The effect of maximum physical exertion exercises according to the pulse index and its effect on the size of the cardiovascular and the achievement of a 1500-meter running under 20 years old

اثر تمرينات الجهد البدني القصوي وفقا لمؤشر النبض واثره على حجم عضلة القلب وإنجاز ركض 1500 متر تحت 20 سنة

الملخص

For every maximum  physical effort  for a sports competition that has its own adaptations to the functions of different body systems, the  activity of the 1500-meter running  has functional responses and adaptations that differ from other track and field activities. Based on the field academic  experience of the  researcher, the researcher  observed  that one of the reasons for the low achievement in the activity  of the 1500-meter running  in Iraq during  recent years, its deterioration  compared to  the Arab and continental levels, this  activity  needs physical preparation commensurate with their capabilities and abilities according to the activity and its requirements, and this prompted the researcher to search for the preparation of appropriate training requirements for this type of activity that needs physiological requirements and which gives physical preference according to the two pulse indicators (120 z / D) or (130 z / d). The research aims to identify and prepare the effect of maximum physical exertion exercises according to the pulse index and its effect on the size of the cardiovascular and the achievement of a 1500-meter running under 20 years old. The researcher adopted the experimental approach with equal groups. The research community determined that 1500 meters running  for youth and by (16) runners under the age of 20 years, and it applied Maximum physical exertion exercises according to the pulse index and its effect on the size of the cardiovascular on the experimental group for a period of eight weeks with three training units per week. The SPSS statistical package  was used to process the data and obtain the results, from which the researcher reached the most important conclusions, which is that the maximum physical exertion exercises according to the pulse index have a positive effect on the adaptation and normalization of the size of the cardiovascular  and on the achievement of the players, which indicates the effectiveness of the exercises during the period of special preparation of the experimental group.