AI Article Synopsis
- The study compared peak oxygen uptake (V̇O2peak), peak heart rate (HRpeak), and peak O2 pulse in hand-cyclists with spinal cord injury during two different tests on the same day.
- Eight competitive hand-cyclists performed a maximal incremental test and a verification test at 100% V̇O2peak speed, finding that V̇O2peak was significantly higher in the verification test.
- Despite similar HRpeak values in both tests, the verification test showed a higher peak O2 pulse, indicating its importance for accurately measuring V̇O2peak in this population.
Article Abstract
The present study aimed to compare peak oxygen uptake (V̇Opeak), peak heart rate (HRpeak), and peak Opulse during an incremental and a verification test performed on the same day in hand-cyclists with spinal cord injury (SCI). Eight competitive SCI hand-cyclists (age: 23 ± 2.7 years; V̇Opeak: 36.3 ± 14.0 mL.kg.min) performed a maximal incremental handcycling test and a verification test to exhaustion at 100% of the peak speed on an oversized treadmill. The V̇Opeak, HRpeak, and peak Opulse (i.e., VO/HR) were compared between incremental and verification tests. Absolute and relative V̇Opeak obtained in the verification test (2.51 ± 0.96 L.min; 36.3 ± 14.0 mL.kg.min) were significantly higher than values obtained in the incremental test (2.24 ± 0.79 L.min; 33.5 ± 12.9 mL.kg.min; < 0.05). The mean differences (95% CL) of absolute and relative V̇Opeak between tests were 8.2% (3.3%-13.2%) and 10.9% (4.3%-18.1%), respectively. There was no difference in HR peak (incremental: 169 ± 24 bpm; verification 167 ± 25 bpm; = 0.130). Peak Opulse from the verification test (14.6 ± 4.7 mL.beat) was higher than incremental test (13.0 ± 3.8 mL.beat; = 0.007). In conclusion, the verification test elicited greater V̇Opeak and Opulse than a two-phase incremental test despite the similar HRpeak. This indicates that for this progressive protocol lasting ≥25 min, the verification phase adds value to determining V̇Opeak in SCI athletes.
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| http://dx.doi.org/10.1139/apnm-2024-0193 | DOI Listing |
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