To Develop Training Program for Improvement of Libero Volleyball Players of Rajasthan

Abstract

The libero position, introduced in volleyball in 1998, has become the cornerstone of defensive organization and serve reception efficiency, yet systematic, evidence-based, position-specific training programs for libero players remain scarce at regional levels in India, particularly in Rajasthan. The present study aimed to develop and evaluate the effectiveness of a 4-week libero-specific training program on biomotor abilities and position-specific technical skills in Rajasthan state-level and district-level libero volleyball players. A pre-test/post-test single-group experimental design was employed. Thirty male libero volleyball players (n = 30; mean age: 21.47 ± 2.13 years; mean height: 173.2 ± 5.4 cm; mean body mass: 68.5 ± 6.8 kg; mean playing experience: 4.8 ± 1.9 years) were purposively selected from Rajasthan. The libero-specific training program, grounded in periodization principles (Bompa & Haff, 2009) and the force-velocity spectrum concept (Haff & Nimphius, 2012), consisted of five sessions per week for four weeks, structured across Foundation, Development, and Peaking phases targeting reactive strength, explosive power, agility, forearm passing accuracy, and reactive digging efficacy. Pre-test and post-test data were analyzed using descriptive statistics and paired samples t-test (level of significance: α = 0.05), with Cohen's d for effect size. Results demonstrated statistically significant improvements across all five dependent variables: Countermovement Jump (+3.87 cm, 10.2%; t = 12.45, p < 0.001, d = 2.27), Reactive Strength Index (+0.27, 14.8%; t = 10.82, p < 0.001, d = 1.98), Pro-Agility Shuttle Time (−0.35 sec, 6.4%; t = −11.24, p < 0.001, d = 2.05), Forearm Passing Accuracy (+10.40%, 15.3%; t = 14.82, p < 0.001, d = 2.71), and Reactive Digging Efficacy (+11.47%, 18.2%; t = 13.56, p < 0.001, d = 2.48). All Cohen's d values exceeded 1.98, indicating very large practical effects. All five research hypotheses were accepted. The findings provide strong empirical evidence that a short-duration, position-specific libero training program produces substantial, practically meaningful improvements in both physical and technical performance domains, with important implications for coach education and libero development in Rajasthan.