What is the consequence of using supplementary mats during a routine?

Using supplementary mats during a routine results in a general deduction because they are not considered standard equipment for the execution of a skill in gymnastics competitions. While supplementary mats may enhance safety, their presence indicates that the gymnast is either unable to perform a skill consistently or safely without them. Consequently, judges account for this by applying a deduction as it may interfere with the artistry and technical execution of the routine as initially planned.

This deduction reflects the adherence to the principles of gymnastics competition, where routines are expected to be performed with the established apparatus in optimal conditions. Thus, the presence of supplementary mats leads judges to consider this aspect in their scoring, impacting the overall evaluation of the routine.