During the game, press TAB and type

"set plyr.ds9_siskoeva jumpz 1000"

OR

"set plyr.ds9_sisko jumpz 1000"

depending on which level you are on. This cheat code varies depending on the level being played (sometimes the "eva" suffix is required, sometimes it isn't), but if you try them both, one is sure to work on any given level.

One final note on Health/Jump increase cheats: they are dependant on which character you are using. The above assumes you are using Sisko but if you are using Kira or Worf you must replace "sisko" with "kira" or "worf" in the "set plyr.ds9_sisko" line.