This study showed a paradigm-shifting increase of 5.5% muscle mass in the thighs in only two weeks of flywheel squatting.
Historically gains in muscle mass has been thought to be a delayed response to chronic training. However, already in 2008 Norrbrand et al* showed robust and early gains in muscle mass with flywheel but this is now repeated and shown in the normal vertical squat.
On top of that, the gains in muscle mass were accompanied with a 30% increase in force and a 50% increase in concentric and eccentric power over four weeks.
You can read the full research piece HERE
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