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Resistance Training Using VAriable Resistance Suit (VARS) Increased Isometric and Isokinetic Muscle Strength
Summary
A novel wearable resistance suit (VARS) effectively improved muscle strength in untrained adults over 8 weeks. This accessible device enhanced isokinetic and isometric force without altering muscle size or body composition.
Area of Science:
- Exercise Physiology
- Biomechanical Engineering
Background:
- Resistance training is crucial for muscle hypertrophy and strength.
- Equipment accessibility poses a significant barrier to traditional resistance training.
Purpose of the Study:
- To evaluate a wearable Variable Resistance Suit (VARS) as an accessible and portable alternative for improving muscle strength.
- To test the hypothesis that VARS can target specific muscles for strength gains through adjustable, speed-dependent resistance.
Main Methods:
- Twelve untrained healthy males underwent an 8-week resistance training program using VARS.
- VARS targeted the biceps brachii, triceps brachii, biceps femoris, and rectus femoris.
- Muscle strength was assessed via isokinetic and isometric dynamometry; muscle size and body composition were measured using ultrasound and bioelectrical impedance analysis.
Main Results:
- Significant improvements in muscle strength were observed: a 49.9±9.6% increase in isokinetic force and a 30.6±7.6% increase in isometric force.
- No significant changes were found in muscle size or body composition.
Conclusions:
- The wearable Variable Resistance Suit (VARS) is an effective and feasible tool for enhancing muscle strength.
- VARS offers a promising, accessible alternative to traditional resistance training, with potential applications in clinical settings.
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