Test-Retest Reliability and Physiological Responses Associated with the Steep Ramp Anaerobic Test in Patients with COPD
The Steep Ramp Anaerobic Test (SRAT) was developed as a clinical test of anaerobic leg muscle function for use in determining anaerobic power and in prescribing high-intensity interval exercise in patients with chronic heart failure and Chronic Obstructive Pulmonary Disease (COPD); however, neither...
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| Format: | Article |
| Language: | English |
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Wiley
2012-01-01
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| Series: | Pulmonary Medicine |
| Online Access: | http://dx.doi.org/10.1155/2012/653831 |
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| _version_ | 1832555138835808256 |
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| author | Robyn L. Chura Darcy D. Marciniuk Ron Clemens Scotty J. Butcher |
| author_facet | Robyn L. Chura Darcy D. Marciniuk Ron Clemens Scotty J. Butcher |
| author_sort | Robyn L. Chura |
| collection | DOAJ |
| description | The Steep Ramp Anaerobic Test (SRAT) was developed as a clinical test of anaerobic leg muscle function for use in determining anaerobic power and in prescribing high-intensity interval exercise in patients with chronic heart failure and Chronic Obstructive Pulmonary Disease (COPD); however, neither the test-retest reliability nor the physiological qualities of this test have been reported. We therefore, assessed test-retest reliability of the SRAT and the physiological characteristics associated with the test in patients with COPD. 11 COPD patients (mean FEV1 43% predicted) performed a cardiopulmonary exercise test (CPET) on Day 1, and an SRAT and a 30-second Wingate anaerobic test (WAT) on each of Days 2 and 3.
The SRAT showed a high degree of test-retest reliability (ICC=0.99; CV=3.8%, and bias 4.5 W, error −15.3–24.4 W). Power output on the SRAT was 157 W compared to 66 W on the CPET and 231 W on the WAT. Despite the differences in workload, patients exhibited similar metabolic and ventilatory responses between the three tests. Measures of ventilatory constraint correlated more strongly with the CPET than the WAT; however, physiological variables correlated more strongly with the WAT.
The SRAT is a highly reliable test that better reflects physiological performance on a WAT power test despite a similar level of ventilatory constraint compared to CPET. |
| format | Article |
| id | doaj-art-d94a47d8f4c9459d96c8ad1e7acba828 |
| institution | Kabale University |
| issn | 2090-1836 2090-1844 |
| language | English |
| publishDate | 2012-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Pulmonary Medicine |
| spelling | doaj-art-d94a47d8f4c9459d96c8ad1e7acba8282025-02-03T05:49:31ZengWileyPulmonary Medicine2090-18362090-18442012-01-01201210.1155/2012/653831653831Test-Retest Reliability and Physiological Responses Associated with the Steep Ramp Anaerobic Test in Patients with COPDRobyn L. Chura0Darcy D. Marciniuk1Ron Clemens2Scotty J. Butcher3School of Physical Therapy, University of Saskatchewan, 1121 College Dr, Saskatoon, SK, S7N 0W3, CanadaRespirology, Critical Care and Sleep Medicine, University of Saskatchewan, CanadaRespirology, Critical Care and Sleep Medicine, University of Saskatchewan, CanadaSchool of Physical Therapy, University of Saskatchewan, 1121 College Dr, Saskatoon, SK, S7N 0W3, CanadaThe Steep Ramp Anaerobic Test (SRAT) was developed as a clinical test of anaerobic leg muscle function for use in determining anaerobic power and in prescribing high-intensity interval exercise in patients with chronic heart failure and Chronic Obstructive Pulmonary Disease (COPD); however, neither the test-retest reliability nor the physiological qualities of this test have been reported. We therefore, assessed test-retest reliability of the SRAT and the physiological characteristics associated with the test in patients with COPD. 11 COPD patients (mean FEV1 43% predicted) performed a cardiopulmonary exercise test (CPET) on Day 1, and an SRAT and a 30-second Wingate anaerobic test (WAT) on each of Days 2 and 3. The SRAT showed a high degree of test-retest reliability (ICC=0.99; CV=3.8%, and bias 4.5 W, error −15.3–24.4 W). Power output on the SRAT was 157 W compared to 66 W on the CPET and 231 W on the WAT. Despite the differences in workload, patients exhibited similar metabolic and ventilatory responses between the three tests. Measures of ventilatory constraint correlated more strongly with the CPET than the WAT; however, physiological variables correlated more strongly with the WAT. The SRAT is a highly reliable test that better reflects physiological performance on a WAT power test despite a similar level of ventilatory constraint compared to CPET.http://dx.doi.org/10.1155/2012/653831 |
| spellingShingle | Robyn L. Chura Darcy D. Marciniuk Ron Clemens Scotty J. Butcher Test-Retest Reliability and Physiological Responses Associated with the Steep Ramp Anaerobic Test in Patients with COPD Pulmonary Medicine |
| title | Test-Retest Reliability and Physiological Responses Associated with the Steep Ramp Anaerobic Test in Patients with COPD |
| title_full | Test-Retest Reliability and Physiological Responses Associated with the Steep Ramp Anaerobic Test in Patients with COPD |
| title_fullStr | Test-Retest Reliability and Physiological Responses Associated with the Steep Ramp Anaerobic Test in Patients with COPD |
| title_full_unstemmed | Test-Retest Reliability and Physiological Responses Associated with the Steep Ramp Anaerobic Test in Patients with COPD |
| title_short | Test-Retest Reliability and Physiological Responses Associated with the Steep Ramp Anaerobic Test in Patients with COPD |
| title_sort | test retest reliability and physiological responses associated with the steep ramp anaerobic test in patients with copd |
| url | http://dx.doi.org/10.1155/2012/653831 |
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