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Assessment framework
Wheelchair basketball classification uses three stages: isolated functional testing, combined measures, and observation of players’ volume of action. The study focused on VoA-capacity, measured under controlled conditions, while distinguishing it from VoA-performance observed during games. Researchers examined whether trunk and hip strength could help explain controlled seated movement capacity and sport-class allocation.
Measurements and participants
The observational study included 40 officially classified players across sport classes 1.0 to 4.5. Examiners assessed trunk and hip strength with the Manual Muscle Test. VoA-capacity was calculated from maximal trunk reaches in six directions: flexion, extension, bilateral rotation, and bilateral lateral flexion. An inertial measurement unit positioned at the seventh cervical vertebra recorded these movements.
Findings and implications
Combined trunk-hip strength explained 80% of the variance in VoA-capacity, while trunk and hip strength were each significantly associated with that measure. VoA-capacity also significantly predicted sport class, and both movement capacity and total strength differed between classes. The largest contrasts were between classes 1.0–2.0 and 4.0–4.5. Because strength is not itself a classification criterion, the authors describe profiling as complementary evidence, calling for future work incorporating game-based VoA-performance.
