Сomparative analysis of biomechanical, space-time parameters of the classical variant (grab-start) and the track and field version (track start) in swimming at the initial training stage

it is known that in sports swimming, different variants of the starting jump in swimming have been in the spotlight of specialists, coaches, and athletes for many years, since a well-executed start plays a key role in swimming the distance, especially at sprint distances. Over the past two decades, the starting jump in swimming has been repeatedly changed in technique. However, today, among highly qualified athletes, the track and field version of the starting jump (track start) is mainly used. However, the classical version (grab start) prevails in the initial training of young swimmers. In this regard, the article analyzes two variants of the starting jump (classic grab start, track and field track start). Biomechanical features were recorded when performing two start options (classic grab start, track and field track start) in children aged 7-9 years. The age-related dynamics of the kinematic parameters of the stratum in athletes at the initial stage has been revealed. It is interesting that with the help of a strain gauge platform with a pad, it became possible to register the support reaction of repulsion from behind a standing leg, but when performing a track start (track start), novice swimmers are able to perform an ineffective, but already two-support start of repulsion (with a foot standing behind on the pad and a foot standing in front with a grip on the front of the bedside table), which indicates the prospect of forming this starting option already in the initial training groups. The kinematic parameters were analyzed using the kinovea software.

grab-start, track-start, biomechanical parameters, phase structure