The effect of exercise and nutritional supplementation on frailty and dialysis-related measures in end-stage kidney disease patients- A pilot study

ISRCTN ISRCTN58806515
DOI https://doi.org/10.1186/ISRCTN58806515
Submission date
23/01/2024
Registration date
26/01/2024
Last edited
21/10/2024
Recruitment status
No longer recruiting
Overall study status
Completed
Condition category
Urological and Genital Diseases
Prospectively registered
Protocol
Statistical analysis plan
Results
Individual participant data
Record updated in last year

Plain English Summary

Background and study aims
“Frailty” is a medical term for a condition that affects a large number of people as they get older. In many ways, it refers to what people mean when they say someone is “getting old”, however, it is a condition that can affect people of all ages. One of the main ways to identify frailty is to look for evidence of weight loss, weakness, slowness, reduced activity or a feeling of exhaustion. Another is to count up the number of illnesses or impairments someone has accumulated over their life. Frailty is common and becoming even more so. Overall, about 1 in 10 people are frail. This increases as we age, rising to almost 1 in 4 over the age of 90. It is also very common for patients on dialysis with approximately 3 in 10 people on dialysis being frail. Frailty means that an individual is less well able to tolerate anything that may affect their well-being (for example, infection, side-effects of medications, hospital admission or medical procedures). It is known that unfortunately, the more frail a person is, the more likely they are to develop a range of illnesses, be admitted to hospital or require nursing home care. Thankfully, more and more research shows that exercise and nutritional supplements can slow the onset of frailty. Some research has also demonstrated the benefits of ‘reversing frailty’ in the general population with exercise and nutrition. However, very few studies have included patients who are on dialysis. This research study is taking place to find out if the benefits of exercise and nutrition also apply to frail individuals with kidney disease who are receiving dialysis and whether this intervention can reverse frailty in this population.

Who can participate?
Frail adults with end-stage kidney disease aged 18 years old and over will be identified from the dialysis population at University Hospital Waterford.

What does the study involve?
Once identified patients will be randomized to an intervention arm and will undergo a 12-week exercise program or a control arm and will continue with their usual care and not undergo the exercise intervention. Patients will have their daily protein intake assessed. Patients allotted to the intervention arm will also be advised to supplement their diet with an extra protein supplement to achieve a daily protein intake of 1.2g/kg/day. The protein supplement will be individualized for each patient and will be chosen in conjunction with the Renal Dietician based in the dialysis unit.

What are the possible benefits and risks of participating?
There are no guarantees that this intervention will be of benefit. The available evidence would suggest that exercise and nutritional supplementation can improve physical function and psychological wellbeing in frail adults in the general population. However, this has not been conclusively shown in frail adults with kidney disease on dialysis and that is what this study is helping to answer.

Engaging in exercise brings an associated risk of minor complications such as muscle aches or strain. If people have a history of (or several risk factors for) heart disease or lung disease, there may also be a risk of more serious adverse effects. It is difficult to put an exact figure on this risk as it differs from person to person. To limit this risk, a set of screening questions are asked and advice is given about how to know when a participant might be exercising too vigorously. For emergencies, the hospital staff will be able to attend to the participant like for all patients on dialysis.

Where is the study run from?
University Hospital Waterford (Ireland)

When is the study starting and how long is it expected to run for?
February 2023 to November2024

Who is funding the study?
Royal College of Surgeons in Ireland (RCSI) under the Strategic Academic Recruitment (StAR) program.

Who is the main contact?
Robert Casey, 110309713@umail.ucc.ie. This research study will be primarily organized by Dr. Robert Casey over two years from July 2023 to July 2025, to achieve the academic qualification of MD as part of his specialist training in Nephrology. The study will be supervised by Dr. Catherine Brown (Consultant Nephrologist), Dr Sean Leavey (Consultant Nephrologist) and Dr. Padraig Bambrick (Consultant for Medicine for the Elderly).

Contact information

Dr Robert Casey
Public, Scientific

University Hospital Waterford
Dunmore Road
Waterford
X91ER8E
Ireland

ORCiD logoORCID ID 0009-0007-9053-2631
Phone +051 0861766549
Email 110309713@umail.ucc.ie
Dr Catherine Brown
Principal Investigator

University Hospital Waterford
Dunmore Road
Waterford
X91ER8E
Ireland

Phone +051-842753
Email CatherineM.Brown@hse.ie

Study information

Study designSingle-center interventional pilot randomized controlled trial
Primary study designInterventional
Secondary study designPilot randomized controlled trial
Study setting(s)Hospital
Study typeOther, Quality of life, Treatment
Participant information sheet 44928_PIS_Heamodialysis.pdf
Scientific titleThe effect of exercise and nutritional supplementation on frailty and dialysis-related measures in end-stage kidney disease patients- A pilot study
Study hypothesisCurrent hypothesis as of 21/10/2024:

The hypothesis is that a standardized exercise programme for frail adults with end-stage kidney disease is feasible to perform.

