International Society of Biomechanics in Sports (ISBS)
Abstract
Both the triple backward somersault in tuck position (TBS) and the double backward somersault in layout position (DBS) are considered the most difficult dismounts on the high bar. Although similarities and differences between TBS and DBS would be expected, they cannot be conclusive until relative data are compared. It would be beneficial for gymnasts and coaches to recognize the differences between TBS and DBS for performing both skills perfectly. The purpose of this study, therefore, was to investigate the differences between variables of the TBS and DBS. Five TBS and five DBS recorded during the 1990 United States Gymnastics Federation Championships with a NAC 400 HSV camera operating at 200 Hz, were analyzed utilizing an Ariel Performance Analysis System (APAS). Two dimensional position data of 6 body points (ankle, knee, hip, shoulder, elbow, and hand) were digitally smoothed before being submitted to further analysis and kinematic and kinetic data were compared. Paired t tests (
