Effects of High Intensity Interval Training and Low Intensity Interval Training on Selected Physical and Physiological Variables among College Level Women Volleyball Players

Abstract

The study examined the impact of a 12-week program involving HIIT and LIIT on newlinethe physical and physiological performance of female volleyball players. Sixty players aged newline18 25 from SRM Group of Institutions were randomly allocated into three groups: HIIT newline(n=20), LIIT (n=20), and a control group (n=20). The HIIT group participated in newlinehighintensity workouts aimed at enhancing speed, agility, endurance, explosive strength, and newlineflexibility. In contrast, the LIIT group followed a moderate-intensity training protocol, newlinefocusing on gradual improvements in the same fitness parameters. The control group newlinecontinued their standard volleyball practice without any additional intervention. newlineMeasurements were taken both before and after the intervention, and descriptive statistics newlinewere used to assess the results. Analysis of Covariance (ANCOVA) and post hoc tests were newlineused to evaluate group differences, with a level of significance of 0.05. The results indicated newlinethat the HIIT group achieved significant improvements in both physical (speed, agility, newlineendurance, strength, and flexibility) and physiological outcomes (resting heart rate, newlinebreathholding capacity, VO2 max, blood pressure, and lung capacity) compared to LIIT and newlinecontrol group newline