<page_title> Athletics at the 2012 Summer Olympics – Men's 400 metres hurdles </page_title> <section_title> Heat 1 </section_title> <table> <cell> Kenneth Medwood <col_header> Athlete </col_header> </cell> <cell> 49.78 <col_header> Time </col_header> </cell> <cell> q <col_header> Notes </col_header> </cell> </table>
The slowest time qualifier was Kenneth Medwood in 49.78.