Validity and reliability of two submaximal tests for estimating maximal oxygen consumption in adults
Objective: Verify the reliability and validity of two submaximal tests – walking-running test (WRT) and self-selected intensity test (SSIT) – to predict V̇O2MAX in healthy adults. Methodology: A total of 20 adults of both sexes were evaluated in three visits. The WRT was initially performed at a...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
FEADEF
2025-06-01
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| Series: | Retos: Nuevas Tendencias en Educación Física, Deportes y Recreación |
| Subjects: | |
| Online Access: | https://revistaretos.org/index.php/retos/article/view/108833 |
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| Summary: | Objective: Verify the reliability and validity of two submaximal tests – walking-running test (WRT) and self-selected intensity test (SSIT) – to predict V̇O2MAX in healthy adults.
Methodology: A total of 20 adults of both sexes were evaluated in three visits. The WRT was initially performed at a speed of 5 km‧h-1 and 4% grade. The grade was increased by 2% until 12%. The speed was increased to 9 km‧h-1 and the grade reduced to 1% if subjects did not reach 65% of the heart rate reserve (HRRES). Once HRRES was attained, the effort was maintained for 6 minutes. The SSIT consisted in 4 minutes of free intensity selection (speed and/or grade) and 6 minutes for HR monitoring. The Student’s t-test, ICC and typical error were used to test reliability. ANOVA and a graphical Bland-Altman analysis were used for validity. Only speed was different in WRT between test-retest.
Results: The main results achieved in the research should be commented on.
Discussion: Differences were found between the measured V̇O2MAX (49.5 ± 7.9 mL·kg-1·min-1) and predicted V̇O2MAX in WRT (43.2 ± 7.6 mL·kg-1·min-1) and SSIT (40.6 ± 9.8 mL·kg-1·min-1).
Conclusions: The two tests proved to be reproducible, especially for the WRT; however, both may present an underestimation of V̇O2MAX.
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| ISSN: | 1579-1726 1988-2041 |