{"references": ["1.\tAntonio, P., Quirico, F.,Giuseppe, T.M., Marco, N. and Antonino, B. (2013).Effects of high-intensity circuit training, low-intensity circuit training and Endurance training on blood pressure and lipoproteins in middle-aged overweight men, Journal of Strength and Conditioning Research; 1803-10. 2.\tAzarmehr, S. A., Esmaelzadeh Toloee, M., & Akbari, E. (2017). The effect of 8 weeks of Circuit Resistance Training on metabolic syndrome risk factors and body composition in women over age 50 with diabetes mellitus type 2. International Journal of Applied Exercise Physiology, 6(3), 103-110. 3.\tBilly Sperlich, Birgit Wallmann-Sperlich, Christoph Zinner, Valerie Von Stauffenberg, Helena Losert & Hans-Christer Holmberg (2017). Functional High-Intensity Circuit Training Improves Body Composition, Peak Oxygen Uptake, Strength, and Alters Certain Dimensions of Quality of Life in Overweight Women. Front Physiol, 8: 172. 4.\tFebin Jebaraj, A & Dr. C Robert Alexandar (2016). Effect of aerobic exercise and circuit training on obesity among school students. International Journal of Physical Education, Sports and Health. 3, 1. 5.\tFreitas, Tomas T.; Calleja-Gonzalez, Julio; Alarcon, Francisco; Alcaraz, Pedro E. (2015). Acute effects of two different resistance circuit training protocols on performance and perceived exertion in semi-professional basketball players. Journal of Strength & Conditioning Research: Post Acceptance: August 13, 2015."]}

The purpose of the study was to find out the effect of circuit training on agility among hockey players. To achieve the purpose 30 hockey players from Tamilnadu Physical Education and Sports University, Chennai were selected as subjects and their age ranged from 18 to 25 years. The study was formulated as a true random group design, consisting of a pre-test and post-test. The subjects were randomly assigned to two equal groups of fifteen each and named as Group ‘A’ and Group ‘B’. Group ‘A’ underwent circuit training and Group ‘B’ undergone no training. The circuit training group was undergone training for six weeks on alternate days. The endurance parameters namely cardiovascular endurance and strength endurance were selected as variables. Analysis of covariance was used, where the final means were adjusted for differences in the initial means, and the adjusted means were tested for significance. The experimental group hockey players showed significant improvement on agility when compared to the subjects in the control group.