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Test–retest reliability, validation, and “minimal detectable change” scores for frequently reported tests of objective physical function in patients with non-dialysis chronic kidney disease

2018Journal article Open access
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dc.contributor.authorWilkinson, Thomas J.
dc.contributor.authorXenophontos, Soteris
dc.contributor.authorGould, Douglas W.
dc.contributor.authorVogt, Barbara P.
dc.contributor.authorViana, João L.
dc.contributor.authorSmith, Alice C.
dc.contributor.authorWatson, Emma L.
dc.date.accessioned2021-04-28T14:19:17Z
dc.date.available2021-04-28T14:19:17Z
dc.date.issued2018
dc.description.abstractPhysical function is an important outcome in chronic kidney disease (CKD). We aimed to establish the reliability, validity, and the "minimal detectable change" (MDC) of several common tests used in renal rehabilitation and research. In a repeated measures design, 41 patients with CKD not requiring dialysis (stage 3b to 5) were assessed at an interval of 6 weeks. The tests were the incremental shuttle walk test (ISWT), "sit-to-stand" (STS) test, estimated 1 repetition maximum for quadriceps strength (e1RM), and VO2peak by cardiopulmonary exercise testing (CPET). Reliability was assessed using intraclass correlation coefficient and Bland-Altman analysis, and absolute reliability by standard error of measurement and MDC. The ISWT, STS-60, e1RM, and CPET had "good" to "excellent" reliability (0.973, 0.927, 0.927, and 0.866), respectively. STS-5 reliability was poor (0.676). The MDC is ISWT, 20 m; STS-5, 7.5 s; STS-60, 4 reps; e1RM, 6.4 kg; VO2peak, 2.8 ml/kg/min. There was strong correlation between the ISWT and VO2peak (r = 0.73 and 0.74). While there was poor correlation between the STS-5 and e1RM (r = 0.14 and 0.47), better correlation was seen between STS-5 and ISWT (r = 0.55 and 0.74). In conclusion, the ISWT, STS-60, e1RM, and CPET are reliable tests of function in CKD. The ISWT is a valid means of exercise capacity. The MDC can help researchers and rehabilitation professionals interpret changes following an intervention.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.doi10.1080/09593985.2018.1455249pt_PT
dc.identifier.urihttp://hdl.handle.net/10400.24/1763
dc.language.isoengpt_PT
dc.subjectAdultpt_PT
dc.subjectAgedpt_PT
dc.subjectAged, 80 and overpt_PT
dc.subjectExercise Testpt_PT
dc.subjectFemalept_PT
dc.subjectHealth Statuspt_PT
dc.subjectHumanspt_PT
dc.subjectMalept_PT
dc.subjectMiddle Agedpt_PT
dc.subjectOxygen Consumptionpt_PT
dc.subjectPredictive Value of Testspt_PT
dc.subjectQuadriceps Musclept_PT
dc.subjectRecovery of Functionpt_PT
dc.subjectRenal Insufficiency, Chronicpt_PT
dc.subjectReproducibility of Resultspt_PT
dc.subjectTime Factorspt_PT
dc.subjectTreatment Outcomept_PT
dc.subjectCardiorespiratory Fitnesspt_PT
dc.subjectExercise Tolerancept_PT
dc.subjectMinimal Clinically Important Differencept_PT
dc.subjectMuscle Strengthpt_PT
dc.subjectWalkingpt_PT
dc.titleTest–retest reliability, validation, and “minimal detectable change” scores for frequently reported tests of objective physical function in patients with non-dialysis chronic kidney diseasept_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage576pt_PT
oaire.citation.issue6pt_PT
oaire.citation.startPage565pt_PT
oaire.citation.titlePhysiotherapy Theory and Practicept_PT
oaire.citation.volume35pt_PT
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT

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