Does combined strength training and local vibration improve isometric maximum force? A pilot study

Area of Science:

• Sports Science
• Exercise Physiology
• Biomechanical Research

Background:

• Investigating the efficacy of combined strength training (ST) and local vibration (LV) on muscle force.
• Comparing the effects of LV applied during exercise versus traditional ST on contralateral muscle force.
• Examining the potential of LV to enhance isometric maximum force in arm flexor muscles.

Purpose of the Study:

• To determine if combined ST and LV improves isometric maximum force of arm flexor muscles.
• To compare the effects of LV on one arm versus ST on the contralateral arm within the same subjects.
• To test the hypothesis that LV intervention yields greater isometric force gains than ST.

Main Methods:

• Twenty-seven college students participated, training three times weekly for four weeks.
• Training involved four sets of 12 repetitions at 70% of 1-repetition maximum (1 RM).
• The right arm underwent vibration training (VS), while the left arm received traditional strength training (TTS).

Main Results:

• Both arms showed significant increases in isometric maximum force.
• The vibration-trained side (VS) demonstrated a 43% increase in force.
• The traditionally trained side (TTS) showed a 22% increase in force.

Conclusions:

• Combined ST and LV interventions effectively improve isometric maximum force in arm flexor muscles.
• LV demonstrates superior effectiveness in enhancing muscle force compared to traditional ST.
• The findings support the use of LV as a potent method for strength development.