Analysis of the Influence of Age Stages on Static Plantar Pressure Indicators for Karate Do Practitioners (Preliminary Report)

The investigation aims at static examination and determination of differences for three age groups: under 13, 13–15 years old over 15, all practitioners the martial art karate do. This occured level main parameters, measured using FreeMed baropodometric platform Free Step software by Sensor Medica: plantar surface areas, location pressure center (C) inside support polygon, imbalances noticed Pmax value, weight distribution on each foot rearfoot forefoot misalignments centers foot, etc. Results: subjects 13 had highest number cases related to off-centered positioning (C); groups those 15 located in most left retropodal part, between have a dominant leg, right part. numbers normal bilateral leg are group years, other higher incidence various imbalances. analysis variance (F) identified only two situations which independent variable, “age stages,” significantly influences resulting non-dominant foot: forefoot_left_surface total_left_surface. data right/left pairs within batch generate insignificant values |Z| cases, with superiority parameters first groups, but case old, some results atypical, average left/non-dominant following cases: total_left_Pmax, total_left_Pavg, rearfoot_left_load_percent, rearfoot_left_weight_ratio_percent. comparison batches (between areas) generated significant area surfaces. older subjects, more obvious load area, is similar arts studies analyzed here, determined long use as base, during kicks one.