_____

Previous hypothesis:

The hypothesis is that a standardized exercise programme for frail adults with end-stage kidney disease will lead to a measurable difference in clinical markers of frailty
Ethics approval(s)

1. Approved 18/09/2023, The Research Ethics Committee, REC, HSE, South East (Research Ethics Office, University Hospital Waterford, Waterford, X91 ER8E, Ireland; +351 051 842391; Martina.Walsh5@hse.ie), ref: 23.49

2. Approved 15/10/2024, The Research Ethics Committee, REC, HSE, South East (Research Ethics Office, University Hospital Waterford, Waterford, X91 ER8E, Ireland; +351 051 842391; Martina.Walsh5@hse.ie), ref: 24.36

ConditionFrailty and end-stage kidney disease
InterventionCurrent interventions as of 21/10/2024:

This study will take the form of a non-blinded pilot randomized controlled trial. Frail adults with end-stage kidney disease (ESKD) will be identified from the ESKD patient population in University Hospital Waterford. Frail patients will be identified using the Rockwood frailty scale. Once identified patients will be randomized using a stratified randomization method to aid balance for covariates of age and sex to an intervention arm and will undergo either a 12-week exercise program or a control arm and will continue with usual care. Patients will have their daily protein intake assessed. Patients randomized to the intervention arm will also be advised to supplement their diet with extra protein to achieve a daily protein intake of 1.2g/kg/day. The protein supplement will be individualized for each patient and will be chosen in conjunction with the Renal Dietician based in the dialysis unit.

All patients included in the study will undergo baseline assessment and repeat assessment at 12 weeks and 18 weeks. Assessments will take place in the hemodialysis unit at University Hospital Waterford.

The study will develop a novel exercise program suitable for frail adults with ESKD. To do so, a consensus group will be formed comprising of Consultant Nephrologists, a Consultant Geriatrician, a Nephrology Registrar, senior physiotherapists, a senior occupational therapist, senior dialysis nurses and a Sports & Exercise Scientist. A range of exercises will be agreed upon via an appropriate group consensus technique, in the areas of aerobic, resistance, balance and flexibility training.

To assess feasibility outcomes such as acceptability, demand, implementation, practicality, integration, adaptation, and expansion we will perform short semi structured interviews with study participants once the intervention is complete. We will also organize a focus group with dialysis staff nurses. Both the interviews and the focus group will be conducted in a quiet private area. The interviews will be relatively short - aiming for 20-30 minutes each. Adherence data to the exercise intervention and protein supplementation was also collected over the intervention period.

_____

Previous interventions:

This study will take the form of a non-blinded randomized controlled trial. Frail adults with end-stage kidney disease (ESKD) will be identified from the ESKD patient population in University Hospital Waterford. Frail patients will be identified using the Rockwood frailty scale. Once identified patients will be randomized using a stratified randomization method to aid balance for covariates of age and sex to an intervention arm and will undergo either a 12-week exercise program or a control arm and will continue with usual care. Patients will have their daily protein intake assessed. Patients randomized to the intervention arm will also be advised to supplement their diet with extra protein to achieve a daily protein intake of 1.2g/kg/day. The protein supplement will be individualized for each patient and will be chosen in conjunction with the Renal Dietician based in the dialysis unit.

All patients included in the study will undergo baseline assessment and repeat assessment at 12 weeks and 18 weeks. Assessments will take place in the hemodialysis unit at University Hospital Waterford.

The study will develop a novel exercise program suitable for frail adults with ESKD. To do so, a consensus group will be formed comprising of Consultant Nephrologists, a Consultant Geriatrician, a Nephrology Registrar, senior physiotherapists, a senior occupational therapist, senior dialysis nurses and a Sports & Exercise Scientist. A range of exercises will be agreed upon via an appropriate group consensus technique, in the areas of aerobic, resistance, balance and flexibility training.

There will be an initial one-month pilot involving a small number of participants to develop the exercise program. This period will be used to assess the appropriateness, tolerability and preference of the subjects for various exercises, as well as the optimal duration, intensity, rate of escalation and duration of sessions. There will then be refinement of the protocol through further rounds of the group consensus process.
Intervention typeMixed
Primary outcome measureCurrent primary outcome measure as of 21/10/2024:

1. Evaluate the feasibility of conducting a definitive randomized controlled trial. Acceptability, demand, implementation, practicality, integration, adaptation, and expansion measured post completion of the exercise intervention using:
1.1.Semi-structured interviews with ESKD participants in the study
1.2.Focus group with nursing staff from the dialysis unit
2. Change in frailty score measured using the Fried Frailty Scale at baseline, 12 and 18 weeks

_____

Previous primary outcome measure:

Change in frailty score measured using the Fried Frailty Scale at baseline, 12 and 18 weeks
Secondary outcome measuresThe following secondary outcome measures are assessed at baseline,12 weeks,18 weeks:
1. Change in frailty-related biomarkers/inflammatory markers measured using blood C-reactive protein (CRP) and D-Dimer levels
2. Change in dialysis adequacy measured using urea reduction ratio (URR)/Kt/V
3. Change in QoL scores measured using the Montreal Cognitive Assessment (MoCA), The Kidney Disease Quality of Life-Short Form and the Beck Depression Inventory-II
4. Number of treatment-related adverse outcomes – non-serious adverse events (i.e fatigue, pain) collected weekly by participant review; serious adverse events (i.e hospitalization, serious risk of deterioration in patient health, death) collection on occurrence and review event with principal investigator to determine if likely related to intervention

