How Is Jump Performance Affected in Male Athletes when Completed with a Visual Impairment?

SIGNIFICANCE High-, long-, and triple-jump athletic events may need to consider whether it is appropriate group vision-impaired athletes in the same classification with loss of different visual functions, a greater emphasis be placed on field (VF) within current system used. PURPOSE Athletes vision impairment are grouped, based their function, into one three classes (B1, B2, B3, B1 being most severe). class B2 have acuity (VA; range, 1.50 2.60 logMAR) or VF (constricted diameter <10°). The study investigated how function (VA VF) impacts jumping performance, fundamental component triple-, high-jump events. METHODS Ten subelite male (age, 21.6 ± 0.96 years; height, 178.8 2.97 cm; mass, 82.2 10.58 kg) normal who participate athletics were recruited. Participants completed drop jumps four conditions: habitual condition (Full), VA no better than 1.60 logMAR (B2-VA), restricted <10° (B2-VF), 1.30 (B3-VA). RESULTS Meaningful differences observed between Full B2-VF conditions. After rebound, vertical velocity at take-off was highest (2.84 0.35 m · s?1; 95% confidence interval [CI], 2.68 2.99 s?1) lowest (20% reduction; 2.32 0.29 CI, 2.16 2.48 s?1). Peak jump height (0.42 0.10 m; 0.38 0.46 m) reduced by 40% (0.28 0.07 0.24 0.32 m). Minimal found B2-VA, B3-VA CONCLUSIONS Jump performance compromised simulated impairment. However, decrements seem specific those severely constricted VF. Those (in B2-VA classes) produce comparable vision.