Succi PJ, Benitez B, Kwak, M, Bergstrom, HC. VO2max is Reliably Measured from a Stand-Alone Graded Exercise Test in Healthy Women. JEPonline 2022;25(4):14-25. This study determined the necessity of a verification bout in measuring maximal oxygen uptake (VO2max) in healthy women. Ten women (22 ± 2 years) completed a familiarization trial and 2 treadmill graded exercise tests (GXT), each followed by 5 minutes of rest then a submaximal verification bout at 90% speed and 50% incline at termination of the GXT to determine V̇O2GXT and V̇O2verification (highest V̇O2 from each testing method). Analyses included a 2-way repeated-measures ANOVA, intra-class correlation coefficients (ICC2,1), standard errors of the measurement (SEM), minimal differences (MD), and coefficients of variation (CoV). There were significant test (test 1 [T1] vs. test 2 [T2]) x method (GXT vs. verification) interactions (P=0.019). Post-hoc comparisons indicated V̇O2GXTT1 (44.36 mL.kg-1.min-1) was greater than V̇O2verificationT1 ( 42.19 mL. kg-1. min-1) ( P=0.003), but there were no statistically significant differences between V̇O2GXTT1 and V̇O2GXTT2 (43.79 mL.kg-1.min-1) (P = 0.315), V̇O2GXTT2 and V̇O2verificationT2 (42.47 mL.kg-1.min-1) (P = 0.056) or V̇O2verificationT1 and V̇O2verificationT2 (P = 0.597). V̇O2GXT (ICC = 0.960, SEM = 1.20 mL.kg-1.min-1, MD = 3.32 mL.kg-1.min-1, CoV = 2.73%) and V̇O2verification (ICC = 0.941, SEM = 1.16 mL.kg-1 min-1, MD = 3.21 mL.kg-1.min-1, CoV = 2.75%) demonstrated excellent reliability. Based on the MD, one subject had differences for V̇O2GXT test-retest, and V̇O2verification test-retest. No subject demonstrated V̇O2verification above V̇O2GXT, and 2 subjects’ V̇O2GXT exceed V̇O2verification. The mean and individual differences between V̇O2GXT and V̇O2verification indicated that women achieved VO2max from a stand-alone GXT without the need for a verification bout.
|Number of pages||12|
|Journal||Journal of Exercise Physiology Online|
|State||Published - 2022|
Bibliographical noteFunding Information:
This study was supported by the University of Kentucky Department of Kinesiology and Health Promotion’s Student Research Award.
This study was supported by the University of Kentucky Department of Kinesiology and Health Promotion’s Student Research Award
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ASJC Scopus subject areas
- Physiology (medical)