π A new meta analysis compared one-sided exercises to two-sided exercises to see which is superior for muscle and strength gains.
β’ Two-sided exercises are also called bilateral and an example is the squat.
β’ One-sided exercises are also called unilateral and an example is the lunge or bulgarians split squat.
ποΈ For strength gains there were 9 studies comparing bilateral and unilateral training, and we saw the principle of specificity at work, and participants improved their strength the most in the type of movement they trained.
πͺ For muscle growth, there were, to my surprise, only two studies comparing muscle growth between bilateral and unilateral training, and they didn't show any difference.
Both types of exercises seem to work just fine. And you can really get the best of both worlds by doing one bilateral exercise, and one unilateral.
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Reference:
π Sports Medicine, December 2024, Comparison of Muscle Growth and Dynamic Strength Adaptations Induced by Unilateral and Bilateral Resistance Training: A Systematic Review and Meta-Analysis.