] and -15.6 [“Ulcers on legs and feet”, 95%CI: -24.8 to -6.5]. We found a significant interaction between staff’s attitude and barriers (adjusted P values ranging between 0.03 [“I do not believe that it is physician’s or nurse’s role providing advice on exercise to patients on dialysis”] and 0.001 [“I do not often ask patients about exercise”]). A beneficial effect of a proactive staff’s attitude was evident only in patients not endorsing barriers.

Conclusions

Barriers and non-proactive staff’s attitude reduce physical activity in hemodialysis patients. Patients not endorsing barriers benefit the most from a proactive staff’s attitude.

Associations of physical activity energy expenditure with nutritional-inflammatory markers in hemodialysis patients

BACKGROUND

Sedentariness, high inflammation status and malnutrition are highly prevalent in end-stage kidney disease patients on maintenance hemodialysis (MHD). This study investigated associations of weekly physical activity energy expenditure (PAEE) with clinical and anthropometric markers of nutrition and inflammation.

METHODS

The analysis was performed using baseline cross-sectional data of 640 patients enrolled in the prospective cohort "The Prospective Study of the Prognosis of Patients Treated Chronically by Hemodialysis" (PROHEMO) developed in Salvador, BA, Brazil. The long version of the International Physical Activity Questionnaire was used to determine a summary measure of PAEE, the metabolic equivalent of task (MET), taking into account physical activities related to occupation, recreation, travel, sports, and housework. PAEE was the predictor variable. To assess associations of PAEE with outcomes, the sex-age-specific median MET was used. The malnutrition-inflammation score (MIS) with range of 0 to 30 (higher is worse), conicity index as indicator of abdominal adiposity and C-reactive protein (CRP) were the nutritional-inflammatory outcomes.

RESULTS

The mean age of the patients was 48.9 ± 13.8 y, 60.3% were males, 16.7% diabetic, 88.1% nonwhite. In multivariable logistic regression models with adjustments for sociodemographic variables and comorbidities, PAEE ≤median was associated with MIS ≥6 (odds ratio [OR] = 1.57; 95% confidence interval [CI] = 1.08, 2.29), conicity index ≥1.3 (OR = 1.52, 95% CI = 1.03, 2.23) and CRP >1.30 mg/dL (OR = 1.69, 95% CI = 1.08, 2.84).

CONCLUSIONS

Greater physical activity assessed by PAEE was associated with indicators of better nutritional and inflammation status. These results indicate opportunities for improving outcomes in MHD patients by counseling and treatment intervention.

Physical Function and Physical Activity in Peritoneal Dialysis Patients

BACKGROUND

Physical functioning (PF) and physical activity (PA) are low in patients treated with maintenance hemodialysis (MHD). Little information exists on this topic in patients treated with peritoneal dialysis (PD). The objective of this study was to compare PF and PA in patients with Stage-5 chronic kidney disease (CKD) treated with PD and in-center MHD.

METHODS

Physical functioning was measured in 45 prevalent PD patients using standard physical performance measures that include gait speed, chair stand, standing balance, 6-minute-walk, incremental shuttle walk and self-reported PF using the short form (SF)-36 questionnaire. Physical activity was determined from self-report and using the Community Healthy Activities Model Program for Seniors (CHAMPS) questionnaire. Scores for the short physical performance battery (SPPB) were calculated. In-center MHD patients were matched by age, gender, and diabetes status to the PD patients.

RESULTS

Unadjusted comparisons showed significantly higher 6-minute-walk distance, shuttle-walk distance and hand-grip in the PD patients. Adjustment in multiple regression analysis resulted in only gait speed being significantly different between the groups. All test results in both groups were lower than reference values for age and gender in the general population, and were at the levels indicating impairment. Physical activity was not different between the 2 groups (average age 49 yrs), and both groups had weekly caloric expenditure from all exercise and from moderate-intensity exercise that was similar to older (> 70 yrs) community-dwelling adults. Adjusted association indicated that PA was significantly associated with shuttle-walk distance.

CONCLUSIONS

Physical functioning and PA measures were low in both PD and MHD groups. Interventions to improve PA and PF should be strongly considered for both PD and MHD patients.

