▁this ▁is ▁often ▁done ▁on ▁site ▁at ▁a ▁sports ▁training ▁facility ▁or ▁competition . ▁ ▁The ▁second ▁stage ▁is ▁observation ▁in ▁practice , ▁the ▁third ▁stage ▁is ▁observation ▁in ▁competition ▁and ▁the ▁last ▁stage ▁is ▁assigning ▁the ▁sport sp erson ▁to ▁a ▁relevant ▁class . ▁Sometimes ▁the ▁health ▁exam ination ▁may ▁not ▁be ▁done ▁on ▁site ▁because ▁the ▁nature ▁of ▁the ▁am putation ▁could ▁cause ▁not ▁phys ically ▁visible ▁alter ations ▁to ▁the ▁body . ▁ ▁During ▁the ▁training ▁portion ▁of ▁classification , ▁observation ▁may ▁include ▁being ▁asked ▁to ▁demonstrate ▁their ▁skills ▁in ▁athlet ics , ▁such ▁as ▁running , ▁jump ing ▁or ▁throwing . ▁A ▁determ ination ▁is ▁then ▁made ▁as ▁to ▁what ▁classification ▁an ▁ath lete ▁should ▁comp ete ▁in . ▁Class ifications ▁may ▁be ▁Conf ir med ▁or ▁Review ▁status . ▁For ▁athlet es ▁who ▁do ▁not ▁have ▁access ▁to ▁a ▁full ▁classification ▁panel , ▁Pro vis ional ▁classification ▁is ▁available ; ▁this ▁is ▁a ▁temporary ▁Review ▁classification , ▁considered ▁an ▁indic ation ▁of ▁class ▁only , ▁and ▁generally ▁used ▁only ▁in ▁lower ▁levels ▁of ▁competition . ▁ ▁Compet itors ▁Notable ▁run ners ▁in ▁this ▁class ▁include ▁Y oh ans son ▁N asc imento ▁( B RA ), ▁who ▁holds ▁T 4 5 ▁world ▁records ▁at ▁ 1 0 0 m , ▁ 2 0 0 m ▁and ▁ 4 0 0 m ▁distances . ▁ 2 0 1 2 ▁Par al ym pic ▁medal ists ▁Z ha o ▁X u ▁( CH N ) ▁and ▁Sam k elo ▁R