A Secondary Analysis of Short- and Long-Term Variability of Inspiratory Muscle Performance in People Living With SCI.
Top Spinal Cord Inj Rehabil
; 29(2): 97-106, 2023.
Article
em En
| MEDLINE
| ID: mdl-37235194
ABSTRACT
Objectives:
To explore the expected variability in repeated short-term (ST) and long-term (LT) inspiratory muscle performance (IMP) in individuals with chronic spinal cord injury (SCI).Methods:
Maximal inspiratory pressure (MIP), sustained MIP (SMIP), and inspiratory duration (ID) were collected from 22 individuals with chronic SCI (C1-T9, American Spinal Injury Association Impairment Scale [AIS] A-C) over 18 months. ST data were collected four times within 2 weeks (n = 19). LT data were collected at two time points at least 7 months apart (n = 20).Results:
SMIP was the most reliable IMP assessment with an intraclass correlation coefficient (ICC) of 0.959, followed by MIP (ICC 0.874) and ID (ICC 0.689). The ID was the only ST measure to have a significant difference [MIP F(3, 54) = 2.5, p = .07; SMIP F(3, 54) = 1.3, p = .29; ID F(1.4, 25.6) = 4.8, p = .03]. Post hoc analysis showed the mean day 1 ST ID measure was significantly different from both days 3 and 4. The percent change of ID from day 3 to day 6 was 11.6%. No LT measures differed significantly [mean change (SD) [95% CI] for MIP 5.2 cm H2O (18.8) [-3.6, 13.9], p = .235; SMIP 60.9 pressure time unit (166.1) [-16.9, 138.6], p = .118; ID 0.1 s (2.5) [-1.1, 1.3], p = .855].Conclusion:
These data provide a foundation for understanding normal variance in ST and LT IMP in the SCI population. Change in MIP function outside 10% is likely a true and meaningful change and may help clinicians recognize individuals with SCI at risk for respiratory compromise. Future studies should explore changes in MIP and SMIP that are associated with meaningful functional changes.Palavras-chave
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Base de dados:
MEDLINE
Assunto principal:
Traumatismos da Medula Espinal
Idioma:
En
Ano de publicação:
2023
Tipo de documento:
Article