Exercise and CKD: Skeletal Muscle Dysfunction and Practical Application of Exercise to Prevent and Treat Physical Impairments in CKD

Patients with chronic kidney disease experience substantial loss of muscle mass, weakness, and poor physical performance. As kidney disease progresses, skeletal muscle dysfunction forms a common pathway for mobility limitation, loss of functional independence, and vulnerability to disease complications. Screening for those at high risk for mobility disability by self-reported and objective measures of function is an essential first step in developing an interdisciplinary approach to treatment that includes rehabilitative therapies and counseling on physical activity. Exercise has beneficial effects on systemic inflammation, muscle, and physical performance in chronic kidney disease. Kidney health providers need to identify patient and care delivery barriers to exercise in order to effectively counsel patients on physical activity. A thorough medical evaluation and assessment of baseline function using self-reported and objective function assessment is essential to guide an effective individualized exercise prescription to prevent function decline in persons with kidney disease. This review focuses on the impact of kidney disease on skeletal muscle dysfunction in the context of the disablement process and reviews screening and treatment strategies that kidney health professionals can use in clinical practice to prevent functional decline and disability.

Knowledge, barriers and facilitators of exercise in dialysis patients: a qualitative study of patients, staff and nephrologists

BACKGROUND

Despite growing evidence on benefits of increased physical activity in hemodialysis (HD) patients and safety of intra-dialytic exercise, it is not part of standard clinical care, resulting in a missed opportunity to improve clinical outcomes in these patients. To develop a successful exercise program for HD patients, it is critical to understand patients', staff and nephrologists' knowledge, barriers, motivators and preferences for patient exercise.

METHODS

In-depth interviews were conducted with a purposive sample of HD patients, staff and nephrologists from 4 dialysis units. The data collection, analysis and interpretation followed Criteria for Reporting Qualitative Research guidelines. Using grounded theory, emergent themes were identified, discussed and organized into major themes and subthemes.

RESULTS

We interviewed 16 in-center HD patients (mean age 60 years, 50% females, 63% blacks), 14 dialysis staff members (6 nurses, 3 technicians, 2 dietitians, 1 social worker, 2 unit administrators) and 6 nephrologists (50% females, 50% in private practice). Although majority of the participants viewed exercise as beneficial for overall health, most patients failed to recognize potential mental health benefits. Most commonly reported barriers to exercise were dialysis-related fatigue, comorbid health conditions and lack of motivation. Specifically for intra-dialytic exercise, participants expressed concern over safety and type of exercise, impact on staff workload and resistance to changing dialysis routine. One of the most important motivators identified was support from friends, family and health care providers. Specific recommendations for an intra-dialytic exercise program included building a culture of exercise in the dialysis unit, and providing an individualized engaging program that incorporates education and incentives for exercising.

CONCLUSION

Patients, staff and nephrologists perceive a number of barriers to exercise, some of which may be modifiable. Participants desired an individualized intra-dialytic exercise program which incorporates education and motivation, and they provided a number of recommendations that should be considered when implementing such a program.

Nutrition, vitamin D, and health outcomes in hemodialysis: time for a feeding frenzy?

PURPOSE OF REVIEW

The role of nutrition and nutritional supplementation in dialysis recently has been reinvigorated, with small clinical trials exploring surrogate outcomes and larger epidemiologic studies generating treatment hypotheses requiring further study. The present review focuses on major aspects of nutrition and outcomes in hemodialysis patients: protein and calorie intake and nutritional vitamin D supplementation.

RECENT FINDINGS

Building on data from small studies, two large, quasi-experimental cohort studies showed significant mortality benefits associated with oral nutritional supplements provided during dialysis, suggesting potential options for ameliorating the protein-energy wasting that is common in dialysis patients and associated with poor outcomes. Multiple cohort studies suggest, both in the general population and in dialysis, that higher 25(OH) vitamin D levels are associated with improved outcomes; however, no major mortality trials exist in dialysis, and the smaller, surrogate studies conducted to date have been disappointing, showing no consistent benefits in surrogate outcomes including inflammation and anemia, despite appropriate responses of vitamin D levels to repletion.

