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The purpose of this study was to analyze the characteristics of physique arid physical fitness and to investigate the effects of athlete`s physique and ,physical fitness to athletic performance of sprinters, middle arid long distance runners, jumps and throwers group with 80 track and field athletes of Boy`s and Girl`s high school in P metropolitan city. In this study 7 factors in physique, 9 factors in physical fitness and 17 factors in athletic performance were measured and analyzed. The results of the, study were as follows ; 1. The characteristics of the physique factors In Boy`s high school jumpers groin was longer in length factors, and throwers group was bigger in Birth and bulk than other groups. Throwers group was the biggest and, middle and long distance runners group was the smallest in each factors in Girl`s high school. 2. The characteristics of the physical factors In Boy`s high School throwers group was higher in muscular strength, sprinters group in power, flexibility and balance, and middle and long distance runners group in balance, but They were the lowest in other factors. Throwers group was higher in muscular strength, jumpers group in power and balance than other group`s in Girl`s high school. 3. The relationship between physique factors and athletic performances In Boy`s high school sprinters , group was significantly related to lower limb length, thigh girth and calf girth, middle and long distance runners group to lows limb length, jumpers group to standing height, upper limb length and calf girth, and throwers group to standing height, boy weight and chest girth. Sprinters group was significantly related to calf girth, jumpers group to standing height, thigh girth and calf girth, and throwers group to standing height, upper limb length, body weight and chest girth in Girl`s high school. 4. The relationship between physical fitness factors and athletic performances In Boy`s high school sprinters group was significantly related to power and muscular endurance, middle and long distance runners group to muscular endurance and cardiorespiratory endurance, jumpers group to muscular strength, agility, power and balance, and throwers group to muscular strength, agility and power. Middle and long distance runners group was very significantly related to muscular strength and endurance, jumpers group to muscular strength, ability, power, flexibility and muscular endurance, and throwers group to muscular strength, agility and muscular endurance, but sprinters group only was not significantly related to all physical fitness factors in Girl`s high school.