Intrarater and Interrater Reliability Physical Function Measures in HD BCN

Study Overview
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Brief Summary
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The investigators will calculate values of absolute and relative reliability for intrarater reliability when the measures are taken during a hemodialysis treatment day and during a non-dialysis day. Interrater reliability between two different observers will be also calculated

Detailed Description
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Patients suffering from End Stage Renal Disease are commonly involved in haemodialysis treatment, which is the most common treatment at this stage. Haemodialysis substitutes the renal function but is associated with several alterations that lead to decrease in functional capacity. Many studies show that functional capacity is significantly worse than their healthy sedentary age - matched counterparts. The purpose of the present study is to calculate values of absolute and relative intrarater reliability (dialysis vs non dialysis day) and interrater reliability of different physical function measures (Short Physical Performance Battery, one-leg balance, Timed Up and go, sit to stand to sit tests, triceps and handgrip strength, six-minute walking test).

Official Title
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Intrarater Reliability in Different Days and Interrater Reliability of Physical Function Assessment in HD Patients

Conditions
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End Stage Renal Disease on Dialysis

Intervention / Treatment
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* Other: Reliability of physical function


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: At least 3 months in hemodialysis treatment Clinically stable Exclusion Criteria: Recent cardiac events (less than 3 months) Unable to exercise

Ages Eligible for Study
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Minimum Age: 18 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Arms and Interventions

| Intervention/Treatment |
| --- |
|Other: Reliability of physical function|Test-retest reliability of physical function in hemodialysis patients|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Change from baseline Short Physical Performance Battery at one week | Assess lower extremity, which includes objective performance-based measure of balance (side-by-side, semitandem and tandem), endurance (4m gait speed) and strength (five chair stands). Each component was scored from 0 to 4 and when summed yielded SPPB scores between 0 (poor) and 12 (best). | It will perform the test three times with one week interval between the testing sessions, one before hemodialysis, and the other one next week during a non-dialysis day | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Change from baseline Gait speed at one week at one week | Speed to cover 4 meters, in meters/second | It will perform the test three times with one week interval between the testing sessions, one before hemodialysis, and the other one next week during a non-dialysis day | 
| Change from baseline One-leg standing test at one week | Time achieved while standing on one leg | It will perform the test three times with one week interval between the testing sessions, one before hemodialysis, and the other one next week during a non-dialysis day | 
| Change from baseline Timed up and go at one week | Time to stand up, walk 3 meters, come back and sit down again | It will perform the test three times with one week interval between the testing sessions, one before hemodialysis, and the other one next week during a non-dialysis day | 
| Change from baseline Sit to stand 10 test at one week | Time to perform 10 repetitions sit to stand | It will perform the test three times with one week interval between the testing sessions, one before hemodialysis, and the other one next week during a non-dialysis day | 
| Change from baseline Sit to stand 60 test at one week | Sit to stand repetitions performed in 60 seconds | It will perform the test three times with one week interval between the testing sessions, one before hemodialysis, and the other one next week during a non-dialysis day | 
| Change from baseline One-leg heel rise test at one week | Number of heel rise repetitions achieved | It will perform the test three times with one week interval between the testing sessions, one before hemodialysis, and the other one next week during a non-dialysis day | 
| Change from baseline 6 minutes walk test at one week | Number of meters walked in 6 minutes | It will perform the test three times with one week interval between the testing sessions, one before hemodialysis, and the other one next week during a non-dialysis day | 
| Change from baseline Handgrip at one week | Bilateral handgrip strength | It will perform the test three times with one week interval between the testing sessions, one before hemodialysis, and the other one next week during a non-dialysis day |