SUMMARY

Nutritional interventions are attractive options for improving outcomes in dialysis patients. Nutritional protein supplements have considerable promise, but require further study, preferably in a large, generalizable pragmatic trial. Small nutritional vitamin D supplementation trials in dialysis have had disappointing results. In the absence of new data, there appears to be no role for routine assessment or repletion of 25(OH) vitamin D deficiency or insufficiency in dialysis.

Design and methods of CYCLE-HD: improving cardiovascular health in patients with end stage renal disease using a structured programme of exercise: a randomised control trial

BACKGROUND

There is emerging evidence that exercise training could positively impact several of the cardiovascular risk factors associated with sudden cardiac death amongst patients on haemodialysis. The primary aim of this study is to evaluate the effect of an intradialytic exercise programme on left ventricular mass.

METHOD AND DESIGN

Prospective, randomised cluster open-label blinded endpoint clinical trial in 130 patients with end stage renal disease on haemodialysis. Patients will be randomised 1:1 to either 1) minimum of 30 min continuous cycling thrice weekly during dialysis or 2) standard care. The primary outcome is change in left ventricular mass at 6 months, assessed by cardiac MRI (CMR). In order to detect a difference in LV mass of 15 g between groups at 80 % power, a sample size of 65 patients per group is required. Secondary outcome measures include abnormalities of cardiac rhythm, left ventricular volumes and ejection fraction, physical function measures, anthropometric measures, quality of life and markers of inflammation, with interim assessment for some measures at 3 months.

DISCUSSION

This study will test the hypothesis that an intradialytic programme of exercise leads to a regression in left ventricular mass, an important non-traditional cardiovascular risk factor in end stage renal disease. For the first time this will be assessed using CMR. We will also evaluate the efficacy, feasibility and safety of an intradialytic exercise programme using a number of secondary end-points. We anticipate that a positive outcome will lead to both an increased patient uptake into established intradialytic programmes and the development of new programmes nationally and internationally.

TRIAL REGISTRATION NUMBER

ISRCTN11299707 (registration date 5(th) March 2015).

A Qualitative Study to Explore Patient and Staff Perceptions of Intradialytic Exercise

BACKGROUND AND OBJECTIVES

Randomized, controlled trials show that regular exercise is beneficial for patients on hemodialysis. Intradialytic exercise may have additional benefits, such as amelioration of treatment-related symptoms. However, the factors that influence the implementation of intradialytic exercise are largely unknown.

DESIGN, SETTING, PARTICIPANTS, & MEASUREMENTS

Individual semistructured interviews were conducted with a purposive sample of patients on hemodialysis who had participated in a pilot randomized, controlled trial on intradialytic exercise and dialysis staff that worked in the unit during the trial. The trial took place from July to December of 2014 and enrolled 31 patients. Interviews were conducted from April to December of 2014. Interview coding followed an inductive and broad-based approach. Thematic analysis was used to group codes into common themes, first individually and then, across staff and patient interviews.

RESULTS

Twenty-five patients and 11 staff were interviewed. Three themes common to both groups emerged: support, norms (expected practices) within the dialysis unit, and the role of the dialysis nurse. The support of the kinesiologist enhanced patients' confidence and sense of capability and was a key component of implementation. However, the practice of initiating exercise at the start of the shift was a barrier to staff participation. Staff focused on the technical aspects of their role in intradialytic exercise, whereas patients viewed encouragement and assistance with intradialytic exercise as the staff's role. An additional theme of no time (for staff to participate in intradialytic exercise) was influenced by its low priority in their workflow and the demands of the unit. The staff's emphasis on patients setting up their own equipment and enhanced social interaction among participants were additional themes that conveyed the unintended consequences of the intervention.

CONCLUSIONS

The kinesiologist-patient interactions and staff readiness for intradialytic exercise were important factors in the implementation of intradialytic exercise. Understanding how unit workflow and the personal values of staff can influence implementation may improve the design of intradialytic exercise interventions.

Patient and Staff Perceptions of Intradialytic Exercise before and after Implementation: A Qualitative Study

Introduction

Despite guidance and evidence for the beneficial effects of intradialytic exercise (IDE), such programmes are rarely adopted within practice and little is known about how they may best be sustained. The Theoretical Domains Framework (TDF) was used to guide the understanding of the barriers and facilitators to initial and ongoing IDE participation and to understand how these are influential at each stage.

