(1.Department of Physical Education,Jinan University,Guangzhou 510632,China;2.School of Physical Education,Guangzhou University,Guangzhou 510006,China) Abstract: By selecting 10 high performance male swimmers at Guangzhou University as their research subjects, and by using instruments and equipment such as force measurement board and high speed camcorder to synchro-nously acquire kinematical and dynamical parameter data, the authors compared and analyzed two relay takeoff techniques commonly used for relay swimming events, selected the arm swinging style takeoff technique more suitable for relay events to carried out 4-week relay takeoff training on 4 swimmers with better free style swimming performances in order to probe into the advantages and disadvantages of the two relay starting techniques and the effect of arm swinging style takeoff technique training on the relay start time, and revealed the following findings: compared with the platform griping style takeoff technique, the arm swinging style takeoff technique produced a bigger takeoff angle, a higher vertical velocity, a stronger takeoff acting force, and a smaller water entrance resis-tance, having big advantages in terms of water entrance distance and the time taken in the first 10 meters, being more applicable to relay swimming events, hence being more suitable for being used for relay swimming events; as proved in the experiment, after long time relay takeoff training, swimmers using the arm swinging style takeoff technique can significantly improve their relay takeoff time in relay swimming events. Key words: sports training;swimming;relay event;arm swinging style takeoff technique;platform griping style takeoff technique |