thumb|right|350px|[[Jade Barbosa performing on floor at the 2016 Summer Olympics]]
In gymnastics, the floor is a specially prepared exercise surface, considered an apparatus. The floor exercise (English abbreviation FX) is the event performed on the floor, in both women's and men's artistic gymnastics (WAG and MAG). The same floor is used for WAG FX and MAG FX, but rules and scoring differ; most obviously, a WAG FX routine is synchronised to a piece of recorded dance music, whereas MAG FX has no musical accompaniment.
A spring floor is used in all gymnastics to provide more bounce and help prevent potential injuries to gymnasts' lower extremity joints due to the nature of the apparatus, which includes the repeated pounding required to train it. Cheerleading also uses spring floors for practice. The sprung floor used for indoor athletics is designed to reduce bounce.
The apparatus
The apparatus originated as a 'free exercise' for men, very similar to the floor exercise of today. Most competitive gymnastics floors are spring floors. They contain springs and/or a rubber foam and plywood combination, which make the floor bouncy, soften the impact of landings, and enable the gymnast to gain height when tumbling. Floors have designated perimeters called the delimitation strip, indicating an out of bounds area.
Dimensions
Measurements of the apparatus are published by the Fédération Internationale de Gymnastique (FIG) in the Apparatus Norms brochure. The dimensions are the same for male and female competitors. The routine is choreographed in advance, and is composed of acrobatic and dance elements. Above all others, this event allows the gymnast to express their personality through their dance and musical style. The moves that are choreographed in the routine must be precise, in sync with the music, and entertaining. Dominic Zito (United States), and Geza Pozar (Romania, United States). Others opt to choreograph their FX routines in-house. Some gymnasts adopt a new FX yearly; others keep the same routine for several competitive seasons. It is not uncommon for coaches to modify a routine's composition between meets, especially if it is used for an extended length of time. It is uncommon for gymnasts to use multiple FX routines in the same season. However, it is not entirely unheard of; for instance, at the 1996 Summer Olympics in Atlanta, Russian Dina Kotchetkova's routine in the FX event finals had completely different music, choreography and composition than that of her all-around exercise.
The music used for the routine is also the choice of the gymnast and their coaches. It may be of any known musical style and played with any instrument(s), but it may not include spoken words or sung lyrics. D-score is a bonus added on to the overall score for the difficulty level of the routine. The D-score is calculated by adding values for the eight most difficult skills, connections, and compositional requirements.
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|+D-score Difficulty Values A loud beep will be sounded to alert gymnasts when they have 10 seconds left within the allocated time to finish their routine before receiving a penalty for exceeding the legal time allowed. Routines are typically made up of acrobatic elements combined with other elements that display the gymnast's strength and flexibility while using the entire floor area.
As with Women's Artistic Gymnastics, scores are based on difficulty, form, and overall performance quality, with the overall score being the addition of the D-score and the E-score.