| Rank | Event | Year | Location | Result |
| Olympic Games | ||||
| 1 | 4 x 100m Freestyle Relay | 2008 | Beijing, CHN | 3:33.76 |
| 3 | 4 x 100m Freestyle Relay | 2004 | Athens, GRE | 3:37.59 |
| 8 | 100m Butterfly | 2008 | Beijing, CHN | 58.54 |
| Heats | 100m Freestyle | 2008 | Beijing, CHN | 55.23 |
| Heats | 4 x 100m Medley Relay | 2008 | Beijing, CHN | 4:04.74 |
| World Championships | ||||
| 1 | 50m Butterfly | 2011 | Shanghai, CHN | 25.71 |
| 1 | 4 x 100m Freestyle Relay | 2011 | Shanghai, CHN | 3:33.96 |
| 1 | 4 x 100m Freestyle Relay | 2009 | Rome, ITA | 3:31.72 |
| 3 | 50m Butterfly | 2007 | Melbourne, VIC, AUS | 26.11 |
| 3 | 4 x 100m Freestyle Relay | 2007 | Melbourne, VIC, AUS | 3:36.81 |
| 5 | 4 x 100m Medley Relay | 2009 | Rome, ITA | 3:57.31 |
| Semifinal | 100m Butterfly | 2011 | Shanghai, CHN | 58.70 |
| Semifinal | 200m Freestyle | 2009 | Rome, ITA | 1:57.00 |
| Heats | 4 x 100m Medley Relay | 2011 | Shanghai, CHN | 4:03.20 |
| Heats | 4 x 200m Freestyle Relay | 2009 | Rome, ITA | 7:53.84 |
| World Championships Short Course | ||||
| 1 | 4 x 100m Freestyle Relay | 2010 | Dubai, UAE | 3:28.54 |
| 5 | 50m Butterfly | 2010 | Dubai, UAE | 25.48 |
| 8 | 100m Butterfly | 2010 | Dubai, UAE | 57.46 |
Nickname
Inge The Second or The Other Inge, in reference to fellow Dutch swimmer Inge de Bruijn. (zwemkroniek.com, 23 Feb 2007)
Hobbies
Listening to music, shopping and reading. (Athlete, 26 Feb 2007)
Education
Psychology - Erasmus University, Rotterdam, NED
Family
Partner Bas Looman
Language(s) spoken
English
Club name
CN Marseille, Marseille, FRA
Coach
Romain Barnier, James Gibson (ingedekker.com, 26 Jan 2012)
Other sports
Her younger sister Lia also competes for the Netherlands in swimming. (liadekker.com, 09 Dec 2010)
Debut
2001 for Netherlands, European Short Course Championships (Belgium) (zwemkroniek.com, 17 Jun 2005)
Injuries
In November 2011 she suffered a stress fracture in her heel. (omroepbrabant.nl, 22 Nov 2011)
Additional information
Start of sporting career
She began swimming at the age of six. (Athlete, 26 Feb 2007)
Reason for taking up this sport
She started the sport to make some friends and have fun. (Athlete, 26 Feb 2007)
Most influential person in career
Her former coach Mark Lie a Kwie, because he told her she was good enough to be a champion but needed to really want it and train hard. (Athlete, 26 Feb 2007)
Superstitions / Rituals
She always tries to step up on to the starting blocks from the right side and likes to keep wearing 'lucky' suits if she wins in them. (Athlete, 26 Feb 2007)
Previous Olympics
Beijing 2008, Athens 2004
