Vertical Jump Height (Vjh ) and Spike Speed (Ss) and Attack Effectiveness (Ae ) among Volleyball Athletes in a University in Jiangxi Province, China

Author(s)	Dr. yinming xie
Country	Philippines
Abstract	This study investigated the relationship between vertical jump height (VJH), spike speed (SS), and attack effectiveness (AE) among volleyball athletes at Pingxiang University in Jiangxi Province, China. A descriptive, comparative, and correlational research design was employed, utilizing a researcher-made questionnaire to collect self-assessment data from 147 volleyball athletes. The findings revealed that the athletes' overall self-assessment of their VJH and SS was moderate. Statistical analysis showed significant differences in self-assessment based on sex and years of playing experience, but no significant differences were found across age groups. Most importantly, a strong and significant positive relationship was identified between VJH and SS and AE.
Keywords	Vertical Jump Height (VJH),Spike Speed (SS),Attack Effectiveness (AE),Biomechanical Principles of Power Development
Published In	Volume 16, Issue 4, October-December 2025
Published On	2025-10-23
DOI	https://doi.org/10.71097/IJSAT.v16.i4.8966
Short DOI	https://doi.org/g97s6j

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