Double mini trampoline, sometimes referred to as double mini or DMT, is a gymnastics discipline within trampolining. Participants perform acrobatic skills on an apparatus smaller than a regular competition trampoline. The apparatus has both an angled section and a flat section. Unlike individual trampoline, where scoring is predominantly determined by execution, time of flight and difficulty, the difficulty in DMT plays a more prominent role in the final score.

A DMT routine or pass consist of two phases. The first phase is called a "mount"; during this phase the athlete jumps onto the angled part and flips off of it onto the flat part. The first phase can also be performed by jumping, without flips or twist, onto the flat part and then commencing the first flip or twist. In this case the first phase is called a "spotter". The second phase starts on the flat part and is called a "dismount"; the athlete lands the first flipping sequences from phase one and immediately launches into a second series of flips and twists before landing on a mat.

The athletes are judged on difficulty and execution. Competitions may take place in teams or individually.

DMT is governed by the FIG, the International Federation of Gymnastics, and is included as an event within Trampoline Gymnastics. Although not an Olympic event yet, Elite DMT athletes compete at an international level and can compete in various events organised by the FIG as well as at the World Games.

History DMT can be sourced back to 1970 when its inventors Robert F Bollinger and George Nissen combined two mini trampolines with a small table and mat to cover in between. Later Robert F Bollinger combined the two mini trampolines to create one 430 cm long Double Mini Trampoline and also designed the rules for competition and terms such as the mounter and spotter passes and he established its own difficulty system roughly based on the system used for diving. Robert F Bollinger was part of George Nissen's trampoline act and just as Nissen can be seen as the father of trampoline, Robert F Bollinger can be seen as the father of Double Mini Trampoline. The first record of a double mini competition comes from the Trampoline Gymnastics World Age Group Competitions in 1973 held in London, England. Athletes competing had little experience in the new apparatus and Robert F Bollinger jumped in and provided personal training on the Friday afternoon for the athletes wishing to compete the following day. Double mini was first introduced into the Trampoline World Championships, only six years after its invention, in the 1976, 9th Trampoline World Championships in Tulsa.

The DMT as we see it today is wider than the one Robert F Bollinger and George Nissen first created, and the change came mid 1990 when Horst Kunze, then President of the FIG Trampoline Technical Committee, asked Eurotramp Trampoline company if they could produce a DMT with a wider frame. This resulted in a wider DMT with a bed of 92 cm, which Horst Kunze states gave a real boost to the discipline. Since then this has been the international standard.

Skills Some common skills performed at international level competitions are: A Comprehensive list of skills can be found in FIG Code of Point Difficulty.

Full-In Full-Out Also known as Double-Twisting Double Back

FIG Code 822

A somersault commonly used as a dismount in which the athlete takes off traveling backwards and does a double somersault with a double twist, full twist in the first somersault and full twist in the second somersault. This skill can be performed either tucked, piked or straight.

Triple Back Somersault FIG Code 12---

A somersault commonly used as a dismount in which the athlete takes off traveling backwards and does a triple somersault. This skill can be performed either tucked, piked or, uncommonly, straight.

Miller Also known as Full in Double-Full Out or Triple-Twisting Double back

FIG Code 833

A somersault used as a dismount in which the athlete takes off traveling backwards and does a double somersault with a triple twist. This skill is named after world champion Wayne Miller (USA). This skill can be performed ether tucked, piked or straight.

Full-In Half-Out Also known as Full-Half, Full-In Barani-Out or Full-Barani

FIG Code 821

A somersault commonly used as a mount in which the athlete takes off traveling forwards and does a double somersault with a one and a half twist, full twist in the first somersault and half twist in the second somersault. This skill can be performed ether tucked, piked or straight.

Fliffis Also known as Half-Out

FIG Code 8-1

A somersault commonly used as a mount in which the athlete takes off traveling forwards and does a double somersault with a half twist, no twist in the first somersault and half twist in the second somersault. This skill can be performed ether tucked, piked or straight.

