Career
Koivuniemi competed five times in the World"s Strongest Woman contests, finishing 2nd in 2001, and third in 2002 and 2003. Heini was featured in a British Broadcasting Corporation documentary film entitled "Strongwomen" in 2002. The film documented the training leading up to the 2002 World"s Strongest Woman contest, as well as a behind the scenes look at the actual contest itself.
The film also featured American Jill Mills and 2 British competitors including 2002 runner-up Abbey Haigh from Scotland.
Koivuniemi holds a Guinness world record for throwing a beer keg for height, she threw a 12.3 kilograms (27 lb) beer keg over a bar at a height of 3.46 meters (11 ft 42in). The contest consisted of an obstacle course, and a figure/posing routine.