Effects of electromyostimulation training and volleyball practice on jumping ability

Area of Science:

• Sports Science
• Exercise Physiology
• Neuromuscular Training

Background:

• Vertical jump performance is crucial for volleyball players.
• Electromyostimulation (EMS) is a training modality with potential to enhance muscle power.
• Limited research exists on the specific effects of EMS on volleyball-specific jumping ability.

Purpose of the Study:

• To investigate the impact of a 4-week electromyostimulation (EMS) program on vertical jump performance in volleyball players.
• To assess changes in single and consecutive jump metrics following EMS intervention.
• To explore the potential of EMS to improve neuromuscular properties relevant to jumping.

Main Methods:

• Twelve volleyball players participated in a 4-week training program.
• EMS was applied 3 times weekly, targeting knee extensors and plantar flexors for ~12 minutes per session.
• Squat jump (SJ) and counter movement jump (CMJ) performance were measured before and after the intervention.

Main Results:

• No significant changes in single SJ or CMJ height were observed immediately post-intervention.
• A significant ~4% increase in mean height and power during sustained consecutive CMJs was noted.
• Ten days after cessation of EMS, significant improvements in single SJ (+6.5%) and CMJ (+5.4%) height were recorded.

Conclusions:

• EMS training can enhance sustained vertical jumping power and, with a short delay, single jump performance in volleyball players.
• Integrating sport-specific activities post-EMS may optimize neuromuscular control for improved jumping ability.
• EMS shows promise as a supplementary training tool for athletes seeking to improve explosive power.