Can, N.V. 2025. Application and Evaluation of the Effectiveness of Speed-Strength Development Exercises for Male Volleyball Athletes Aged 14–15 at the Hanoi Sports Training and Competition Center. International Journal of Humanities and Education Development (IJHED). 7, 6 (Dec. 2025), 137–145. DOI:https://doi.org/10.22161/jhed.7.6.15.