PMID- 38015070 OWN - NLM STAT- MEDLINE DCOM- 20240321 LR - 20240321 IS - 1557-0584 (Electronic) IS - 1557-0576 (Linking) VI - 48 IP - 2 DP - 2024 Apr 1 TI - Reliability and Minimal Detectable Change for Respiratory Muscle Strength Measures in Individuals With Multiple Sclerosis. PG - 94-101 LID - 10.1097/NPT.0000000000000462 [doi] AB - BACKGROUND AND PURPOSE: The test-retest reliability and minimal detectable changes (MDCs) for respiratory muscle strength measures have not been determined in individuals with multiple sclerosis (MS). This study determined the test-retest reliability and MDCs for specific respiratory muscle strength measures, as well as their associations with health-related quality of life (HRQoL), disability, dyspnea, and physical activity level measures in this population. In addition, the study examined differences in respiratory muscle strength between different degrees of disability. METHODS: Sixty-one individuals with MS attended 2 appointments separated by 7 to 10 days. Respiratory muscle strength was evaluated by maximal inspiratory and expiratory pressures (MIP/MEP), HRQoL by EuroQol-5D-5L (index and visual analog scale [EQ-VAS]), disability by the Expanded Disability Status Scale, dyspnea by the Medical Research Council scale, and physical activity levels by the International Physical Activity Questionnaire. RESULTS: Respiratory muscle strength measures had excellent test-retest reliability (ICC >/= 0.92). The MDC for MIP is 15.42 cmH 2 O and for MEP is 17.84 cmH 2 O. Participants with higher respiratory muscle strength (MIP/MEP cmH 2 O and percentage of predicted values) had higher HRQoL ( r = 0.54-0.62, P < 0.01, EQ-5D-5L index; r = 0.30-0.42, P < 0.05, EQ-VAS); those with higher expiratory muscle strength (cmH 2 O and percentage of predicted values) had lower levels of disability ( r /= 0.73). DISCUSSION AND CONCLUSION: Respiratory muscle strength measures provide excellent test-retest reliability in individuals with MS. MDCs can be interpreted and applied in the clinical setting. Low respiratory muscle strength can contribute to a poor HRQoL; specifically, expiratory muscle strength appears to have the strongest influence on disability status and dyspnea. CI - Copyright (c) 2024 Academy of Neurologic Physical Therapy, APTA. FAU - Aguilar-Zafra, Sandra AU - Aguilar-Zafra S AD - Departamento de Fisioterapia, Facultad de Ciencias de la Salud, Motion in Brains Research Group, Centro Superior de Estudios Universitarios La Salle, Universidad Autonoma de Madrid, Spain, and Texum S.L. Physiotherapy Center, Coslada, Madrid, Spain (S.A.Z.); Department of Radiology, Rehabilitation and Physiotherapy, Faculty of Nursing, Physiotherapy and Podiatry, Complutense University of Madrid, Madrid, Spain (R.F.G.); and Department of Radiology, Rehabilitation and Physiotherapy, Faculty of Nursing, Physiotherapy and Podiatry, Universidad Complutense de Madrid, IdISSC, Madrid, Spain (T.d.C., I.L.d.U.V.). FAU - Fabero-Garrido, Raul AU - Fabero-Garrido R FAU - Del Corral, Tamara AU - Del Corral T FAU - Lopez-de-Uralde-Villanueva, Ibai AU - Lopez-de-Uralde-Villanueva I LA - eng PT - Journal Article DEP - 20231124 PL - United States TA - J Neurol Phys Ther JT - Journal of neurologic physical therapy : JNPT JID - 101193365 SB - IM MH - Humans MH - *Quality of Life MH - *Multiple Sclerosis MH - Reproducibility of Results MH - Muscle Strength/physiology MH - Dyspnea MH - Respiratory Muscles/physiology COIS- The authors declare no conflict of interest. EDAT- 2023/11/28 12:41 MHDA- 2024/03/21 12:48 CRDT- 2023/11/28 09:54 PHST- 2024/03/21 12:48 [medline] PHST- 2023/11/28 12:41 [pubmed] PHST- 2023/11/28 09:54 [entrez] AID - 01253086-990000000-00051 [pii] AID - 10.1097/NPT.0000000000000462 [doi] PST - ppublish SO - J Neurol Phys Ther. 2024 Apr 1;48(2):94-101. doi: 10.1097/NPT.0000000000000462. Epub 2023 Nov 24.