Abstract
Purpose: To examine relationships between self-report and performance-based measures of physical function in ICU patients randomized to standardized rehabilitation therapy (SRT) or usual care (UC). Methods: Physical function was assessed in 257 ICU patients using self-report (physical functioning scale of the SF-36 (SF-36 PFS)) and the functional performance inventory-short form (FPI-SF) as well as performance-based measures (Short Physical Performance Battery (SPPB)) and muscular strength (MS). Assessments were at hospital discharge, 2, 4, and 6 months. Results: Correlations between self-report and performance-based measures were not significantly different between the two groups. When examining the entire cohort, a significant, but weak, correlation (r = 0.286) was found between the SF-36 PFS and the SPPB. At 2 months, moderate correlations were found between self-report and performance-based measures. The SF-36 PFS and FPI were significantly correlated with the SPPB (r = 0.536 and 0.553, respectively) and muscular strength (r = 0.413 and 0.431, respectively). Similar associations were seen at 4 and 6 months in both groups. Conclusion: Self-report and performance-based measures of physical function appear to assess different constructs at hospital discharge. Following recovery, these measures converge, but indicate different constructs are being assessed. As such, both self-report and performance-based measures of physical function should be used with ICU patients.
Original language | English |
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Pages (from-to) | 19-23 |
Number of pages | 5 |
Journal | Journal of Critical Care |
Volume | 51 |
DOIs | |
State | Published - Jun 2019 |
Bibliographical note
Funding Information:This work was supported by the National Institutes of Health [Grants NR011186, HL53755]; and the Wake Forest University Claude D. Pepper Older Americans Independence Center [P30-AG21332].
Funding Information:
This work was supported by the National Institutes of Health [Grants NR011186 , HL53755 ]; and the Wake Forest University Claude D. Pepper Older Americans Independence Center [ P30-AG21332 ].
Publisher Copyright:
© 2019
Keywords
- Acute respiratory failure
- Critical care
- Critical illness
- Intensive care unit
- Physical function
- Strength
ASJC Scopus subject areas
- Critical Care and Intensive Care Medicine