is a Japanese retired sprinter. She competed in the 4 × 100 metres relay at the 1997 World Championships, the 100 metres and 4 × 100 metres relay at the 1999 World Championships and the 4 × 100 metres relay at the 2003 World Championships. She was a seven-time national champion in the 100 metres and a six-time national champion in the 200 metres at the Japanese Championships. She is the former Japanese record holder in the 100 metres and 200 metres, and the current Japanese record holder in the indoor 200 metres.
She married Japanese sprinter Shigeyuki Kojima in February 2004. She changed her name to Motoka Kojima, but she reverted to her original name.
Personal bests EventTime (s)CompetitionVenueDateNotes60 m7.54 (Indoor)World Indoor ChampionshipsMaebashi, Japan7 March 1999100 m11.39 (wind: +1.1 m/s)National ChampionshipsTottori, Japan4 June 200411.31 (wind: +3.7 m/s)National ChampionshipsTokyo, Japan9 June 2001Wind-assisted200 m23.46 (wind: 0.0 m/s)National Sports FestivalKumamoto, Japan26 October 1999Former NR23.22 (wind: +2.2 m/s)National ChampionshipsShizuoka, Japan3 October 1999Wind-assisted24.11 (Indoor)Japan-China Indoor MatchYokohama, Japan26 February 2000Current NIR
International competition YearCompetitionVenuePositionEventTimeRepresenting 1997East Asian GamesBusan, South Korea3rd200 m24.09 (wind: +3.4 m/s)2nd4×100 m relay45.16 (relay leg: 4th)2nd4×400 m relay3:36.60 (relay leg: 2nd)World ChampionshipsAthens, Greece15th (sf)4×100 m relay44.56 (relay leg: 4th)1998Asian ChampionshipsFukuoka, Japan4th100 m11.74 (wind: -0.1 m/s)5th200 m23.67 (wind: +1.7 m/s)2nd4×100 m relay44.45 (relay leg: 4th)Asian GamesBangkok, Thailand5th100 m11.59 (wind: +2.3 m/s)6th200 m23.58 (wind: +0.1 m/s)5th4×100 m relay44.80 (relay leg: 2nd)1999World Indoor ChampionshipsMaebashi, Japan26th (h)60 m7.54 (h)200 mWorld ChampionshipsSeville, Spain37th (h)100 m11.64 (wind: -0.6 m/s)14th (h)4×100 m relay44.80 (relay leg: 2nd)2000Asian ChampionshipsJakarta, Indonesia7th100 m11.78 (wind: -1.0 m/s)5th4×100 m relay45.26 (relay leg: 2nd)2001East Asian GamesOsaka, Japan4th200 m23.69 (wind: -2.4 m/s)2nd4×100 m relay44.24 (relay leg: 2nd)2002Asian GamesBusan, South Korea9th (h)100 m11.70 (wind: -0.2 m/s)6th200 m23.91 (wind: -0.2 m/s)4th4×100 m relay44.59 (relay leg: 2nd)2003World ChampionshipsParis, France15th (h)4×100 m relay44.57 (relay leg: 4th)Asian ChampionshipsManila, Philippines2nd4×100 m relay44.56 (relay leg: 1st)
National titles Japanese Championships 100 m: 1998, 1999, 2000, 2001, 2002, 2003, 2004 200 m: 1998, 1999, 2000, 2001, 2002, 2003
References
External links
Motoka Arai at JAAF (archived)