Triffis Also known as Half-out Triffis or 'TriffFIG Code 12--1

A somersault commonly used as a mount in which the athlete takes off traveling forwards and does a triple somersault with a half twist, no twist in the first two somersaults and a half twist in the third somersault. This skill can be performed either tucked or piked.

FIG Code of Point Difficulty The difficulty in double mini is based upon a bonus system, where the number of rotation and twists are multiplied and then the position is added. The positions are tuck, pike and straight which are represented by "O" for Tuck, "<" for Pike and "/" for Straight

The FIG numeric system works as follows, first number is the amount of 1/4-rotations second number is the amount of 1/2-twist, the twists are divided into where in the skill they occur.

Example: Full-In Half-Out (8 2 1) has a total of 8 1/4-rotations corresponding to the first 8 then it has 2 1/2-twists in the first somersault corresponding to the 2 and 1 1/2-twists the second somersault corresponding to the 1'

FIG World Championship results Men's Individual 1976 Tulsa 26.300 26.000 25.200 1978 Newcastle 25.900 25.900 24.700 1980 Brig 25.200 23.600 23.300 1982 Bozeman 26.800 26.100 25.800 1984 Osaka 26.200 25.300 25.000 1986 Paris 26.400 25.900 25.700 1988 Birmingham 27.500 27.000 26.600 1990 Essen 28.900 28.000 27.600 1992 Auckland 28.670 28.530 28.400 1994 Porto 12.130 11.900 11.800 1996 Vancouver 23.800 23.800 23.440 1998 Sydney 24.800 24.130 23.200 1999 Sun City 25.000 24.530 24.330 2001 Odense 63.900 63.700 63.600 2003 Hannover 64.500 64.400 63.900 2005 Eindhoven 75.100 73.400 73.100 2007 Quebec City 78.000 73.600 71.600 2009 St Petersburg 75.500 69.600 69.300 2010 Metz 73.400 73.000 72.700 2011 Birmingham 70.200 69.700 68.700 2013 Sofia 77.800 73.200 69.200 2014 Daytona Beach 78.100 77.500 74.500 2015 Odense 79.600 78.400 74.800 2017 Sofia 78.800 78.300 76.900 2018 St Petersburg 78.200 73.500 72.400 2019 Tokyo 77.100 76.100 74.100 2021 Baku 77.400 75.100 74.900 2022 Sofia 30.200 29.200 29.100 2023 Birmingham 30.600 29.300 23.600 2025 Pamplona 31.300 29.200 28.800

Result are correct according to FIG's database as well as official records from the competition

Women's Individual 1976 Tulsa 24.800 24.100 20.300 1978 Newcastle 22.900 21.800 21.400 1980 Brig 22.100 22.000 20.700 1982 Bozeman 24.300 24.100 23.700 1984 Osaka 23.500 23.300 & 22.600 1986 Paris 24.000 23.400 23.000 1988 Birmingham 24.100 23.600 22.800 1990 Essen 24.600 24.500 24.500 1992 Auckland 26.270 25.100 24.200 1994 Porto 11.100 11.030 10.800 1996 Vancouver 21.730 21.480 20.690 1998 Sydney 21.860 21.400 21.270 1999 Sun City 22.400 21.470 21.270 2001 Odense 62.200 61.800 61.100 2003 Hannover 62.200 61.800 61.600 2005 Eindhoven 65.700 65.000 64.700 2007 Quebec City 70.900 69.700 68.800 2009 St Petersburg 68.300 68.000 67.100 2010 Metz 70.500 70.300 70.200 2011 Birmingham 70.200 69.700 68.700 2013 Sofia 71.100 70.000 68.600 2014 Daytona Beach 71.400 70.300 66.000 2015 Odense 71.100 69.800 67.900 2017 Sofia 68.900 67.800 67.200 2018 St Petersburg 72.100 70.000 67.700 2019 Tokyo 69.000 68.800 68.200 2021 Baku 70.900 70.000 69.600 2022 Sofia 24.900 24.800 24.000 2023 Birmingham 26.300 26.200 26.100 2025 Pamplona 26.700 26.400 26.100

**Bianca Budler and Bianca Zoonekynd is the same person

Result are correct according to FIG's database as well as official records from the competition

References