ArticleSpinal cord2026
The infinity test: a novel 3-minute all-out wheelchair field test for estimating VO₂peak in individuals with paraplegia.
Article in Spinal cord, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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6 authors.
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Abstract
STUDY
designMethodological cross-sectional validation study with external validation.
objectivesTo develop and externally validate the Infinity Test, a 3-min all-out field protocol performed in the participant's own wheelchair with enforced synchronous propulsion, designed to estimate peak oxygen uptake (VO₂peak) in manual wheelchair users with chronic paraplegia.
settingEnvironmental, Occupational, Aging (Integrative) Physiology Laboratory, Haute École Bruxelles-Brabant (HE2B), Brussels, Belgium.
methodsSeventeen manual wheelchair users with chronic paraplegia completed both the Infinity Test and a laboratory arm-crank graded exercise test in counterbalanced order (development cohort). An independent cohort of 11 participants completed the Infinity Test only (external validation cohort). Breath-by-breath VO₂ was measured using a validated portable metabolimeter. Laps·min
resultsInfinity Test VO₂peak∞ did not differ from laboratory VO₂peakErgo (mean bias + 25 mL·min
conclusionThe Infinity Test provides a feasible and ecologically valid field protocol for estimating VO₂peak in individuals with paraplegia. Its combination of predictive accuracy, operational simplicity, and use of personal wheelchairs, together with an open-source digital toolkit (interactive nomogram and automated clinical reporting), may support its integration into rehabilitation, high-performance, and community-based practice.
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