Effect of Sand Training on Jumping Abilities of Junior Volleyball Players

摘要

The purpose of the study was to determine the effect of sand training on jumping abilities of junior volleyball players. For this purpose, thirty junior volleyball players enrolled in the S.A. I. training centre for volleyball at Rajnandgaon (CG) under the day boarding scheme, age ranging from 16 to 19 years, were selected as the subjects of the study. Subjects were divided randomly in two equal groups Group-A (n=15) and Group-B (n=15). Group-A went for a program selected for sand training for a period of 6 weeks and group 'B' was the control group. The subjects of the control group and experimental group had trained volleyball prior to the experimental program for a period of two and four years respectively. Measurement for various variables taken at the beginning (Pre-test)and at the end of experimental period after 6 weeks Post-test). The Mean, S.D. and t-test were computed by the investigator for the collected data. The difference of pre-test and post-test scores were taken into account. The level of significance was set at .05 level of confidence. The analysis of data revealed that the six-week sand training program has an effect on the statistically relevant increase in the explosive type strength of the leg muscles, which in turn leads to an increase in the vertical jump of a block, spike and the long jump. The technical and tactical training program to a lesser extent in comparison to the experimental group has an effect on the development of explosive type strength.