Study of Lower Limb Angular Kinematics and Height of the Center of Gravity in Volleyball Overhead Pass
1 Sumanta Kumar Mondal; 2 Bindusar Mondal; 3 Papan Mondal; 4 Nirmalendu GayenPurpose: The study aimed at measuring the hip, knee and ankle joint angles at the time of overhead pass in volleyball and to measure height of C.G. at different stages of the execution of the overhead pass. Method & Materials: 6 male volleyball Players who represented Visva-Bharati University in AIU (Association of Indian Universities) Tournament, were selected as subjects. The age range of the subject was 20-25 years. The variables of the study were hip, knee and ankle joint angles and height of CG at Contact, Release and Follow through points. A video camera having the capacity of 120 fps was employed to capture motion of overhead pass.CG location was identified by employing joint point method and height of CG was calculated by using reference scale. Statistical Analysis: Descriptive Statistics and ‘t’ test were employed to analyze the data. The level of significance was set at 0.05 level. Result: The Mean Difference was significant between the angles of Contact & Release and Release & Follow Through of left ankle joint and Release & Follow Through of right ankle joint. Mean Difference was also significant between the angles of Release & Follow Through of right knee joint. Significant Mean Difference was also observed between the angles of Release & Follow through of right hip joint. In CG height mean difference was only significant between the phases of Release and Follow Through. Extension of lower limb angles and consequently the increase in the CG height were resulted to generate and transfer power to the ball [Yu Ozawa et al. (2022)15& Maolin Dong et al. (2024)16]. Conclusion: Among the three lower limb angles ankle joint has greater angular displacement in ball contact and release action in volleyball overhead pass than other two joints and displacement of lower limb joints are more during release to generate force. Increase height of CG during release and follow through is the indication of lower limb extension.