Overall study start date01/02/2023
Overall study end date15/11/2024

Eligibility

Participant type(s)Patient
Age groupAdult
Lower age limit18 Years
SexBoth
Target number of participants25
Participant inclusion criteria1. Adults >18 years old
2. Patient with ESKD currently receiving haemodialysis or peritoneal dialysis
3. Identified as pre-frail/frail using Freid Frailty Scale
Participant exclusion criteria1. Severe functional disability
2. Cognitive impairment likely to preclude involvement in an exercise program
3. Current participation in an alternative exercise programme
4. Poorly controlled angina or heart failure or coronary event in the last 6 months
5. Receiving palliative care or life expectancy less than 6 months
Recruitment start date01/02/2024
Recruitment end date01/04/2024

Locations

Countries of recruitment

  • Ireland

Study participating centre

University Hospital Waterford
Dunmore Road
Waterford
X91 ER8E
Ireland

Sponsor information

University Hospital Waterford
Hospital/treatment centre

Dunmore Road
Waterford
X91 ER8E
Ireland

Phone +051 848 000
Email infoline1@hse.ie
Website https://www.hse.ie/eng/services/list/3/acutehospitals/hospitals/waterford/
ROR logo "ROR" https://ror.org/007pvy114

Funders

Funder type

University/education

Royal College of Surgeons in Ireland
Private sector organisation / Universities (academic only)
Alternative name(s)
Coláiste Ríoga na Máinleá in Éirinn, RCSI
Location
Ireland

Results and Publications

Intention to publish date01/08/2025
Individual participant data (IPD) Intention to shareYes
IPD sharing plan summaryAvailable on request
Publication and dissemination planPlanned publication in a high-impact peer-reviewed journal
IPD sharing planThe data sets generated during and/or analysed during the current study will be available upon request from Robert Casey, 110309713@umail.ucc.ie.
1. The type of data that will be shared - The information recorded as part of this study will remain confidential between the participant and the researcher. No paper records will contain personal identifiers. Instead, they will be marked with a code which requires a key, held only by the researcher. These paper records will be securely stored in a locked filing cabinet and then transferred to an electronic record where they will be encrypted at point of storage on local secure storage and only the Principal Investigator (Dr Catherine brown) and MD student (Dr Robert Casey) will have a decryption key. It may be necessary to share this data with researchers within the RCSI research network for assistance with statistical analysis. If this was required, the data would be irreversibly anonymised prior to transfer to other researchers. All data subjects have the right to request access to their data and a copy of it.
2. Timing for availability - All data subjects have the right to request access to their data and a copy of it. Would be made available upon request.
3. Whether consent from participants was required and obtained - Consent will be obtained by Dr. Robert Casey, MD student. Every effort will be made to ensure that all participants are fully informed prior to enrolment, through provision of all information in suitably worded language and visual representations to maximise understanding. In addition, an opportunity will be provided for participants to seek clarification of any issues prior to agreeing to participate. If queries or concerns remain after this process, then the individual may request assistance from a specified relative/friend/carer to assist them in gaining understanding to their satisfaction and achieve informed consent through an assisted decision-making process.
4. Comments on data anonymization- Data collected will be coded at point of collection and paper records securely stored in a locked filing cabinet in the dialysis unit. The data collected will be encrypted at point of storage on local secure storage-only the PI and MD student will have a decryption key. It may be necessary to share this data with researchers within the RCSI research network for assistance with statistical analysis. If this was required, the data would be irreversibly anonymised prior to transfer to other researchers.
5. Any ethical or legal restrictions – no ethical or legal restrictions

Study outputs

Output type Details Date created Date added Peer reviewed? Patient-facing?
Participant information sheet 24/01/2024 No Yes
Participant information sheet 24/01/2024 No Yes

Additional files

44928_PIS_Heamodialysis.pdf
44928_PIS_Peritoneal Dialysis.pdf

Editorial Notes

21/10/2024: The following changes were made to the trial record:
1. The public title was changed from "The effect of exercise and nutritional supplementation on frailty and dialysis-related measures in end-stage kidney disease patients" to "The effect of exercise and nutritional supplementation on frailty and dialysis-related measures in end-stage kidney disease patients- A pilot study".
2. The scientific title was changed from "The effect of exercise and nutritional supplementation on frailty and dialysis-related measures in end-stage kidney disease patients" to "The effect of exercise and nutritional supplementation on frailty and dialysis-related measures in end-stage kidney disease patients- A pilot study".
3. The ethics approval (2) was added.
4. The study design was changed from "Single-center interventional randomized controlled trial" to "Single-center interventional pilot randomized controlled trial".
5. The overall end date was changed from 01/10/2024 to 15/11/2024.
6. The target number of participants was changed from 32 to 25.
7. The plain English summary was updated to reflect these changes.
24/01/2024: Study's existence confirmed by the Research Ethics Office of the University Hospital Waterford.