Abstract
Purpose: The Test of Incremental Respiratory Endurance (TIRE) provides a comprehensive assessment of inspiratory muscle performance by measuring maximal inspiratory pressure (MIP) over time. The integration of MIP over inspiratory duration (ID) provides the sustained maximal inspiratory pressure (SMIP). Evidence on the reliability and validity of these measurements in COPD is not currently available. Therefore, we assessed the reliability, responsiveness and construct validity of the TIRE measures of inspiratory muscle performance in subjects with COPD. Patients and methods: Test–retest reliability, known-groups and convergent validity assessments were implemented simultaneously in 81 male subjects with mild to very severe COPD. TIRE measures were obtained using the portable PrO2 device, following standard guidelines. Results: All TIRE measures were found to be highly reliable, with SMIP demonstrating the strongest test–retest reliability with a nearly perfect intraclass correlation coefficient (ICC) of 0.99, while MIP and ID clustered closely together behind SMIP with ICC values of about 0.97. Our findings also demonstrated known-groups validity of all TIRE measures, with SMIP and ID yielding larger effect sizes when compared to MIP in distinguishing between subjects of different COPD status. Finally, our analyses confirmed convergent validity for both SMIP and ID, but not MIP. Conclusion: The TIRE measures of MIP, SMIP and ID have excellent test–retest reliability and demonstrated known-groups validity in subjects with COPD. SMIP and ID also demonstrated evidence of moderate convergent validity and appear to be more stable measures in this patient population than the traditional MIP.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 1569-1576 |
| Number of pages | 8 |
| Journal | International Journal of COPD |
| Volume | 13 |
| DOIs | |
| State | Published - May 15 2018 |
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Keywords
- Chronic airflow obstruction
- Psychometrics
- Respiratory muscles
ASJC Scopus subject areas
- Pulmonary and Respiratory Medicine
- Health Policy
- Public Health, Environmental and Occupational Health
Cite this
Reliability and validity of the test of incremental respiratory endurance measures of inspiratory muscle performance in COPD. / Formiga, Magno F.; Roach, Kathryn E.; Vital, Isabel; Urdaneta, Gisel; Balestrini, Kira; Calderon-Candelario, Rafael A.; Campos, Michael A.; Cahalin, Lawrence P.
In: International Journal of COPD, Vol. 13, 15.05.2018, p. 1569-1576.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Reliability and validity of the test of incremental respiratory endurance measures of inspiratory muscle performance in COPD
AU - Formiga, Magno F.
AU - Roach, Kathryn E.
AU - Vital, Isabel
AU - Urdaneta, Gisel
AU - Balestrini, Kira
AU - Calderon-Candelario, Rafael A.
AU - Campos, Michael A.
AU - Cahalin, Lawrence P.
PY - 2018/5/15
Y1 - 2018/5/15
N2 - Purpose: The Test of Incremental Respiratory Endurance (TIRE) provides a comprehensive assessment of inspiratory muscle performance by measuring maximal inspiratory pressure (MIP) over time. The integration of MIP over inspiratory duration (ID) provides the sustained maximal inspiratory pressure (SMIP). Evidence on the reliability and validity of these measurements in COPD is not currently available. Therefore, we assessed the reliability, responsiveness and construct validity of the TIRE measures of inspiratory muscle performance in subjects with COPD. Patients and methods: Test–retest reliability, known-groups and convergent validity assessments were implemented simultaneously in 81 male subjects with mild to very severe COPD. TIRE measures were obtained using the portable PrO2 device, following standard guidelines. Results: All TIRE measures were found to be highly reliable, with SMIP demonstrating the strongest test–retest reliability with a nearly perfect intraclass correlation coefficient (ICC) of 0.99, while MIP and ID clustered closely together behind SMIP with ICC values of about 0.97. Our findings also demonstrated known-groups validity of all TIRE measures, with SMIP and ID yielding larger effect sizes when compared to MIP in distinguishing between subjects of different COPD status. Finally, our analyses confirmed convergent validity for both SMIP and ID, but not MIP. Conclusion: The TIRE measures of MIP, SMIP and ID have excellent test–retest reliability and demonstrated known-groups validity in subjects with COPD. SMIP and ID also demonstrated evidence of moderate convergent validity and appear to be more stable measures in this patient population than the traditional MIP.
AB - Purpose: The Test of Incremental Respiratory Endurance (TIRE) provides a comprehensive assessment of inspiratory muscle performance by measuring maximal inspiratory pressure (MIP) over time. The integration of MIP over inspiratory duration (ID) provides the sustained maximal inspiratory pressure (SMIP). Evidence on the reliability and validity of these measurements in COPD is not currently available. Therefore, we assessed the reliability, responsiveness and construct validity of the TIRE measures of inspiratory muscle performance in subjects with COPD. Patients and methods: Test–retest reliability, known-groups and convergent validity assessments were implemented simultaneously in 81 male subjects with mild to very severe COPD. TIRE measures were obtained using the portable PrO2 device, following standard guidelines. Results: All TIRE measures were found to be highly reliable, with SMIP demonstrating the strongest test–retest reliability with a nearly perfect intraclass correlation coefficient (ICC) of 0.99, while MIP and ID clustered closely together behind SMIP with ICC values of about 0.97. Our findings also demonstrated known-groups validity of all TIRE measures, with SMIP and ID yielding larger effect sizes when compared to MIP in distinguishing between subjects of different COPD status. Finally, our analyses confirmed convergent validity for both SMIP and ID, but not MIP. Conclusion: The TIRE measures of MIP, SMIP and ID have excellent test–retest reliability and demonstrated known-groups validity in subjects with COPD. SMIP and ID also demonstrated evidence of moderate convergent validity and appear to be more stable measures in this patient population than the traditional MIP.
KW - Chronic airflow obstruction
KW - Psychometrics
KW - Respiratory muscles
UR - http://www.scopus.com/inward/record.url?scp=85047058810&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85047058810&partnerID=8YFLogxK
U2 - 10.2147/COPD.S160512
DO - 10.2147/COPD.S160512
M3 - Article
C2 - 29805255
AN - SCOPUS:85047058810
VL - 13
SP - 1569
EP - 1576
JO - International Journal of COPD
JF - International Journal of COPD
SN - 1176-9106
ER -