Loading and concurrent synchronous whole-body vibration interaction increases oxygen consumption during resistance...

Area of Science:

• Exercise Physiology
• Biomechanics
• Human Performance

Background:

• Low exercise compliance is a barrier to achieving health benefits, often linked to high exertion.
• Whole-body vibration (WBV) may increase caloric expenditure with reduced perceived effort.
• Limited data exists on WBV's impact on oxygen consumption (VO2) during resistance exercise.

Purpose of the Study:

• To investigate the combined effects of resistance training and WBV on oxygen consumption (VO2).
• To compare VO2 during squatting with varying loads and vibration intensities.

Main Methods:

• Ten men performed squat exercises at 0%, 20%, and 40% body weight (BW) under three conditions: no vibration (NV), 35Hz/2-3mm (35L), and 50Hz/5-7mm (50H).
• VO2 was measured during rest, exercise sets, and recovery.
• Repeated measures ANOVA was used to analyze the interaction between exercise stage, load, and vibration.

Main Results:

• During exercise, WBV (35L, 50H) at 20% BW significantly increased VO2 compared to NV.
• At 40% BW, higher loads increased VO2, but no significant differences were found between vibration conditions.
• Recovery VO2 was primarily influenced by load, with higher loads resulting in greater VO2.

Conclusions:

• Synergistic use of WBV with moderate loads (20% BW) elevates VO2 comparably to higher loads (40% BW) without WBV.
• WBV can enhance the metabolic demand of resistance exercise, potentially improving training efficiency.
• External load significantly impacts recovery VO2, irrespective of vibration.