Key result
Interval jumping improves squat jump ~118% more than interval running in male collegiate volleyball players.
Why the study?
This study compared inter-individual variability in the adaptive responses of cardiorespiratory fitness, anaerobic power, and motor abilities of male volleyball players to HIIT prescribed as repetitive drop jumps versus running-based intervals.
Does interval jumping compared to interval running improve cardiorespiratory fitness and anaerobic power with different inter-individual variability in male collegiate volleyball players?
Comparison
Interval running vs interval jumping
Design
Randomized trial
Follow-up
6-week training period
Authors
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Supports prioritizing interval jumping to enhance vertical jump in volleyball players; extends RCT evidence on modality-specific power adaptations.
RCT (n=24)
Computerized random number generator
No
Does interval jumping compared to interval running improve cardiorespiratory fitness and anaerobic power with different inter-individual variability in male collegiate volleyball players?
Absolute Event Rate: 7.4% vs 3.4%
p-value: p=0.001
Both interval running and interval jumping effectively improve cardiorespiratory fitness and anaerobic power in volleyball players, but interval running produces more uniform physiological adaptations while interval jumping yields greater improvements in vertical jump performance.
Zhao et al. (2024) conducted an RCT in Healthy collegiate volleyball players (n=24). Interval jumping (repetitive drop jumps) vs. Interval running was evaluated on Squat jump improvement (95% CI 2.51 - 5.42, p=0.001). Interval jumping demonstrated a significantly greater improvement in squat jump and countermovement jump compared to interval running in male collegiate volleyball players.
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