This study analyzed the relation between field test(field skills: bat speed, throw distance, base running) and anaerobic exercise ability and isokinetic muscle function related to the performance improvement in 22 female softball players in D metropolitan city. The data processing was conducted using SPSS 25.0 to produce the average and standard deviation of all measured items, and the correlation between field skills and anaerobic exercise ability and isokinetic muscle function was measured with the Pearson s correlation analysis. An analysis of the correlation between field tests and isokinetic muscle function showed a significant correlation in the left extensor and bat speed(p<.05) and in weight ratio left extensor and left extensor and throw distance(p<.01). The base running ability showed a significant inverse correlation between the right flexor and 1st base(p<.01), 2nd base(p<.01), and home(p<.05) and between the right flexor/extensor ratio and 1st base(p<.05) and 2nd base(p<.05). For anaerobic exercise ability and isokinetic muscle function, there was a significant correlation between right extensor and peak power(p<.05), average power(p<.05), and total energy(p<.05). Based on the results of this study, it is believed that the bat speed and throw distance of female softball players are related to the left extensor and the base running ability is related to the right flexor and right flexor/extensor ratio.
2. Research Method