Vitamin K2 may influence neuromuscular signaling: RCT

A 12-week randomized controlled trial investigated the effects of vitamin K2 MK-7 supplementation on neuromuscular function in healthy adults, focusing on younger (18–40) and older (65+) age groups. While no impact was found on recovery outcomes such as muscle strength or soreness across the full cohort, older adults showed improved neuromuscular signaling, specifically a shorter electromechanical delay after supplementation. The study suggests vitamin K2 may influence neural-to-muscle communication in aging populations, though the underlying mechanisms remain unclear and further research, especially in the 40–65 age group, is needed.