Materials and Methods

Focus groups explored patient (n=24) and staff (n=9) perceptions of IDE prior to the introduction of a programme and, six months later, face to face semi-structured interviews captured exercising patients (n=11) and staffs’ (n=8) actual experiences. Data were collected at private and NHS haemodialysis units within the UK. All data were audio-recorded, translated where necessary, transcribed verbatim and subject to framework analysis.

Results

IDE initiation can be facilitated by addressing the pre-existing beliefs about IDE through the influence of peers (for patients) and training (for staff). Participation was sustained through the observation of positive outcomes and through social influences such as teamwork and collaboration. Despite this, environment and resource limitations remained the greatest barrier perceived by both groups.

Conclusions

Novel methods of staff training and patient education should enhance engagement. Programmes that clearly highlight the benefits of IDE should be more successful in the longer term. The barrier of staff workload needs to be addressed through specific guidance that includes recommendations on staffing levels, roles, training and skill mix.

A nurse-led case management program on home exercise training for hemodialysis patients: A randomized controlled trial

BACKGROUND

Patients on maintenance hemodialysis suffer from diminished physical health. Directly supervised exercise programs have been shown to be effective at improving physical function and optimizing well-being. However, nurses seldom include an exercise intervention in the care plan for hemodialysis patients.

OBJECTIVES

The purpose of this study was to examine the effects of a 12-week nurse-led case management program on home exercise training for hemodialysis patients.

DESIGN

The study was a randomized, two-parallel group trial.

SETTINGS

Hemodialysis units in two tertiary hospitals in Nanjing, mainland China.

PARTICIPANTS

One hundred and thirteen adult patients who have been in stable condition while on dialysis treatment for more than 3 months were recruited and randomly assigned to either the study group (n=57) or the control group (n=56).

METHODS

Both groups underwent a brief weekly in-center exercise training session before their dialysis sessions for the first 6 weeks. The study group received additional nurse case management weekly for the first 6 weeks and biweekly for the following 6 weeks. The intervention was to facilitate patients in performing regular exercise at home. Outcome measures, including gait speed, 10-repetition sit-to-stand performance, and quality of life were collected at baseline, and at 6 and 12 weeks into the program.

RESULTS

The results revealed that patients in the study group demonstrated greater increases in normal gait speed [F(1,111)=4.42, p=0.038] than the control group. For the study group, a mean increase of 12.02 (±3.03)centimeters/second from baseline to week 12 was found. With regard to the fast gait speed, there was a marginally significant between-group effect [F(1,111)=3.93, p=0.050]. The study group showed a mean improvement of 11.08 (±3.32)cm/s, from baseline to week 12. Patients from both groups showed improvements in their 10-repetition sit-to-stand performance. The between-group differences approached significance [F(1,111)=3.92, p=0.050], with the study group showed greater improvement than the control group. The time taken by the patients in the study group to complete the 10-STS test increased by 5.75 (±3.88)s from baseline to week 12. Significant improvements in quality of life across three time points were found only in the study group.

CONCLUSIONS

Home exercise using a nurse-led case management approach is practical and effective in improving the physical function and self-perceived health of stable hemodialysis patients.

It's a Non-Dialysis Day… Do You Know How Your Patient Is Doing? A Case for Research into Interdialytic Activity

Hemodialysis (HD) patients are less active than their healthy counterparts; this is associated with higher mortality. Healthcare workers observe their patients only during HD, which accounts for about 7% of the week. Knowing more about what occurs in between sessions, particularly with respect to physical activity, may improve patient care and prognosis. Yet without a standard method to measure interdialytic activity, it is difficult to compare the effect of interventions. However, it is unclear how interdialytic activity can be accurately measured. Since activity associated with quality of life is multi-dimensional, objective and subjective tools should be used in conjunction. While commercially available tracking devices can be seamlessly incorporated into everyday life and can increase awareness of user's activity, their validation is needed in the HD population. Fertile topics for research should include the relationship between objective and subjective measures in HD patients, and the investigation of physical activity in non-ambulatory HD patients.