What is it about?
This study investigated whether a single 90-minute strength training session (STS)—with no load, 10% bodyweight overload, or 20% bodyweight overload—impacts vertical jump performance in young female volleyball players (~14 years old). Testing included squat jumps (SJ), countermovement jumps with and without arm swing (CMJ, CMJ-AS), and perceived exertion (Borg scale). Despite different overloads, no significant changes were found in jump height or perceived exertion across the conditions
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Why is it important?
Vertical jump is a key indicator of lower-limb strength in volleyball, and STS is commonly used in training. The finding that acute overload (up to 20% bodyweight) doesn’t impair jump performance or increase fatigue suggests such sessions may be integrated without negatively affecting adolescent players’ immediate athletic ability. This helps coaches and trainers design conditioning sessions that balance strength stimulus and performance readiness.
Perspectives
Future research should: a) Include larger and more diverse samples (e.g., males, different age groups, competitive levels); b) Assess cumulative effects of repeated STS across a season; c) Explore other performance measures such as agility or endurance; d) Evaluate different overload levels and timing (e.g., rest intervals between training and performance tasks).
Manuel Gómez-López
University of Murcia
Read the Original
This page is a summary of: Acute effects of overload strength training on vertical jump performance in young female volleyball players, The Journal of Sports Medicine and Physical Fitness, July 2025, Edizioni Minerva Medica,
DOI: 10.23736/s0022-4707.25.16497-9.
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