Flic flac gymnastics trial#

The variables are time, body CM velocity, joint angles and velocities, force and impulse. An independent t-test was used to test the variables between the gymnasts and cheerleaders on back handspring. The ground reaction forces and impulses of back handspring were analyzed by Kwon GRF software. The segment COM, and body COM were calculated by using the Dempster data provided by Winter (l990). The second central different differentiation method was used to determine velocities. Nine body landmarks (ear, shoulder, elbow, wrist, hip, knee, ankle, toe and heel) were digitized by the Kwon3d motion system (Based on a frequency content analysis of the digitized coordinate data, marker trajectories were filtered at 6 Hz using a Butterworth fourth order zero-lag filter.

Flic flac gymnastics trial#

The subject performed three successful trials and one trial was selected for analysis based on best judging score. For each trial, the subjects were instructed to initially stand on a force platform and did a back handspring once given a verbal signal. A JVC 9800 DV camera (60 Hz) was synchronized by using a LED light with a Kistler force platform (600 Hz) to collect the data of subject performing the back handspring. The subjects performed a 10-mimute warm-up session consisting of stretching upper and lower limb muscles before data collection. All subjects were informed of the experimental procedures and gave their consent before participating. METHODS: Eight gymnasts (height 167.9 ± 4.2 cm, age 21.9 ± 1.9 yrs, mass 65 ± 3.6 kg) and eight cheerleaders (height 174.4 ± 4.2 cm, age 19.8 ± 3.7 yrs, mass 75.3 ± 11.7 kg) participated in this study. This purpose of this study is to compare the biomechanics of back handspring between skilled gymnasts with 12 years experience and unskilled cheerleaders with one year experience. There is a need to determine the difference in the biomechanics of performance of back handspring in skilled and unskilled performers.

Until now, no detailed biomechanical analysis of back handspring has been reported. The back handspring also frequently performed in cheerleading. The back handspring is one of the important skills in floor exercise and is a basic building block for many gymnastic routines (Payne and Barker, 1976). The athletes have to master the floor exercise before advance to other instrument events. The floor exercise is the foundation for learning the basic gymnastics movement including jumping, turning, rolling, and flipping. INTRODUCTION: The gymnastics is an official event in the first modern Olympics Games in 1896. KEY WORDS: performance, take-off, kinematics, kinetics. It suggests that the greater jump height and longer flight time are required for good handspring performance. The results indicated the peak vertical GRF before take-off for gymnasts and cheerleaders are 2.3 BW and 2.19 BW and the peak horizontal GRF before take-off are 0.67 BW and 0.53 BW respectively the gymnasts have greater jump height, take-off center of mass (CM) velocity, horizontal CM velocity at hand push off, hip angle at take-off and longer first phase flight time than the cheerleaders.

A JVC 9800 DV camera (60 Hz) was synchronized by using a LED light with a Kistler force platform (600 Hz) to collect the data. Eight gymnasts and eight cheerleaders participted in the study. We rely on volunteers to keep the club running and we are currently looking for new parents to join the committee.The purpose of this study is to compare the kinematics and kinetics of back handspring of skilled and non-skilled performers. This would involve spending a term assisting in class administration or undertaking an annual administration activity, and all that is required is enthusiasm and the willingness to give a little time, no experience or prior knowledge is necessary. In order to continue it's success, it is expected that parents and guardians comply with our procedures and help in the running of the club. The club is run by a committee of volunteer parents and guardians which meets termly. Parental Involvement and the Flic Flac Committee