Researchers presenting at the 2013 American College of Rheumatology (ACR) Meeting have found a positive relationship between vitamin D and muscle strength.
A Belgian research team conducted a meta-analysis, led by Charlotte Beaudart, MPH. They searched and found 214 randomized controlled trials between 1966 and February 2013 that looked at the effect of vitamin D on muscle strength. Of the total gathered, 19 studies met their inclusion criteria.
“All forms and doses of vitamin D supplementation, with or without calcium supplementation, compared with placebo or control were included,” Beaudart stated. “Muscle strength was assessed either by grip strength and/or lower limb muscle strength.”
In all, there were 4,824 participants in these 19 studies. The average age was 66 years old.
Thirteen studies observed effects of vitamin D supplementation on grip strength, while 15 observed effects of supplementation on lower limb muscle strength.
Results showed no significance between vitamin D supplements and grip strength, but did show significance in supplements increasing lower limb muscle strength.
Dantoni, T. Vitamin D Supplementation Increases Lower Limb Muscle Strength. Monthly Prescribing Reference, 2013.